WO2012122745A1 - Sphère creuse résistante à une température élevée et son procédé de préparation - Google Patents

Sphère creuse résistante à une température élevée et son procédé de préparation Download PDF

Info

Publication number
WO2012122745A1
WO2012122745A1 PCT/CN2011/075096 CN2011075096W WO2012122745A1 WO 2012122745 A1 WO2012122745 A1 WO 2012122745A1 CN 2011075096 W CN2011075096 W CN 2011075096W WO 2012122745 A1 WO2012122745 A1 WO 2012122745A1
Authority
WO
WIPO (PCT)
Prior art keywords
hollow sphere
aluminum
mass percentage
magnesium
high temperature
Prior art date
Application number
PCT/CN2011/075096
Other languages
English (en)
Chinese (zh)
Inventor
王家邦
傅晓云
Original Assignee
浙江大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN 201110057983 external-priority patent/CN102180687A/zh
Priority claimed from CN201110057981XA external-priority patent/CN102180686A/zh
Priority claimed from CN 201110058060 external-priority patent/CN102180688A/zh
Priority claimed from CN 201110058086 external-priority patent/CN102180689A/zh
Application filed by 浙江大学 filed Critical 浙江大学
Publication of WO2012122745A1 publication Critical patent/WO2012122745A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/653—Processes involving a melting step
    • C04B35/657—Processes involving a melting step for manufacturing refractories
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • C04B2235/321—Dolomites, i.e. mixed calcium magnesium carbonates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C04B2235/3246—Stabilised zirconias, e.g. YSZ or cerium stabilised zirconia
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/405—Iron group metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/94—Products characterised by their shape

Definitions

  • the invention relates to a high temperature resistant hollow sphere and a preparation method thereof.
  • the ultra-high temperature kiln has the disadvantages of large heat capacity, low heating rate, high energy consumption, short service life and large medium-term maintenance. It saves energy and reduces energy consumption, and is a resource-saving society and human being. Continuous development of services.
  • the lightweight thermal insulation material obtains low thermal conductivity by introducing pores, the introduction of a large number of pores leads to an increase in the refrigerating line shrinkage rate of the lightweight material, a decrease in the load softening temperature, a high temperature creep, and a decrease in the compressive strength, thereby
  • the use temperature of hot materials is difficult to increase and the application range is limited. Therefore, it is always the focus of experts from various countries to find new methods to prepare new high-temperature insulation materials.
  • alumina insulation materials are the most diverse, the use temperature is high, and the heat insulation effect is good. It is the key insulation material developed today, and the application of lightweight alumina hollow sphere ceramics is thermal insulation material technology.
  • a sign of progress which overcomes the shortcomings of low strength and high temperature creep resistance of the original foamed alumina products. It can be directly contacted with flames or used as a high-temperature lining structural material, which can promote the structural transformation of traditional high-temperature kiln furnaces.
  • Alumina hollow sphere is a kind of high-temperature heat-insulating material with excellent performance. It is made by smelting and blowing in high-purity alumina in electric furnace. It can be made into various shapes by using alumina hollow sphere as the main body.
  • the product has high mechanical strength, which is several times that of a general lightweight product, and the bulk density can reach half or even lower than that of corundum products.
  • the zirconia hollow sphere can also be prepared by the same method, and the use temperature can reach above 2100 ° C.
  • the zirconia raw material is expensive, it is difficult to be widely applied in industrial production.
  • alumina hollow spheres are also difficult to obtain large-scale applications due to cost performance, and the proportion is small relative to the total amount of refractory materials.
  • the composition is relatively simple.
  • the performance in terms of erosion resistance and thermal shock resistance needs to be improved, and the scope of use is also limited.
  • the structural/insulation integrated composite brick is composed of two heavy working layers/light insulation layers. Different working layers require different components of fused hollow spheres to match, otherwise interface reaction is easy to occur and affect product performance. .
  • fused hollow spheres In addition, based on the castables of low-cost fused hollow spheres, different environmental conditions have been proposed for different component conditions. Some require fused hollow spheres to have better thermal shock resistance, and some require better The wear resistance and erosion resistance are strong, and some require low cost. These require different components and different cost raw materials to specifically meet these requirements, and the patented product is required to meet the requirements.
  • the invention aims to provide a high temperature resistant hollow sphere and a preparation method thereof, and the technical principle is based on various calcium-containing substances or aluminum-containing substances or magnesium-containing substances or chromium-containing substances or zirconium-containing substances or titanium-containing substances as main raw materials.
  • additives are added as needed to adjust the melt composition and viscosity, and the high temperature resistant hollow spheres are prepared by blowing the melt, so that they have different functional characteristics.
  • a high temperature resistant hollow sphere characterized in that the high temperature resistant hollow sphere contains any one or more of Al 2 O 3 , CaO, MgO, Cr 2 O 3 , ZrO 2 or TiO 2 .
  • the high temperature resistant hollow sphere containing any one of CaO, MgO, Cr 2 O 3 or TiO 2 , or containing Al 2 O 3 , CaO , MgO , Cr 2 O 3 , ZrO 2 or any combination of two or more of TiO 2 .
  • the high temperature resistant hollow sphere and the high temperature resistant hollow sphere can be classified into at least the following types: In the following categories, the percentages are all by mass, 1) aluminum-calcium hollow spheres, wherein Al 2 O 3 is 0.1 to 99.9%. CaO is 0.1 to 99.9%; 2) magnesium aluminum calcium hollow spheres, wherein CaO is 0.01 to 99.9%, Al 2 O 3 is 0.01 to 99.9%, MgO is 0.01 to 99.9%; 3) aluminum titanium hollow spheres, among which Al 2 O 3 is 40-99.9%, TiO 2 is 0.1-60%; 4) Magnesium-calcium hollow spheres, wherein CaO is 0.1-99.9%, MgO is 0.1-99.9%; 5) Magnesium-aluminum hollow spheres, among which Al 2 O 3 0.1 to 99.9%, MgO 0.1 to 99.9%; 6) magnesium chrome hollow spheres, wherein MgO is between 70 ⁇ 99.9%, Cr 2 O 3 is 0.1 to 30%
  • the high temperature resistant hollow sphere is characterized in that: the high temperature resistant hollow sphere contains Al 2 O 3 , CaO , MgO , Cr 2 O 3 , ZrO 2 and TiO 2 , wherein the mass of Al 2 O 3 is 100
  • the content of the fraction is 0.01 ⁇ 99.9%
  • the content of CaO is 0.01-99.9%
  • the mass percentage of MgO is 0.01 ⁇ 99.9%
  • the mass percentage of Cr 2 O 3 is 0.01 ⁇ 30%
  • the mass percentage of ZrO 2 It is 0.01 ⁇ 10%
  • the content of TiO 2 is 0.01 ⁇ 60%.
  • the aluminum-containing substance is any combination of one or more of industrial alumina, aluminum hydroxide, high alumina bauxite or aluminum slag.
  • the calcium-containing substance is any combination of one or more of quicklime, slaked lime, limestone, dolomite or calcite.
  • the magnesium-containing substance is any combination of one or more of light burned magnesia powder, magnesia, dolomite or magnesite.
  • the chromium-containing substance is chrome ore or chrome oxide powder.
  • the zirconium-containing material is zircon or monoclinic zirconia.
  • the titanium-containing material is titanium oxide powder or high titanium residue.
  • the additive is a carbon material, and the amount of the silicon-removing material is 1.2 to 4 times the number of moles of SiO2 in the batch.
  • the additive is a mixture of a carbon material and a substance containing iron.
  • the amount of the carbon material is 0.8 to 3 times the number of moles of SiO2 in the batch, and the molar content of iron in the iron-containing material is 2 to the mole of SiO2 in the batch. 5 times.
  • the carbon material is any combination of one or more of graphite, petroleum coke, calcined coke, coal, coke, pitch or charcoal.
  • the iron-containing component substance is any combination of one or more of iron filings, iron ore, iron red, iron oxide black, scrap iron or scrap steel.
  • the prepared high temperature resistant hollow sphere has the characteristics of high compressive strength or strong anti-erosion ability or good wear resistance or good thermal shock resistance
  • the hollow component of the composite component has a low melting temperature and can be greatly reduced.
  • the electric energy consumption in the smelting process greatly reduces the production cost, meets the requirements of the medium and low temperature kiln, and has good thermal insulation performance and high compressive strength, and is particularly suitable for use as an aggregate in heat insulating materials and lightweight castables. Meet the thermal insulation requirements of medium and low temperature conditions.
  • Example 1 Zirconium corundum hollow sphere and preparation method thereof
  • the proportion of raw materials is 95% of industrial alumina and 5% of monoclinic zirconia. Petroleum coke, calcined coke and iron scrap are used as additives. The amount of petroleum coke and calcined coke is guaranteed to be C molar amount.
  • the amount of iron filings ensures that the molar amount of Fe is twice the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace, Adjust the current and voltage at 2800 ° C to melt and refine for 10 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain a 0.2 to 5 mm zirconium corundum high temperature resistant hollow sphere.
  • the mass percentage of Al 2 O 3 in the high-temperature hollow ball of zirconium corundum is 90.2%, and the mass percentage of ZrO 2 is 4.8%.
  • the product can be used as high-strength lightweight castable and lightweight brick aggregate.
  • Example 2 Zirconium corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is 0.01% of industrial alumina and 7% of zircon.
  • the use of graphite as an additive ensures that the molar amount of C in the graphite is 4 moles of SiO 2 in the furnish.
  • the product After mixing the raw materials, they are mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace, the current and voltage are adjusted and smelted at 2200 ° C for 40 minutes; the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5mm zirconium corundum high temperature resistant hollow sphere.
  • the mass percentage of Al 2 O 3 in the high-temperature hollow ball of zirconium corundum is 90.4%, and the mass percentage of ZrO 2 is 4.6%.
  • the product can be used as high-strength lightweight castable and lightweight brick aggregate.
  • Example 3 Zirconium corundum hollow sphere and preparation method thereof
  • the raw material ratio is in mass percent, including aluminum slag 94%, zircon 3% and monoclinic zirconia 1%. Using coke, charcoal and iron ore as additives, the amount of coke and charcoal is guaranteed
  • the molar amount of C is 3 times of the molar amount of SiO 2 in the furnish.
  • the amount of iron ore is ensured that the molar amount of Fe is twice the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.6 hours; In the DC arc furnace, the current and voltage are adjusted to melt at 2200 ° C for melting, and refining for 80 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain a zirconium corundum high temperature resistant hollow sphere of 0.2 to 5 mm.
  • the mass percentage of Al 2 O 3 in the high-temperature hollow ball of zirconium corundum is 92.5%, and the mass percentage of ZrO 2 is 2.5%.
  • the product can be used as high-strength lightweight castable and lightweight brick aggregate.
  • Example 4 Zirconium corundum hollow sphere and preparation method thereof
  • the raw material ratio is in mass percent, including 45% industrial alumina, 50% high alumina bauxite, 3% zircon and 2% monoclinic zirconia.
  • Graphite, petroleum coke, scrap iron, iron and iron red are used.
  • the amount of additive, graphite and petroleum coke is ensured that the molar amount of C is 0.8 times of the molar amount of SiO 2 in the furnish.
  • the amount of scrap iron, iron and iron red is ensured that the molar amount of Fe is 5 times the molar amount of SiO 2 in the furnish; After mixing, mix in the ball mill for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage to melt at 2300 °C to melt, and refine for 20 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain 0.2 ⁇ 5mm
  • the chrome corundum is resistant to high temperature hollow spheres.
  • the mass percentage of Al 2 O 3 in the high temperature hollow sphere of zirconium corundum is 90.9%, and the mass percentage of ZrO 2 is 4.1%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 5 Zirconium corundum hollow sphere and preparation method thereof
  • the proportion of raw materials is 90%, aluminum hydroxide 96%, zircon 2.5%, high purity monoclinic zirconia 1.5%, using calcined coke, iron oxide black and scrap as additives, the amount of calcined coke is guaranteed.
  • the molar amount of C is twice the molar amount of SiO 2 in the furnish, and the amount of iron oxide black and scrap steel ensures that the molar amount of Fe is 3.5 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.6 hours; The material is put into a DC arc furnace, the current and voltage are adjusted to melt at 2500 °C, and refined for 30 minutes.
  • the furnace is sprayed; the ball is sieved to obtain a zirconia corundum high temperature hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the high temperature hollow sphere of zirconium corundum is 90.4%, and the mass percentage of ZrO 2 is 4.6%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 6 Zirconium corundum hollow sphere and preparation method thereof
  • the raw material ratio is 0.01% by mass and zircon 5.5%.
  • the asphalt, coal and iron scrap are used as additives.
  • the amount of asphalt and coal is used to ensure the molar amount of SiO 2 in the batch. 0.8 times, the amount of iron filings ensures that the molar amount of Fe is 5 times the molar amount of SiO 2 in the batch; after mixing the raw materials, it is mixed in a ball mill for 1.9 hours; the batch is put into a DC arc furnace to adjust the current and voltage at 2800 °C. Smelting to melting, refining for 10 minutes; smelting is finished, and the furnace is sprayed; the ball is sieved to obtain a zirconia corundum high temperature resistant hollow sphere of 0.2 to 5 mm. The content of Al 2 O 3 in the zirconium corundum high temperature resistant hollow sphere is 90.9%, and the mass percentage of ZrO 2 is 4.1%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 7 Zirconium corundum hollow sphere and preparation method thereof
  • the raw material ratio is in mass percent, among which high-purity aluminum hydroxide [Al ( OH ) 3 mass percentage is greater than 99.99%] 99.93% and high-purity monoclinic zirconia [ZrO 2 mass percentage is greater than 99.99%] 0.07 %; mix the raw materials and mix in the ball mill for 1.9 hours; put the batch into the DC arc furnace, adjust the current and voltage to 2100 °C to melt, refine for 10 minutes; smelting is finished, the furnace is blown; the ball is sieved A zirconium corundum high temperature resistant hollow sphere of 0.2 to 5 mm is obtained.
  • the mass percentage of Al 2 O 3 in the high-temperature hollow ball of zirconium corundum is 99.9%, and the mass percentage of ZrO 2 is 0.1%.
  • the product can be used as high-strength lightweight castable and lightweight brick aggregate.
  • Example 8 Zirconium corundum hollow sphere and preparation method thereof
  • the raw material ratio is in mass percentage, wherein the high-purity aluminum hydroxide [Al ( OH ) 3 mass percentage is greater than 99.99%] 93.23% and high-purity monoclinic zirconia [ZrO 2 mass percentage is greater than 99.99%] 6.77 %; mix the raw materials and mix in the ball mill for 1.9 hours; put the batch into the DC arc furnace, adjust the current and voltage to 2100 °C to melt, refine for 10 minutes; smelting is finished, the furnace is blown; the ball is sieved A zirconium corundum high temperature resistant hollow sphere of 0.2 to 5 mm is obtained.
  • the mass percentage of Al 2 O 3 in the high-temperature hollow ball of zirconium corundum is 90.0%, and the mass percentage of ZrO 2 is 10.0%.
  • the product can be used as high-strength lightweight castable and lightweight brick aggregate.
  • Example 9 chrome corundum hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% by mass, 25% of chrome ore, 25% of chrome ore, and graphite is used as an additive.
  • the amount of graphite is used to ensure that the molar amount of C in the graphite is 4 times the molar amount of SiO 2 in the furnish; After mixing in a ball mill for 1 hour; put the batch into a three-phase electric arc furnace, adjust the current and voltage at 2800 °C for smelting, refining for 40 minutes; smelting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5mm chrome corundum High temperature resistant hollow ball.
  • the content of Al 2 O 3 in chrome corundum high temperature resistant hollow sphere is 77.5.%, and the mass percentage of Cr 2 O 3 is 17.5%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 10 chrome corundum hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% chromium sulphate, 10% chromium oxide and 80% aluminum slag.
  • Coke, charcoal and iron ore are used as additives.
  • the amount of coke and charcoal is guaranteed to be C molar amount of SiO 2 in the furnish.
  • the amount of iron ore is guaranteed to be 2 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into the DC arc furnace to adjust the current and The voltage is smelted to melt at 3100 °C, and refined for 10 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain a chrome corundum high temperature resistant hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the chrome corundum high temperature resistant hollow sphere is 80.9%, and the mass percentage of Cr 2 O 3 is 14.1%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 11 Chrome corundum hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% by mass, 30% of high alumina bauxite, 10% of chrome ore, and 10% of chrome oxide powder.
  • Graphite, petroleum coke, scrap iron, iron and iron red are used as additives.
  • the amount of graphite and petroleum coke is guaranteed to be 0.8 times the molar amount of SiO 2 in the furnish.
  • the amount of scrap iron, iron and iron red is ensured that the molar amount of Fe is 5 times the molar amount of SiO 2 in the furnish; After mixing in a ball mill for 1.8 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2900 °C to melt, and refined for 20 minutes; after the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2 to 5 mm of chromium. Corundum high temperature resistant hollow ball. The content of Al 2 O 3 in the chrome corundum high temperature resistant hollow sphere is 77.8%, and the mass percentage of Cr 2 O 3 is 17.2%. The product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 12 chrome corundum hollow sphere and preparation method thereof
  • the raw material ratio is 80% by mass, 15% of chrome ore, 5% of chromium oxide powder, and calcined coke, iron oxide black and scrap are used as additives.
  • the amount of calcined coke is guaranteed to be C molar amount. 2 times the molar amount of SiO 2 in the furnish, the amount of iron oxide black and scrap steel is ensured that the molar amount of Fe is 3.5 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into DC arc In the furnace, the current and voltage are adjusted to 2700 °C to melt and refining for 80 minutes.
  • the furnace is sprayed; the ball is sieved to obtain a chrome corundum high temperature hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the chrome corundum high temperature hollow sphere is 73.6%, and the mass percentage of Cr 2 O 3 is 21.4%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 13 chrome corundum hollow sphere and preparation method thereof
  • the proportion of raw materials is 0.01% of high alumina bauxite and 6% of chrome ore.
  • bitumen, coal and iron scrap is used as an additive.
  • the amount of bitumen and coal is guaranteed to be 0.8 mole of SiO 2 in the batch. Times, the amount of iron filings ensures that the molar amount of Fe is 5 times the molar amount of SiO 2 in the batch; after mixing the raw materials, it is mixed in a ball mill for 1.9 hours; the batch is put into a DC arc furnace, and the current and voltage are adjusted at 3000 °C.
  • the chrome corundum high temperature resistant hollow sphere has an Al 2 O 3 mass percentage of 90.5% and a Cr 2 O 3 mass percentage of 4.5%.
  • the product can be used as a high-strength lightweight castable and a lightweight brick aggregate.
  • Example 14 chrome corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is 8 percentage percent of aluminum hydroxide and 12.24% of high-purity chromium oxide.
  • the raw materials are mixed and mixed in a ball mill for 1.9 hours.
  • the batch is put into a DC arc furnace to adjust the current and voltage at 3000. °C smelting to melt, refining for 50 minutes; smelting is finished, and the furnace is sprayed; the ball is sieved to obtain a 0.2 to 5 mm chrome corundum high temperature resistant hollow sphere.
  • the content of Al 2 O 3 in the chrome corundum high temperature resistant hollow sphere is 78.3%, and the mass percentage of Cr 2 O 3 is 16.7%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 15 chrome corundum hollow sphere and preparation method thereof
  • the raw material ratio is in mass percentage, wherein high-purity aluminum hydroxide [% by mass of Al(OH) 3 is more than 99.99%] 78.11% and high-purity chromium oxide [mass percentage of Cr 2 O 3 is more than 99.99%] 21.89 %; mix the raw materials and mix in the ball mill for 1.9 hours; put the batch into the DC arc furnace, adjust the current and voltage to smelt at 3000 °C to melt, refining for 50 minutes; smelting is finished, the furnace is blown; the ball is sieved A chrome corundum high temperature resistant hollow sphere of 0.2 to 5 mm is obtained.
  • the chrome corundum high temperature resistant hollow sphere has a mass percentage of Al 2 O 3 of 70% and a mass percentage of Cr 2 O 3 of 30.0%.
  • the product can be used as a high-strength lightweight castable and a lightweight brick aggregate.
  • Example 16 Chrome corundum hollow sphere and preparation method thereof
  • the proportion of raw materials is in mass percent, among which high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 99.93%, high-purity chromium oxide [mass percentage of Cr 2 O 3 is more than 99.99%] 0.07 %; mix the raw materials and mix in the ball mill for 1.9 hours; put the batch into the DC arc furnace, adjust the current and voltage to smelt at 3000 °C to melt, refining for 50 minutes; smelting is finished, the furnace is blown; the ball is sieved A chrome corundum high temperature resistant hollow sphere of 0.2 to 5 mm is obtained. The content of Al 2 O 3 in the chrome corundum high temperature resistant hollow sphere is 99.9%, and the mass percentage of Cr 2 O 3 is 0.1%.
  • the product can be used as high strength lightweight castable and lightweight brick aggregate.
  • Example 17 Aluminum titanium hollow sphere and preparation method thereof
  • the raw materials are 95% aluminum slag, 3% high titanium slag and 2% titanium dioxide powder.
  • the coke, charcoal and iron ore are used as additives.
  • the amount of coke and charcoal is guaranteed to be C molar amount of SiO 2 in the furnish.
  • the amount of iron ore is guaranteed to be 2 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into the DC arc furnace to adjust the current and The voltage is smelted to 1400 ° C to melt, refining for 30 minutes; the smelting is finished, the furnace is blown; the ball is sieved to obtain an aluminum-titanium high temperature resistant hollow sphere of 0.2 to 5 mm.
  • the mass percentage of Al 2 O 3 in the aluminum-titanium high temperature resistant hollow sphere is 91.2%, and the mass percentage of TiO 2 is 3.8%.
  • the product can be used as high-strength lightweight castable and lightweight insulating brick aggregate.
  • Example 18 Aluminum titanium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 42% for industrial alumina, 55% for high alumina bauxite, 1% for high titanium slag, and 2% for titanium dioxide powder.
  • Calcined coke, coal, scrap iron, iron and iron red are used as additives.
  • the amount of calcined coke and coal is guaranteed to be 0.8 times the molar amount of SiO 2 in the furnish.
  • the amount of scrap iron, iron and iron red is ensured that the molar amount of Fe is 5 times the molar amount of SiO 2 in the furnish; After mixing, it is mixed in a ball mill for 1.8 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2300 °C to melt, and refined for 10 minutes; after the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5 mm.
  • Aluminum titanium high temperature resistant hollow ball The mass percentage of Al 2 O 3 in the aluminum-titanium high temperature resistant hollow sphere is 92.0%, and the mass percentage of TiO 2 is 3.0%.
  • the product can be used as high-strength lightweight castable and lightweight heat-insulating brick aggregate.
  • Example 19 Aluminum titanium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 96% industrial alumina, 2.5% high titanium slag, 1.5% titanium dioxide powder, graphite, petroleum, calcined coke, iron oxide black and scrap steel as additives, graphite, petroleum, calcined
  • the amount of coke is guaranteed to be 2 times the molar amount of SiO 2 in the furnish, and the amount of iron oxide black and scrap steel is ensured that the molar amount of Fe is 3.5 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill.
  • the mixture is put into the DC arc furnace, the current and voltage are adjusted to melt at 2500 °C, and refined for 10 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain an aluminum-titanium high temperature resistant hollow sphere of 0.2 ⁇ 5 mm.
  • the mass percentage of Al 2 O 3 in the aluminum-titanium high temperature resistant hollow sphere is 91.4%, and the mass percentage of TiO 2 is 3.6%.
  • the product can be used as high-strength lightweight castable and lightweight insulating brick aggregate.
  • Example 20 Aluminum titanium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 97% for high alumina bauxite and 3% for titanium dioxide powder.
  • Asphalt, coal and iron scrap are used as additives.
  • the amount of asphalt and coal is guaranteed to be 3 times the molar amount of SiO 2 in the batch.
  • the amount of iron filings is guaranteed to be 3 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.9 hours; the batch is put into a DC arc furnace, and the current and voltage are adjusted to be smelted at 2200 °C.
  • Example 21 Aluminum titanium hollow sphere and preparation method thereof
  • the proportion of raw materials is 91% of industrial alumina and 9% of titanium dioxide powder.
  • Graphite is used as additive.
  • the amount of graphite is guaranteed to be 1.2 times of the molar amount of SiO 2 in the batch.
  • the ball mill is used. Mixing for 1.8 hours; putting the batch into the DC arc furnace, adjusting the current and voltage to 2100 °C to melt, refining for 20 minutes; melting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5mm aluminum titanium high temperature hollow ball.
  • the mass percentage of Al 2 O 3 in aluminum-titanium high temperature resistant hollow sphere is 88.2%, and the mass percentage of TiO 2 is 10%.
  • the product can be used as high strength lightweight castable and lightweight insulating brick aggregate.
  • Example 22 Aluminum titanium hollow sphere and preparation method thereof
  • the ratio of raw materials is 57% of industrial alumina and 43% of titanium dioxide powder.
  • Asphalt is used as additive.
  • the amount of asphalt is guaranteed to be 4 times of the molar amount of SiO 2 in the batch.
  • the ball mill is used. Mixing for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage to 2150 °C to melt, refining for 20 minutes; smelting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5mm aluminum titanium high temperature hollow ball.
  • the content of Al 2 O 3 in the aluminum-titanium high temperature resistant hollow sphere is 56%, and the mass percentage of TiO 2 is 44%.
  • the product can be used as high-strength lightweight castable and lightweight insulating brick aggregate.
  • Example 23 Aluminum titanium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 99.93%, high-purity titanium dioxide powder [mass percentage of TiO 2 is greater than 99.99%] 0.07%; After the raw materials are mixed, they are mixed in a ball mill for 1.8 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2200 °C, and refined for 20 minutes; after the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5mm aluminum titanium high temperature resistant hollow ball.
  • the mass percentage of Al 2 O 3 in the aluminum-titanium high temperature resistant hollow sphere is 99.9%, and the mass percentage of TiO 2 is 0.1%.
  • the product can be used as high-strength lightweight castable and lightweight heat-insulating brick aggregate.
  • Example 24 Aluminum titanium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is high purity aluminum hydroxide [mass percentage of Al(OH) 3 is greater than 99.99%] 50.48%, high purity titanium dioxide powder [mass percentage of TiO 2 is greater than 99.99%] 49.52%; After mixing the raw materials, mix them in a ball mill for 1.9 hours; put the batch into the DC arc furnace, adjust the current and voltage to 2150 °C to melt and refine for 80 minutes; after the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5mm aluminum titanium high temperature resistant hollow ball.
  • the aluminum titanium high temperature resistant hollow sphere has a mass percentage of Al 2 O 3 of 40% and a mass percentage of TiO 2 of 60.0%.
  • the product can be used as a high-strength lightweight castable and a lightweight insulating brick aggregate.
  • Example 25 Magnesium-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is 100% magnesia and 68% slaked lime.
  • Asphalt and iron red and iron oxide black are used as additives.
  • the amount of asphalt is guaranteed to be 2 times the molar amount of SiO 2 in the furnish.
  • the amount of red and iron oxide black is ensured that the molar amount of Fe is 3 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a three-phase electric arc furnace, and the current and voltage are adjusted at 2,500.
  • the product can be used as a fast slag-forming agent or as a high-strength lightweight castable aggregate.
  • Example 26 Magnesium-calcium hollow sphere and preparation method thereof
  • the proportion of raw materials is 10%, magnesia powder 10%, dolomite 50% and slaked lime 30%.
  • Charcoal, petroleum coke, coal, iron filings and iron ore are used as additives, charcoal,
  • the amount of petroleum coke and coal is guaranteed to be 3 times the molar amount of SiO 2 in the furnish.
  • the amount of iron red and iron oxide black ensures that the molar amount of Fe is twice the molar amount of SiO 2 in the furnish; Mixing in a ball mill for 1.8 hours; putting the batch into a three-phase electric arc furnace, adjusting the current and voltage to smelt at 2600 °C to melt, refining for 80 minutes; smelting is finished, the furnace is blown; the ball is sieved to obtain 0.2 to 5 mm of magnesium and calcium.
  • High temperature resistant hollow ball The mass percentage of CaO in the magnesium-calcium high-temperature hollow sphere is 34.5%, and the mass percentage of MgO is 60.5%.
  • the product can be used as a fast slag-forming agent or as a high-strength lightweight castable aggregate.
  • Example 27 Magnesium-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is 100% magnesite and 99% calcite.
  • the calcined coke, graphite, scrap steel and iron oxide black are used as additives.
  • the amount of calcined coke and graphite is guaranteed to be C molar amount of SiO in the furnish. 0.8 times of 2 molar amount, the amount of scrap steel and iron oxide black is ensured that the molar amount of Fe is 5 times of the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.4 hours; the batch is put into the three-phase electric arc furnace.
  • the product can be used as a fast slag-forming agent or as a high-strength lightweight castable aggregate.
  • Example 28 Magnesium-calcium hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% of magnesia and 20% of dolomite.
  • Asphalt and petroleum coke are used as additives.
  • the amount of asphalt and petroleum coke is used to ensure that the molar amount of C is 4 times of the molar amount of SiO 2 in the furnish;
  • the mass percentage of CaO in the magnesium-calcium high temperature resistant hollow sphere is 3.2%, and the mass percentage of MgO is 91.8%.
  • the product can be used as a fast slag-forming agent or as a high-strength lightweight castable aggregate.
  • Example 29 Magnesium-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is 100% by mass, 10% of magnesia powder, 10% of magnesite, 10% of magnesite, 10% of quicklime, 10% of slaked lime, 10% of limestone, 10% of dolomite, 10% of calcite.
  • asphalt and petroleum coke as additives, the amount of asphalt and petroleum coke is ensured that the molar amount of C is 1.2 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a three-phase electric arc furnace.
  • the product can be used as a fast slag-forming agent or as a high-strength lightweight castable aggregate.
  • Example 30 Magnesium-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is 20% by mass, 10% of magnesia powder, 5% of magnesite, 25% of magnesite, 5% of quicklime, 5% of limestone, 25% of dolomite, 5% of dolomite and 5% of calcite.
  • asphalt and petroleum coke as additives, the amount of asphalt and petroleum coke is guaranteed to be 4 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into the three-phase electric arc furnace.
  • the product can be used as a fast slag-forming agent or as a high-strength lightweight castable aggregate.
  • Example 31 Magnesium-calcium hollow sphere and preparation method thereof
  • the raw material ratio is in mass percentage, among which high-purity quicklime (mass percentage of CaO is more than 99.99%) 99.9% And high-purity magnesia (MgO mass percentage greater than 99.99%) 0.1%; mix the raw materials and mix in a ball mill for 1.6 hours; put the batch into a three-phase electric arc furnace, adjust the current and voltage Melt at 3000 °C to melt, refining for 45 minutes; smelting is finished, and the furnace is sprayed; the ball is sieved to obtain a magnesium-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass percentage of CaO in the magnesium-calcium high temperature resistant hollow sphere is 99.9%, the mass percentage of MgO is 0.1%, the product can be used as a fast slag-forming agent, or as a high-strength lightweight castable aggregate.
  • Example 32 Magnesium-calcium hollow sphere and preparation method thereof
  • the raw material ratio is in mass percentage, among which high-purity quicklime (mass percentage of CaO is more than 99.99%) 0.1% And high-purity magnesia (MgO mass percentage greater than 99.99%) 99.9%; mix the raw materials and mix in the ball mill 1.6 Hours; put the batch into a three-phase electric arc furnace, adjust the current and voltage to smelt at 3000 °C to melt, refining for 45 minutes; smelting is finished, the furnace is blown; the ball is sieved to obtain 0.2 ⁇ 5mm Magnesium-calcium high temperature resistant hollow spheres. The mass percentage of CaO in the magnesium-calcium high temperature resistant hollow sphere is 0.1%, and the mass percentage of MgO is 99.9%.
  • the product can be used as a fast slag-forming agent or as a high-strength lightweight castable aggregate.
  • Example 33 Magnesium-chromium hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% by mass, of which light burnt magnesia powder is 68.0%, magnesia is 13.0% and chrome oxide is 19.0%.
  • Petroleum coke is used as additive.
  • the amount of petroleum coke is used to ensure the molar amount of C in petroleum coke is SiO 2 in the furnish. 4 times the molar amount; mix the raw materials and mix in the ball mill for 2 hours; put the batch into the DC arc furnace, adjust the current and voltage at 3200 °C for smelting, refining for 40 minutes; smelting is finished, the furnace is blown; Screening gives 0.2 to 5 mm magnesia-chromium hollow spheres.
  • the mass percentage of MgO in the magnesia-chromium hollow sphere is 80.9%, and the mass percentage of Cr 2 O 3 is 14.1%.
  • the product can be used as a high-strength lightweight castable and a lightweight insulating brick aggregate.
  • Example 34 Magnesium-chromium hollow sphere and preparation method thereof
  • the proportion of raw materials is 100%, light burned magnesia powder 60%, magnesite 20% and chrome ore 20%.
  • Coal, graphite, asphalt, iron ore and iron red are used as additives, coal, graphite and asphalt.
  • the dosage ensures that the molar amount of C in the petroleum coke is 0.8 times of the molar amount of SiO 2 in the furnish.
  • the amount of iron ore and iron red ensures that the molar amount of Fe is 5 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in the ball mill.
  • Example 35 Magnesium-chromium hollow sphere and preparation method thereof
  • the proportion of raw materials is 0.01% of magnesia, 0.8% of chrome oxide and 1.2% of chrome ore. After mixing the raw materials, it is mixed in a ball mill for 1.6 hours. The batch is put into the DC arc furnace to adjust the current and voltage. Melting at 2900 °C, refining for 50 minutes; smelting is finished, the furnace is blown; the ball is sieved to obtain a 0.2 to 5 mm magnesia-chromium hollow sphere. The content of MgO in the magnesia-chromium hollow sphere is 93.5%, and the mass percentage of Cr 2 O 3 is 1.5%. The product can be used as a high-strength lightweight castable and a lightweight brick aggregate.
  • Example 36 Magnesium-chromium hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% magnesia, 20% magnesite and 20% chromium oxide. Charcoal, graphite, iron ore and scrap are used as additives. The amount of charcoal and graphite is used to ensure the molar amount of C in petroleum coke.
  • the amount of iron ore and scrap steel is ensured that the molar amount of Fe is 3.4 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.4 hours; the batch is put into DC arc In the furnace, adjust the current and voltage at 3000 °C for smelting and refining for 30 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain a 0.2 to 5 mm magnesia-chromium hollow sphere.
  • the mass percentage of MgO in the magnesia-chromium hollow sphere is 73.7%, and the mass percentage of Cr 2 O 3 is 21.3%.
  • the product can be used as high-strength lightweight castable and lightweight brick aggregate.
  • Example 37 Magnesium-chromium hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% by mass, 10% of magnesite, 30% of magnesite and 20% of chrome ore.
  • Coal and petroleum coke are used as additives.
  • the amount of coal and petroleum coke is used to ensure the molar amount of C in petroleum coke. 1.2 times the molar amount of SiO 2 in the batch; mix the raw materials and mix in the ball mill for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage at 2600 °C for smelting and refining for 80 minutes; Blowing; sifting the ball to obtain a 0.2 to 5 mm magnesia-chromium hollow sphere.
  • the mass percentage of MgO in the magnesia-chromium hollow sphere is 78.3%, and the mass percentage of Cr 2 O 3 is 16.7%.
  • the product can be used as high-strength lightweight castable and lightweight brick aggregate.
  • Example 38 Magnesium-chromium hollow sphere and preparation method thereof
  • the proportion of raw materials is in mass percent, among which high-purity magnesia (mass content of MgO is more than 99.99%) 99.9% and high-purity chromium oxide (mass percentage of Cr 2 O 3 is more than 99.99%) 0.1%; After mixing, it is mixed in a ball mill for 1.4 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to be smelted at 3000 °C, and refined for 30 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain 0.2 to 5 mm of magnesium chromium. hollow ball. The content of MgO in the magnesia-chromium hollow sphere is 99.9%, and the mass percentage of Cr 2 O 3 is 0.1%.
  • the product can be used as a high-strength lightweight castable and a lightweight brick aggregate.
  • Example 39 Magnesium-chromium hollow sphere and preparation method thereof
  • the raw material ratio is in mass percentage, among which high-purity magnesia (mass content of MgO is more than 99.99%) 70% and high-purity chromium oxide (mass percentage of Cr 2 O 3 is more than 99.99%) 30%; After mixing, it is mixed in a ball mill for 1.4 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to be smelted at 3000 °C, and refined for 30 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain 0.2 to 5 mm of magnesium chromium. hollow ball.
  • the content of MgO in the magnesia-chromium hollow sphere is 70%, and the mass percentage of Cr 2 O 3 is 30%.
  • the product can be used as a high-strength lightweight castable and a lightweight brick aggregate.
  • Example 40 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 30% for industrial alumina, 33% for aluminum hydroxide, 8% for light-burned magnesia powder, 9% for slaked lime and 20% for limestone.
  • the amount of coal and coke is ensured that the molar amount of C is 1.2 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into the DC arc furnace to adjust the current.
  • the product can be used as high-strength lightweight castable aggregate.
  • Example 41 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 30% for high alumina bauxite, 20% for magnesia and 50% for limestone.
  • Graphite, petroleum coke, iron oxide black, iron and iron red are used as additives.
  • the amount of graphite and petroleum coke is guaranteed.
  • the molar amount is 1 times the molar amount of SiO 2 in the furnish, and the amount of iron oxide black, iron and iron red is ensured that the molar amount of Fe is 2.5 times the molar amount of SiO 2 in the furnish;
  • the raw materials are mixed and mixed in a ball mill for 1.8 hours;
  • the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2200 °C, and refined for 20 minutes.
  • the furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2-5 mm.
  • the mass percentage of Al 2 O 3 in the magnesia-alumina hollow sphere is 28.1%, the mass percentage of CaO is 34.8%, and the mass percentage of MgO is 32.1%.
  • the product can be used as a fast slagging agent, and can also be used as a high-strength light. Quality castable aggregate.
  • Example 42 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 20% aluminum slag, 20% aluminum hydroxide, 40% magnesite, and 20% calcite.
  • Graphite, petroleum coke, asphalt, iron filings and scrap iron are used as additives.
  • the amount of graphite, petroleum coke and asphalt is guaranteed to be 0.8 times the molar amount of SiO 2 in the batch.
  • the amount of iron scrap and scrap iron ensures the molar amount of Fe. It is 2.0 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to be melted at 2300 °C for melting, and refined for 10 minutes; the melting is finished.
  • the furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass percentage of Al 2 O 3 in the magnesia-alumina hollow sphere is 53.2%, the mass percentage of CaO is 15.8%, and the mass percentage of MgO is 30.0%.
  • the product can be used as high-strength lightweight castable aggregate.
  • Example 43 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 40% for industrial alumina, 30% for high alumina bauxite, 20% for dolomite, 5% for magnesia and 5% for limestone.
  • Calcined coke, charcoal, scrap and iron ore are used.
  • the amount of additive, calcined coke and charcoal is guaranteed to be 3 times the molar amount of SiO 2 in the batch; the amount of scrap and iron ore is used to ensure that the molar amount of Fe is 5 times the molar amount of SiO 2 in the furnish.
  • Example 44 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the proportion of raw materials in mass percentage is 85% for high alumina bauxite, 6% for light burnt magnesia powder, 5% for slaked lime and 4% for limestone.
  • the amount of coal and coke is ensured that the molar amount of C is 4 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace to adjust the current.
  • the voltage is smelted to 2100 °C to melt, refining for 10 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass percentage of Al 2 O 3 in the magnesia-alumina hollow sphere is 75.4%, the mass percentage of CaO is 6.0%, and the mass percentage of MgO is 13.6%.
  • the product can be used as a fast slag-forming agent or as a high-strength light. Quality castable aggregate.
  • Example 45 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the raw materials are 5% by mass of industrial alumina, 85% of magnesia and 10% of limestone.
  • the coal, coke, iron oxide black, iron and iron red are used as additives.
  • the amount of coal and coke is guaranteed to be C molar amount. 3 times the molar amount of SiO 2 in the furnish, the amount of iron oxide black, iron and iron red is ensured that the molar amount of Fe is 2.5 times the molar amount of SiO 2 in the furnish;
  • the raw materials are mixed and mixed in a ball mill for 1.8 hours;
  • Into the DC arc furnace adjust the current and voltage to smelt at 2000 °C to melt, refining for 20 minutes; smelting is finished, the furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 ⁇ 5mm.
  • the mass percentage of Al 2 O 3 in the magnesium-aluminum-calcium hollow sphere is 8.0 %, the mass percentage of CaO is 5.3%, and the mass percentage of MgO is 81.7 %.
  • the product can be used as high-strength lightweight castable aggregate.
  • Example 46 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the raw materials are 5% by mass of industrial alumina, 5% of aluminum hydroxide, 10% of magnesite, 77% of quicklime, and 3% of calcite.
  • Graphite, petroleum coke, asphalt, iron filings and scrap iron are used as additives.
  • the amount of graphite, petroleum coke and asphalt is guaranteed to be 0.8 times the molar amount of SiO 2 in the batch.
  • the amount of iron scrap and scrap iron ensures the molar amount of Fe. It is 2.0 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2300 °C, and refined for 40 minutes; the melting is finished.
  • the furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the magnesia-alumina hollow sphere is 8.6%, the content of CaO is 81.7%, and the mass percentage of MgO is 4.7%.
  • the product can be used as high-strength lightweight castable aggregate.
  • Example 47 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the percentage is more than 99.99% ⁇ 0.06%; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2300 °C, and refined for 40 minutes; The furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the magnesia-alumina hollow sphere is 99.9%, the content of CaO is 0.01%, and the mass percentage of MgO is 0.09%.
  • the product can be used as high-strength lightweight castable aggregate.
  • Example 48 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the percentage is more than 99.99% ⁇ 0.01%; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to be melted at 2300 °C for melting, and refined for 40 minutes; The furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass percentage of Al 2 O 3 in the magnesia-alumina hollow sphere is 0.09%, the mass percentage of CaO is 99.9%, and the mass percentage of MgO is 0.01%.
  • the product can be used as high-strength lightweight castable aggregate.
  • Example 49 Magnesium aluminum calcium hollow sphere and preparation method thereof
  • the raw material is high-purity aluminum hydroxide according to the mass percentage [Al ( OH ) 3 mass percentage greater than 99.99%] 0.015%, high-purity calcium oxide [CaO mass percentage greater than 99.99%] 0.089% and high-purity magnesia [MgO
  • the mass percentage is more than 99.99% ⁇ 99.896%; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace, and the current and voltage are adjusted to melt at 2800 °C for melting for 40 minutes; the melting is finished. The furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the magnesia-alumina hollow sphere is 0.01%, the content of CaO is 0.09%, and the mass percentage of MgO is 99.9%.
  • the product can be used as high-strength lightweight castable aggregate.
  • Example 50 Calcium oxide hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which 18% of slaked lime, 26% of limestone and 56% of quicklime; petroleum coke and iron filings are used as additives, and the amount of petroleum coke is used to ensure the molar amount of C in the graphite is the molar amount of SiO 2 in the furnish. 2 times, the amount of iron filings ensures that the molar amount of Fe in the iron filings is 3 times the molar amount of SiO 2 in the batch, and the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace to adjust the current and voltage.
  • the CaO mass percentage of the calcium oxide hollow sphere is 96%, which is used as a fast slagging agent and an alkaline composite brick lightweight insulation layer aggregate.
  • Example 51 Magnesia oxide hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, of which light burned magnesia powder 28%, magnesia 72% (the above two materials contain small amount of aluminum), graphite is used as additive, and the amount of graphite is used to ensure the molar amount of C in graphite is 3 times the molar amount of SiO 2 in the furnish; mix the raw materials and mix in a ball mill for 1 hour; put the batch into a three-phase electric arc furnace, adjust the current and voltage to smelt at 2900 ° C to melt, and refine for 40 minutes; The furnace was sprayed; the ball was sieved to obtain a magnesia hollow sphere of 0.2 to 5 mm.
  • the mass percentage of magnesium oxide in the magnesia hollow sphere is 95%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 52 Calcium oxide hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated according to the mass percentage, wherein the slaked lime [mass content of Ca(OH) 2 is more than 99.99%] 100%, put into the three-phase electric arc furnace, and the current and voltage are adjusted to be smelted at 2800 ° C for 40 minutes; After the smelting is finished, the furnace is sprayed; the ball is sieved to obtain an aluminum-aluminum hollow sphere having a low aluminum content of 0.2 to 5 mm. The content of CaO in the calcium oxide hollow sphere is 99.9%.
  • the product can be used as a fast slagging agent, or as a high-strength lightweight alkaline castable aggregate, or as a lightweight high-strength calcium thermal insulation brick. Can also be used as an alkaline dolomite composite brick lightweight insulation layer aggregate.
  • Example 53 Magnesium oxide hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high-purity light-burned magnesia powder [MgO mass percentage is greater than 99.99%] 100%
  • mass percentage among which high-purity light-burned magnesia powder [MgO mass percentage is greater than 99.99%] 100%
  • Example 54 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 88% and quicklime is 12%.
  • Petroleum coke, calcined coke and iron scrap are used as additives.
  • the amount of petroleum coke and calcined coke is guaranteed to be C molar amount. 0.8 times the molar amount of SiO 2 , the amount of iron filings ensures that the molar amount of Fe is twice the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace, and the adjustment is made.
  • the current and voltage were smelted to melt at 2000 ° C for 40 minutes; the melting was completed, and the furnace was sprayed; the ball was sieved to obtain an alumina-based aluminum-calcium hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the aluminum-calcium hollow sphere is 82.6%, and the content of CaO is 12.4%.
  • the product can be used as a fast slag-forming agent or as an aggregate of high-strength lightweight castables. For the preparation of lightweight high-strength aluminum-calcium insulation bricks.
  • Example 55 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 63%, slaked lime is 17%, limestone is 20%, coal and coke are used as additives, and the amount of coal and coke is used to ensure that the molar amount of C is the molar amount of SiO 2 in the furnish. 1.2 times; mix the raw materials and mix in the ball mill for 2 hours; put the batch into the DC arc furnace, adjust the current and voltage to smelt at 1800 °C to melt, refine for 10 minutes; smelting is finished, the furnace is sprayed; A bauxite-based aluminum-calcium hollow sphere of 0.2 to 5 mm was obtained.
  • the content of Al 2 O 3 in the aluminum-calcium hollow sphere is 66.3%, and the mass percentage of CaO is 28.7%.
  • the product can be used as a fast slag-forming agent or as an aggregate of high-strength lightweight castables. For the preparation of lightweight high-strength aluminum-calcium insulation bricks.
  • Example 56 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 65%, calcite is 17%, quicklime is 18%, coke, charcoal and iron ore are used as additives.
  • the amount of coke and charcoal is used to ensure the molar amount of C is SiO in the furnish. 3 times the amount of 2 moles, the amount of iron ore is guaranteed to be 2 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace to adjust the current.
  • the product can be used as a fast slag-forming agent or as an aggregate of high-strength lightweight castables. For the preparation of lightweight high-strength aluminum-calcium insulation bricks.
  • Embodiment 57 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 32% and slaked lime is 68%. Asphalt and iron red and iron oxide black are used as additives. The amount of asphalt is guaranteed to be 2 molar amount of SiO 2 in the furnish.
  • the amount of iron, iron red and iron oxide black is ensured that the molar amount of Fe is 4 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a three-phase electric arc furnace to adjust the current and The voltage was smelted to 1400 ° C to melt, and refined for 20 minutes; the smelting was completed, and the furnace was sprayed; the ball was sieved to obtain an alumina-based aluminum-calcium hollow sphere of 0.2 to 5 mm.
  • Al 2 O 3 in aluminum-calcium hollow spheres has a mass percentage of 33.1% and a CaO mass percentage of 61.9%.
  • the product can be used as a fast slag-forming agent or as an aggregate of high-strength lightweight castables. For the preparation of lightweight high-strength aluminum-calcium insulation bricks.
  • Example 58 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including high alumina bauxite 21%, limestone 51%, calcite 28%, graphite and scrap iron, scrap steel as additives, and the amount of graphite to ensure C molar amount is the molar amount of SiO 2 in the furnish.
  • the amount of scrap iron and scrap steel ensures that the molar amount of Fe is 5 times the molar amount of SiO 2 in the batch; after mixing the raw materials, it is mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace to adjust the current and The voltage was smelted at 2300 ° C for 20 minutes; the smelting was finished, and the furnace was sprayed; the ball was sieved to obtain an alumina-based aluminum-calcium hollow sphere of 0.2 to 5 mm. The content of Al 2 O 3 in the aluminum-calcium hollow sphere is 28.5%, and the content of CaO is 66.5%.
  • the product can be used as a fast slag-forming agent or as an aggregate of high-strength lightweight castables. For the preparation of lightweight high-strength aluminum-calcium insulation bricks.
  • Example 59 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 11%, slaked lime is 40%, quicklime is 49%, petroleum coke is used as additive, and the amount of petroleum coke is used to ensure that the molar amount of C in petroleum coke is the molar amount of SiO 2 in the furnish. 4 times; mix the raw materials and mix in the ball mill for 2 hours; put the batch into the DC arc furnace, adjust the current and voltage at 2600 ° C for smelting, refining for 40 minutes; smelting is finished, the furnace is blown; the ball is sieved An alumina-based aluminum-calcium hollow sphere of 0.2 to 5 mm was obtained.
  • the content of Al 2 O 3 in the aluminum-calcium hollow sphere is 10.4%, and the mass percentage of CaO is 84.6%.
  • the product can be used as a fast slag-forming agent or as an aggregate of high-strength lightweight castables.
  • For the preparation of lightweight high-strength aluminum-calcium insulation bricks it can be used as an alkaline composite brick lightweight insulation layer aggregate.
  • Example 60 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including 28% limestone and 72% calcite.
  • Graphite is used as additive. The amount of graphite is guaranteed to be 3 times the molar amount of SiO 2 in the mixture.
  • Calcium oxide hollow spheres The content of CaO in the calcium oxide hollow sphere is 95%.
  • the product can be used as a fast slag-forming agent, or as a high-strength lightweight alkaline castable aggregate, or as a lightweight high-strength calcium thermal insulation brick. Can also be used as an alkaline dolomite composite brick lightweight insulation layer aggregate.
  • Example 61 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 98% and quicklime is 2%.
  • Petroleum coke, calcined coke and iron scrap are used as additives.
  • the amount of petroleum coke and calcined coke is guaranteed to be C molar amount. 0.8 times the molar amount of SiO 2 , the amount of iron filings ensures that the molar amount of Fe is twice the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace, and the adjustment is made.
  • the current and voltage were smelted to 2400 ° C for melting and refining for 40 minutes; after the melting was completed, the furnace was sprayed; the ball was sieved to obtain an alumina-based aluminum-calcium hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the aluminum-calcium hollow sphere is 92.9%, and the content of CaO is 2.1%.
  • the product can be used as the aggregate of high-strength lightweight castable, and can also be used as the preparation of lightweight high-strength aluminum-calcium insulation brick. And composite brick lightweight insulation layer aggregate.
  • Example 62 Aluminum-calcium hollow sphere and preparation method thereof
  • the raw materials are proportioned by mass percentage, using industrial alumina 87%, quicklime 13%, using graphite as an additive, and the amount of graphite ensures that the molar amount of C in the graphite is 4 times the molar amount of SiO 2 in the furnish; Mixing in a ball mill for 1 hour; putting the batch into a DC arc furnace, adjusting the current and voltage to melt at 2100 ° C to melt, refining for 10 minutes; smelting is finished, the furnace is blown; the ball is sieved to obtain 0.2 to 5 mm of aluminum and calcium. hollow ball. It has the ability to slag and increase the slagging speed.
  • the Al 2 O 3 mass percentage of the aluminum-calcium hollow sphere is 83.2%, and the CaO mass percentage is 11.8%, which is used as the aluminum-calcium composite brick lightweight heat insulation layer aggregate and slagging agent.
  • Example 63 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including 58% aluminum hydroxide, 20% hydrated lime, and 22% limestone.
  • the petroleum coke and iron filings are used as additives.
  • the amount of petroleum coke is used to ensure the molar amount of C in petroleum coke is SiO 2 in the furnish. 3 times the molar amount, the amount of iron filings ensures that the molar amount of Fe in the iron filings is twice the molar amount of SiO 2 in the furnish; after mixing the raw materials, it is mixed in a ball mill for 2 hours; the batch is put into a three-phase electric arc furnace.
  • the current and voltage were adjusted to smelt at 1800 ° C to melt, and refining for 30 minutes; after the melting was completed, the furnace was sprayed; the ball was sieved to obtain an aluminum-aluminum hollow sphere of 0.2 to 5 mm.
  • the Al 2 O 3 content of the aluminum-calcium hollow sphere is 55.6%, and the CaO mass percentage is 39.4%, which is used as a rapid slagging agent.
  • Embodiment 64 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which industrial alumina is 38% and calcite is 62%; graphite and iron filings are used as additives, and the amount of graphite is ensured that the molar amount of C is 3 times that of SiO 2 in the batch, and iron filings
  • the dosage is ensured that the molar amount of Fe in the iron filings is 5 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace, and the current and voltage are adjusted to melt at 1900 ° C to melt.
  • the Al 2 O 3 content of the aluminum-calcium hollow sphere is 50.6%, and the CaO mass percentage is 44.6%, which can be used as a rapid slagging agent.
  • Example 65 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which industrial alumina is 10% and quicklime is 90%.
  • Graphite is used as additive. The amount of graphite is used to ensure that the molar amount of C in graphite is 1.2 times of the molar amount of SiO 2 in the furnish.
  • Aluminium-calcium hollow spheres have an Al 2 O 3 mass percentage of 9.9% and a CaO mass percentage of 85.1%, which can be used as a slag-forming agent and an alkaline composite brick lightweight insulation layer aggregate.
  • Example 66 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including 5% aluminum hydroxide and 95% quicklime.
  • Graphite, petroleum coke and iron scrap are used as additives.
  • the amount of graphite and petroleum coke is used to ensure the molar amount of C in the graphite is SiO 2 mole in the furnish. 2 times the amount, the amount of iron filings ensures that the molar amount of Fe in the iron filings is 3 times the molar amount of SiO 2 in the batch, and the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace to adjust the current.
  • the voltage is smelted to 2400 ° C to melt, refining for 30 minutes; the melting is finished, the furnace is sprayed; the ball is sieved to obtain an aluminum-calcium hollow sphere of 0.2 to 5 mm.
  • the content of Al 2 O 3 in the aluminum-calcium hollow sphere is 3.3%, and the mass percentage of CaO is 91.7%. It is used as a slag-forming agent and an alkaline composite brick lightweight insulation layer aggregate.
  • Example 67 Calcium oxide hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which 18% of slaked lime, 26% of limestone and 56% of quicklime; petroleum coke and iron filings are used as additives, and the amount of petroleum coke is used to ensure the molar amount of C in the graphite is the molar amount of SiO 2 in the furnish. 2 times, the amount of iron filings ensures that the molar amount of Fe in the iron filings is 3 times the molar amount of SiO 2 in the batch, and the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace to adjust the current and voltage.
  • the CaO mass percentage of the calcium oxide hollow sphere is 96%, which is used as a fast slagging agent and an alkaline composite brick lightweight insulation layer aggregate.
  • Example 68 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including high alumina bauxite 20%, industrial alumina 30%, aluminum hydroxide 8%, slaked lime 20%, limestone 22%, petroleum coke and iron filings as additives, petroleum coke
  • the dosage ensures that the molar amount of C in the petroleum coke is 3 times of the molar amount of SiO 2 in the furnish.
  • the amount of iron scraps ensures that the molar amount of Fe in the iron scrap is twice the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in the ball mill.
  • the batch is put into a three-phase electric arc furnace, the current and voltage are adjusted to smelt at 1800 ° C to melt, and refined for 30 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain an aluminum-calcium hollow sphere of 0.2 to 5 mm.
  • the Al 2 O 3 mass percentage of the aluminum-calcium hollow sphere is 62.8%, and the CaO mass percentage is 32.2%, which is used as a slag-forming agent and an alkaline composite brick lightweight heat-insulating layer aggregate.
  • Example 69 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including high alumina bauxite 50%, industrial alumina 20%, aluminum hydroxide 10%, quicklime 5%, slaked lime 5%, limestone 5%, calcite 5%, petroleum coke and Iron scrap as an additive, the amount of petroleum coke is guaranteed to be 3 times the molar amount of SiO 2 in the petroleum coke, and the amount of iron scrap is ensured that the molar amount of Fe in the iron scrap is twice the molar amount of SiO 2 in the furnish; After the raw materials are mixed, they are mixed in a ball mill for 2 hours; the batch is put into a three-phase electric arc furnace, the current and voltage are adjusted to smelt at 1800 ° C for melting, and refining for 30 minutes; after the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2.
  • the Al 2 O 3 mass percentage of the aluminum-calcium hollow sphere is 79.2%, and the CaO mass percentage is 15.8%, which is used as a slag-forming agent and an alkaline composite brick lightweight insulation layer aggregate.
  • Example 70 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite 40%, industrial alumina 20%, aluminum slag 20%, aluminum hydroxide 10%, quicklime 3%, hydrated lime 3%, limestone 2%, calcite 2%
  • the amount of petroleum coke is used to ensure that the molar amount of C in petroleum coke is three times that of SiO 2 in the furnish.
  • the amount of iron scraps ensures that the molar amount of Fe in the iron scrap is the molar amount of SiO 2 in the furnish.
  • Example 71 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including high alumina bauxite 5%, industrial alumina 5%, aluminum slag 3%, aluminum hydroxide 7%, quicklime 20%, slaked lime 20%, limestone 20%, calcite 20%.
  • the amount of petroleum coke is used to ensure that the molar amount of C in petroleum coke is three times that of SiO 2 in the furnish.
  • the amount of iron scraps ensures that the molar amount of Fe in the iron scrap is the molar amount of SiO 2 in the furnish.
  • Example 72 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including 72% limestone and 28% calcite.
  • Graphite and scrap iron and scrap steel are used as additives.
  • the amount of graphite is guaranteed to be 1 times the molar amount of SiO 2 in the batch, scrap iron,
  • the amount of scrap steel is ensured that the molar amount of Fe is 5 times the molar amount of SiO 2 in the batch;
  • the raw materials are mixed and mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace, and the current and voltage are adjusted to be smelted at 2900 ° C, and refined. 20 minutes; the smelting is finished, the furnace is sprayed; the ball is sieved to obtain a calcium oxide hollow sphere of 0.2 to 5 mm.
  • the CaO content in calcium oxide is 95%, which is used as an alkaline composite brick lightweight insulation layer aggregate and a rapid slagging agent.
  • Example 73 Corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage. Among them, high alumina bauxite is 100%, and the desiliconization material is graphite. The amount of C is determined to be 1.2 times the number of moles of SiO 2 in the high alumina bauxite. Proportionally mixed and ready for use. After the preparation of the electric arc furnace smelting is completed, it is added to the furnace for melting. After the material temperature reaches 1500 °C, the top of the electric arc furnace is opened, and the reduction reaction occurs during the smelting of the mixture, and the ram is gradually removed. Silica and impurities, the raw material is completely melted, and the current is refined for 30 minutes.
  • the electrode rod is lifted, and the corundum hollow sphere is prepared by pouring the furnace immediately.
  • the bottom material of the furnace cannot be used for preparing the corundum hollow sphere, but can be used for Preparation of brown fused alumina.
  • the sifted ball having a particle size of between 0.2 and 5 mm is used as the final product.
  • the mass percentage of Al 2 O 3 in corundum hollow sphere is 94.1%, which can be used as corundum hollow ball brick, corundum hollow ball composite brick, silicon carbide composite brick, corundum-mullite composite brick, high alumina and corundum hollow. Ball castable aggregate.
  • Example 74 Corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite 10%, industrial alumina 85%, aluminum hydroxide 5%, desiliconization material uses coke and charcoal, and the amount of C is guaranteed to be C mole in coke and charcoal. 4 times of the number of moles of SiO 2 in high alumina bauxite, the above raw materials are proportioned and mixed for use, and after the preparation of the electric arc furnace smelting is completed, it is added to the furnace for melting, and after the material temperature reaches 1500 ° C, the top of the arc furnace is blown. The reduction reaction occurs during the smelting of the mixture, and the silica and impurities in the alumina are gradually removed.
  • the raw material is completely melted, and the current is refined for 30 minutes. After the temperature reaches 2100 ° C, the electrode rod is lifted, and the corrugated hollow sphere is prepared by immediately pouring the furnace.
  • the bottom material of the furnace cannot be used to prepare corundum hollow spheres, but can be used to prepare brown corundum.
  • the sifted ball having a particle size of between 0.2 and 5 mm is used as the final product.
  • the mass percentage of Al 2 O 3 in corundum hollow sphere is 95.2%, which can be used as corundum hollow ball brick, corundum hollow ball composite brick, silicon carbide composite brick, corundum-mullite composite brick, high alumina and corundum hollow. Ball castable aggregate.
  • Example 75 Corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 80%, industrial alumina is 15%, and aluminum hydroxide is 5%.
  • the desiliconization material is made up of petroleum coke, calcined coke, coal and iron filings.
  • the total amount of petroleum coke, calcined coke and coal is guaranteed to be 0.8 times the number of moles of SiO 2 in high alumina bauxite.
  • the amount of iron scrap is guaranteed to be the number of moles of SiO 2 in high alumina bauxite. 5 times, the above raw materials are proportioned and mixed for use. After the electric arc furnace smelting preparation work is completed, it is added to the furnace for melting.
  • the top of the arc furnace is exhausted, and the reduction reaction occurs during the melting of the mixture.
  • the bottom material of the furnace cannot be used for preparation.
  • Corundum hollow ball but can be used to prepare brown fused alumina.
  • the raw materials After the spraying, some of the raw materials are not formed into balls or broken, and can be further added to the furnace for smelting next time, and the obtained ball having a particle size of 0.2 to 5 mm obtained by sieving is used as the final product.
  • the mass percentage of Al 2 O 3 in the corundum hollow sphere is 95.5%, which can be used as corundum hollow ball brick, corundum hollow ball composite brick, silicon carbide composite brick, corundum-mullite composite brick, high alumina and corundum hollow. Ball castable aggregate.
  • Example 76 Corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite 50%, industrial alumina 10, aluminum slag 35, aluminum hydroxide 5%, desiliconization material from coke, asphalt, charcoal and iron ore, iron red, The iron oxide black is mixed.
  • the total amount of coke, asphalt and charcoal is guaranteed to be 1.5 times the number of moles of SiO 2 in the high alumina bauxite.
  • the total amount of iron ore, iron red and iron oxide black is guaranteed.
  • the molar number of Fe is twice that of the SiO 2 in the high alumina bauxite.
  • the above raw materials are mixed and mixed for use.
  • the furnace is smelted and the arc is turned on after the temperature reaches 1500 ° C.
  • the reduction reaction occurs during the smelting process of the mixture, and the silica and impurities in the bauxite are gradually removed.
  • the raw material is completely melted and then the current is refined for 30 minutes.
  • the electrode rod is lifted and the furnace is immediately sprayed.
  • the corundum hollow sphere is prepared by blowing, and the bottom material of the furnace cannot be used for preparing the corundum hollow sphere, but can be used for preparing brown corundum.
  • the mass percentage of Al 2 O 3 in corundum hollow sphere is 95.6%, which can be used as corundum hollow ball brick, corundum hollow ball composite brick, silicon carbide composite brick, corundum-mullite composite brick, high alumina and corundum hollow. Ball castable aggregate.
  • Example 77 Corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which aluminum slag is 100%, desiliconization material is made of coke, charcoal and iron red, scrap iron and scrap steel.
  • the total amount of coke and charcoal is guaranteed to be C aluminum. 3 times the number of moles of SiO 2 in bauxite, the total amount of iron red, scrap iron and scrap steel ensures that the mole of Fe is three times that of SiO 2 in high bauxite, and the above raw materials are proportioned and mixed well.
  • the electric arc furnace smelting preparation work is completed and added to the furnace for melting.
  • the top of the electric arc furnace is blown, and the reduction reaction occurs during the smelting process of the mixture to gradually remove the silica and impurities in the bauxite.
  • the current is refined for 30 minutes.
  • the electrode rod is lifted, and the corundum hollow sphere is prepared by pouring the furnace immediately.
  • the bottom material of the furnace cannot be used for preparing the corundum hollow sphere, but can be used for preparing brown corundum.
  • the sifted ball having a particle size of between 0.2 and 5 mm is used as the final product.
  • the mass percentage of Al 2 O 3 in corundum hollow sphere is 95.8%, which can be used as corundum hollow ball brick, corundum hollow ball composite brick, silicon carbide composite brick, corundum-mullite composite brick, high alumina and corundum hollow. Ball castable aggregate.
  • Example 78 Corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 100%, petroleum coke, calcined coke and iron scrap are used as additives.
  • the amount of petroleum coke and calcined coke is ensured that the molar amount of C is the molar amount of SiO 2 in the furnish.
  • the amount of iron filings ensures that the molar amount of Fe is twice the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace to adjust the current and voltage.
  • corundum high temperature hollow sphere 2300 ° C smelting to melt, refining for 40 minutes; smelting is finished, the furnace is sprayed; the ball is sieved to obtain a corundum high temperature hollow sphere of 0.2 to 5 mm.
  • the mass percentage of Al 2 O 3 in corundum hollow sphere is 95.3%, which can be used as corundum hollow ball brick, corundum hollow ball composite brick, silicon carbide composite brick, corundum-mullite composite brick, high alumina and corundum hollow. Ball castable aggregate.
  • Example 79 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 95% and magnesite is 5%. Petroleum coke, calcined coke and iron scrap are used as additives. The amount of petroleum coke and calcined coke is guaranteed to be C molar amount.
  • the amount of iron scraps is ensured that the molar amount of Fe is twice the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace, The current and voltage were adjusted to melt at 2100 ° C for melting, and refining for 10 minutes; after the melting was completed, the furnace was sprayed; the ball was sieved to obtain an alumina-based hollow aluminum sphere of 0.2 to 5 mm.
  • Magnesium-aluminum hollow spheres have a percentage of alumina of 92.3% and a percentage of magnesium oxide of 2.7%. They can be used as magnesium-aluminum hollow sphere bricks, magnesium-aluminum composite bricks, corundum composite bricks, corundum-mullite composite bricks, and high alumina.
  • Example 80 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated according to the mass percentage, of which 81% of high alumina bauxite, 11% of magnesite, 8% of light burned magnesia powder, coal and coke are used as additives, and the amount of coal and coke is used to ensure the molar amount of C is the ingredient. 1.2 times the molar amount of SiO 2 ; the raw materials are mixed and mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace, and the current and voltage are adjusted to melt at 2200 ° C for melting, and refining for 40 minutes; The furnace was sprayed; the ball was sieved to obtain a magnesium aluminum hollow sphere of 0.2 to 5 mm.
  • the magnesium alumina hollow sphere has a percentage of alumina of 80.2% and a percentage of magnesium oxide of 14.8%. It can be used as magnesium-aluminum hollow ball brick, magnesium-aluminum composite brick, corundum composite brick, corundum-mullite composite brick, high-aluminum composite brick and magnesium aluminum hollow ball castable aggregate.
  • Example 81 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 77% and magnesia sand is 23%.
  • Coke, charcoal and iron ore are used as additives.
  • the amount of coke and charcoal is used to ensure the molar amount of C is the molar amount of SiO 2 in the furnish. 3 times, the amount of iron ore is guaranteed to be 2 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace to adjust the current and voltage.
  • Magnesium-aluminum hollow spheres have a percentage of alumina of 70.9% and a magnesium oxide percentage of 24.1%. They can be used as magnesium-aluminum hollow sphere bricks, magnesium-aluminum composite bricks, corundum composite bricks, corundum-mullite composite bricks, and alkaline. Composite brick, high alumina composite brick and magnesium aluminum hollow sphere castable aggregate.
  • Example 82 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 69%, magnesite is 15%, magnesia is 16%, asphalt and iron red, iron oxide black are used as additives, and the amount of asphalt is guaranteed to be C molar amount.
  • the amount of iron red and iron oxide black is ensured that the molar amount of Fe is 4 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.5 hours; In the electric arc furnace, the current and voltage are adjusted and smelted at 2400 ° C for 30 minutes; after the smelting is finished, the furnace is sprayed; the ball is sieved to obtain a magnesium-aluminum hollow sphere of 0.2 to 5 mm. The content of alumina in the magnesium aluminum hollow sphere is 68.6%, and the mass percentage of magnesium oxide is 26.4%. It can be used as magnesium-aluminum hollow ball brick, magnesium-aluminum composite brick, corundum composite brick, corundum-mullite composite brick, alkaline composite brick, high-aluminum composite brick and magnesium aluminum hollow ball castable aggregate.
  • Example 83 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 75% and light burned magnesia powder is 25%.
  • Graphite and scrap iron and scrap steel are used as additives.
  • the amount of graphite is used to ensure the molar amount of C is the molar amount of SiO 2 in the furnish.
  • the amount of scrap iron and scrap steel ensures that the molar amount of Fe is 5 times the molar amount of SiO 2 in the batch; after mixing the raw materials, it is mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace to adjust the current and The voltage was smelted to 2400 ° C to melt, and refined for 20 minutes; after the melting was completed, the furnace was sprayed; the ball was sieved to obtain a magnesium aluminum hollow sphere of 0.2 to 5 mm.
  • the content of alumina in the magnesium aluminum hollow sphere is 69.4%, and the mass percentage of magnesium oxide is 25.6%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 84 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 11% and magnesite is 89%.
  • Petroleum coke is used as additive.
  • the amount of petroleum coke is used to ensure that the molar amount of C in petroleum coke is 4 mol of SiO 2 in the furnish.
  • the content of alumina in the magnesium-aluminum hollow sphere is 17.3%, and the mass percentage of magnesium oxide is 77.7%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 85 Magnesia oxide hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, of which light burned magnesia powder 28%, magnesia 72% (the above two materials contain small amount of aluminum), graphite is used as additive, and the amount of graphite is used to ensure the molar amount of C in graphite is 3 times the molar amount of SiO 2 in the furnish; mix the raw materials and mix in a ball mill for 1 hour; put the batch into a three-phase electric arc furnace, adjust the current and voltage to smelt at 2900 ° C to melt, and refine for 40 minutes; The furnace was sprayed; the ball was sieved to obtain a magnesia hollow sphere of 0.2 to 5 mm.
  • the mass percentage of magnesium oxide in the magnesia hollow sphere is 95%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 86 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 99% and magnesite is 1%. Petroleum coke, calcined coke and iron scrap are used as additives. The amount of petroleum coke and calcined coke is guaranteed to be C molar amount.
  • the amount of iron scraps is ensured that the molar amount of Fe is twice the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace, The current and voltage were adjusted to melt at 2300 ° C for melting, and refining for 10 minutes; after the melting was completed, the furnace was sprayed; the ball was sieved to obtain a magnesium aluminum hollow sphere of 0.2 to 5 mm. The content of alumina in the magnesium aluminum hollow sphere is 94.5%, and the mass percentage of magnesium oxide is 0.5%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 87 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, of which 100% magnesia is made of coke, charcoal and iron ore.
  • the amount of coke and charcoal is guaranteed to be 3 times the molar amount of SiO 2 in the batch, iron ore.
  • the amount of Fe is guaranteed to be twice the molar amount of SiO 2 in the furnish; after mixing the raw materials, it is mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace, and the current and voltage are adjusted to melt at 2900 ° C, and refined. 30 minutes; smelting is finished, the furnace is sprayed; the ball is sieved to obtain a magnesium oxide high temperature resistant hollow sphere of 0.2 to 5 mm.
  • Magnesium oxide content of 97% can be used as magnesium hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium hollow sphere castable aggregate.
  • Example 88 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which light burned magnesia powder 28%, magnesia 72% (both of which contain small amount of aluminum), graphite is used as additive, and the amount of graphite is used to ensure the molar amount of C in graphite is the ingredient. 4 times the molar amount of SiO 2 ; mix the raw materials and mix in a ball mill for 1 hour; put the batch into a three-phase electric arc furnace, adjust the current and voltage to smelt at 2800 ° C until melting, refining for 10 minutes; The furnace was sprayed; the ball was sieved to obtain a magnesia hollow sphere of 0.2 to 5 mm.
  • the magnesium oxide hollow sphere has a mass percentage of magnesium oxide of 96%, and can be used as a magnesia hollow sphere brick, a magnesium aluminum composite brick, an alkaline composite brick and a magnesium hollow sphere castable aggregate.
  • Example 89 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which 11% of aluminum hydroxide and 89% of magnesite use petroleum coke and iron filings as additives.
  • the amount of petroleum coke ensures that the molar amount of C in petroleum coke is the molar amount of SiO 2 in the furnish.
  • the amount of iron filings ensures that the molar amount of Fe in the iron filings is twice the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace to adjust the current and The voltage was smelted at 2,600 ° C and refined for 20 minutes; the smelting was completed, and the furnace was sprayed; the ball was sieved to obtain a magnesium-aluminum hollow sphere of 0.2 to 5 mm.
  • the magnesium alumina hollow sphere has a percentage of alumina of 13.8% and a percentage of magnesium oxide of 81.2%. It can be used as magnesium hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium hollow sphere castable aggregate.
  • Example 90 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which industrial alumina is 30%, magnesia is 70%, petroleum coke and graphite are used as additives, and the amount of petroleum coke and graphite is used to ensure the added molar amount of C is the molar amount of SiO 2 in the furnish. 1.2 times; mix the raw materials and mix in the ball mill for 2 hours; put the batch into the three-phase electric arc furnace, adjust the current and voltage to 2500 °C to melt, refining for 30 minutes; smelting is finished, the furnace is sprayed; A magnesium-aluminum hollow sphere of 0.2 to 5 mm was obtained.
  • the magnesium alumina hollow sphere has a percentage of alumina of 28.9% and a percentage of magnesium oxide of 66.1%. It can be used as magnesium hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium hollow sphere castable aggregate.
  • Example 91 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, of which industrial alumina is 42%, magnesite is 28%, magnesia is 30%, graphite and iron filings are used as additives, and the amount of graphite is guaranteed to be C molar amount of SiO 2 molar amount in the furnish. 0.8 times, the amount of iron filings ensures that the molar amount of Fe is 5 times the molar amount of SiO 2 in the batch; after mixing the raw materials, it is mixed in a ball mill for 1.5 hours; the batch is put into a three-phase electric arc furnace to adjust the current and voltage.
  • magnesium-aluminum hollow sphere of 0.2 to 5 mm.
  • the percentage of alumina in the magnesium-aluminum hollow sphere is 47.1%, and the percentage of magnesium oxide is 47.9%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 92 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high alumina bauxite is 63% and magnesia is 37%.
  • Graphite is used as additive. The amount of graphite is ensured that the molar amount of C is 1.8 times of the molar amount of SiO 2 in the furnish; After being mixed in a ball mill for 1.2 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2400 ° C until melting, and refining for 25 minutes; after the melting is finished, the furnace is sprayed; the ball is sieved to obtain 0.2 to 5 mm of magnesium.
  • Aluminum hollow ball is
  • the percentage of alumina in the magnesium-aluminum hollow sphere is 56.9%, and the percentage of magnesium oxide is 38.1%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 93 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including high alumina bauxite 30%, industrial alumina 20%, aluminum slag 20%, aluminum hydroxide 3%, light burned magnesia powder 9%, magnesia 9%, or diamond.
  • Magnesium ore 9%, using graphite and iron filings as additives the amount of graphite to ensure that the molar amount of C is 1 times the molar amount of SiO 2 in the furnish, the amount of iron scraps to ensure that the molar amount of Fe is three times the molar amount of SiO 2 in the furnish;
  • Magnesium-aluminum hollow spheres have a percentage of alumina of 73% and a percentage of magnesium oxide of 22%. They can be used as cast aluminum aggregates, magnesium-aluminum composite bricks, alkaline composite bricks and magnesium-aluminum hollow spheres.
  • Example 94 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including high alumina bauxite 50%, industrial alumina 20%, aluminum hydroxide 3%, light burned magnesia powder 9%, magnesia 9%, or magnesite 9%.
  • the amount of petroleum coke is ensured that the molar amount of C is twice the molar amount of SiO 2 in the furnish, and the amount of iron scraps ensures that the molar amount of Fe is four times the molar amount of SiO 2 in the furnish;
  • After mixing it is mixed in a ball mill for 1.6 hours; the batch is put into a three-phase electric arc furnace, the current and voltage are adjusted to melt at 2300 ° C to be melted, and refined for 30 minutes; after the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2 to 5 mm.
  • Magnesium aluminum hollow ball The percentage of alumina in the magnesium-aluminum hollow sphere is 71.3%, and the percentage of magnesium oxide is 23.7%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 95 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including high alumina bauxite 10%, industrial alumina 70%, aluminum hydroxide 5%, light burned magnesia powder 5%, magnesia 5%, or magnesite 5%.
  • mass percentage including high alumina bauxite 10%, industrial alumina 70%, aluminum hydroxide 5%, light burned magnesia powder 5%, magnesia 5%, or magnesite 5%.
  • the amount of petroleum coke is ensured that the molar amount of C is 0.8 times the molar amount of SiO 2 in the furnish.
  • the amount of iron scraps ensures that the molar amount of Fe is 2.5 times the molar amount of SiO 2 in the furnish; After mixing, it is mixed in a ball mill for 1 hour; the batch is put into a three-phase electric arc furnace, the current and voltage are adjusted to melt at 2300 ° C to melt, and refined for 35 minutes; the melting is finished, the furnace is blown; the ball is sieved to obtain 0.2-5 mm.
  • Magnesium-aluminum hollow spheres have an alumina content of 82.8% and a magnesium oxide percentage of 12.2%. They can be used as magnesium-aluminum hollow sphere bricks, magnesium-aluminum composite bricks, alkaline composite bricks and magnesium-aluminum hollow sphere castable aggregates.
  • Example 96 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated according to the mass percentage, among which 91% of aluminum slag, 3% of light burned magnesia powder, 3% of magnesia, 3% of magnesite, graphite and iron filings are used as additives, and the amount of graphite is guaranteed to be C molar amount.
  • the amount of iron filings is 0.8 times the molar amount of SiO 2 in the furnish.
  • the amount of iron scrap is 2 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1 hour; the batch is put into a DC arc furnace.
  • Magnesium-aluminum hollow spheres have a percentage of alumina of 89.1% and a percentage of magnesia of 5.9%. They can be used as cast aluminum aggregates, magnesium-aluminum composite bricks, alkaline composite bricks and magnesium-aluminum hollow spheres.
  • Example 97 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, of which industrial alumina is 98%, magnesite is 2%, SiO 2 content in raw material formula is calculated as 0.4%, petroleum coke, graphite and iron filings are used as additives, petroleum coke and graphite.
  • the dosage is ensured that the molar amount of C is 0.8 times of the molar amount of SiO 2 in the furnish, and the amount of iron scrap is ensured that the molar amount of Fe is twice the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1 hour; It is put into a three-phase electric arc furnace, and the current and voltage are adjusted to be melted at 2300 ° C to be melted and refined for 15 minutes.
  • magnesium aluminum hollow sphere 0.2 to 5 mm.
  • the content of alumina in the magnesium-aluminum hollow sphere is 94.1%, and the percentage of magnesium oxide is 0.9%. It can be used as the aggregate of magnesium-aluminum hollow sphere brick, magnesium-aluminum composite brick, alkaline composite brick and magnesium-aluminum hollow sphere.
  • Example 98 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 99.91%, slaked lime [mass percentage of CaO is more than 99.99%] 0.09%, and the raw materials are matched.
  • high-purity aluminum hydroxide mass percentage of Al(OH) 3 is more than 99.99%] 99.91%
  • slaked lime mass percentage of CaO is more than 99.99%] 0.09%
  • the raw materials are matched.
  • the content of Al 2 O 3 in the aluminum-calcium hollow sphere is 99.9%
  • the content of CaO
  • Example 99 Aluminum-calcium hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, wherein high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is greater than 99.99%] 0.12%, slaked lime [mass percentage of CaO is greater than 99.99%] 99.88%, input into three phases
  • high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is greater than 99.99%] 0.12%
  • slaked lime [mass percentage of CaO is greater than 99.99%] 99.88%
  • the product can be used as a fast slagging agent or as a high-strength lightweight alkaline castable aggregate. It can be used as a lightweight high-strength calcium thermal insulation brick, and can also be used as a lightweight thermal insulation layer aggregate for alkaline dolomite composite brick.
  • Example 100 Calcium oxide hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, including 16% slaked lime, 26% limestone and 58% quicklime.
  • the use of petroleum coke and iron scrap as the additive ensures that the molar amount of C in the graphite is the molar amount of SiO 2 in the furnish. 2 times, the amount of iron filings ensures that the molar amount of Fe in the iron filings is 3 times the molar amount of SiO 2 in the batch, and the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace to adjust the current and voltage.
  • the CaO mass percentage of the calcium oxide hollow sphere is 96%, which is used as a fast slagging agent and an alkaline composite brick lightweight insulation layer aggregate.
  • Example 101 Zirconium corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, wherein high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 95.42%, high-purity monoclinic zirconia [mass percentage of ZrO 2 is more than 99.99%] 4.58%, the above raw materials are proportioned and mixed in a ball mill, and placed in front of the furnace for use. After the electric arc furnace smelting preparation work is completed, it is added to the furnace for melting until the raw material is completely melted. Thereafter, the current is refined for 20 minutes, the temperature reaches 2400 ° C, and the electrode rod is lifted, and immediately the furnace is sprayed to form a zirconia toughened alumina hollow sphere.
  • the granules have a bulk density of 0.82 g/cm 3 between 0.2 and 5 mm, and the zirconium corundum is melted.
  • the block 1100 ° C water-cooled three-time compressive strength retention rate was 84%, and the fracture toughness was 4.9 MPa.m 1/2 .
  • the mass percentage of Al 2 O 3 in the zirconium corundum hollow sphere is 91.3%, and the mass percentage of ZrO 2 is 6.7%. It can be used as high-performance corundum hollow spherical brick aggregate, corundum composite brick lightweight insulation layer aggregate and High thermal shock resistant lightweight castable aggregate.
  • Example 102 Zirconium corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 93.23%, high-purity monoclinic zirconia [mass percentage of ZrO 2 is more than 99.99%] 6.77%, the above raw materials are proportioned and mixed in a ball mill, and placed in front of the furnace for use. After the electric arc furnace smelting preparation work is completed, it is added to the furnace for melting until the raw material is completely melted. Thereafter, the current is refined for 20 minutes, the temperature reaches 2100 ° C, and the electrode rod is lifted, and immediately the furnace is sprayed to form a zirconium corundum hollow sphere.
  • the particle size of the ball obtained by sieving is between 0.2 and 5 mm, and the bulk density of the ball is 0.78 g/cm 3 , and the zirconium corundum is melted.
  • the block three-time compressive strength retention rate of 1100 ° C water cooling was 81%, and the fracture toughness was 5.4 MPa.m 1/2 .
  • the content of Al 2 O 3 in the zirconium corundum hollow sphere is 90%, and the mass percentage of zirconia is 10%. It can be used as high-performance corundum hollow spherical brick aggregate, corundum composite brick lightweight insulation layer aggregate and High thermal shock resistant lightweight castable aggregate.
  • Example 103 Zirconium corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 99.93%, high-purity monoclinic zirconia [mass percentage of ZrO 2 is more than 99.99%] 0.07%, the above raw materials are proportioned and mixed in a ball mill, and placed in front of the furnace for use. After the electric arc furnace smelting preparation work is completed, it is added to the furnace for melting until the raw material is completely melted. Thereafter, the current is refined for 20 minutes, the temperature reaches 2100 ° C, and the electrode rod is lifted, and immediately the furnace is sprayed to form a zirconium corundum hollow sphere.
  • the particle size of the ball obtained by sieving is between 0.2 and 5 mm, and the bulk density of the ball is 0.78 g/cm 3 , and the zirconium corundum is melted.
  • the block three-time compressive strength retention rate of 1100 ° C water cooling was 81%, and the fracture toughness was 5.4 MPa.m 1/2 .
  • the content of Al 2 O 3 in the zirconium corundum hollow sphere is 99.9%, and the mass percentage of zirconia is 0.1%. It can be used as high-performance corundum hollow spherical brick aggregate, corundum composite brick lightweight insulation layer aggregate and High thermal shock resistant lightweight castable aggregate.
  • Example 104 Corundum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage. Among them, high alumina bauxite is 100%, and the desiliconization material is graphite. The amount of C is determined to be 1.2 times the number of moles of SiO 2 in the high alumina bauxite. Proportionally mixed and ready for use. After the preparation of the electric arc furnace smelting is completed, it is added to the furnace for melting. After the material temperature reaches 1500 °C, the top of the electric arc furnace is opened, and the reduction reaction occurs during the smelting of the mixture, and the ram is gradually removed. Silica and impurities, the raw material is completely melted, and the current is refined for 30 minutes.
  • the electrode rod is lifted, and the corundum hollow sphere is prepared by pouring the furnace immediately.
  • the bottom material of the furnace cannot be used for preparing the corundum hollow sphere, but can be used for Preparation of brown fused alumina.
  • the sifted ball having a particle size of between 0.2 and 5 mm is used as the final product.
  • the content of Al 2 O 3 in the corundum hollow sphere is 93%, which can be used as corundum hollow ball brick, corundum hollow ball composite brick, silicon carbide composite brick, corundum-mullite composite brick, high alumina and corundum hollow. Ball castable aggregate.
  • Example 105 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 99.93%, high-purity light-burned magnesia [mass percentage of MgO is more than 99.99%] 0.07 %, the raw materials are mixed and mixed in a ball mill for 2 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted to melt at 2100 ° C to melt, and refined for 10 minutes; the melting is finished, the furnace is blown; the ball is sieved An alumina-based magnesia-aluminum hollow sphere of 0.2 to 5 mm was obtained.
  • Magnesium-aluminum hollow spheres have a percentage of alumina of 99.9% and a percentage of magnesia of 0.1%. They can be used as magnesium-aluminum hollow sphere bricks, magnesium-aluminum composite bricks, corundum composite bricks, corundum-mullite composite bricks, and high alumina. Composite brick and magnesium aluminum hollow ball castable aggregate.
  • Example 106 Magnesium aluminum hollow sphere and preparation method thereof
  • the ratio of raw materials is calculated by mass percentage, among which high-purity aluminum hydroxide [mass percentage of Al(OH) 3 is more than 99.99%] 0.15%, high-purity light-burned magnesia powder [mass percentage of MgO is more than 99.99%] 99.85%; mix the raw materials and mix in the ball mill for 1 hour; put the batch into the three-phase electric arc furnace, adjust the current and voltage to smelt at 2800 °C to melt, refine for 40 minutes; smelting is finished, the furnace is blown;
  • the magnesium oxide hollow spheres of 0.2 to 5 mm were obtained by sieving.
  • the content of alumina in the magnesia hollow sphere is 0.1%, and the mass percentage of magnesia is 99.9%. It can be used as castable aggregate of magnesium aluminum hollow ball brick, magnesium aluminum composite brick, alkaline composite brick and magnesium aluminum hollow sphere.
  • Example 107 magnesium titanium hollow sphere and preparation method thereof
  • the proportion of raw materials is 0.01% of magnesia and 3% of titanium oxide powder.
  • Coke, charcoal and iron red are used as additives.
  • the amount of coke and charcoal is guaranteed to be 3 times the molar amount of SiO 2 in the furnish.
  • the amount of iron red is ensured that the molar amount of Fe is twice the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.6 hours; the batch is put into a DC arc furnace, and the current and voltage are adjusted to be smelted at 2800 °C.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • Example 108 magnesium titanium hollow sphere and preparation method thereof
  • the raw material ratio is by mass percentage, among which light burned magnesia powder is 78.0%, magnesia is 18.0% and high titanium slag is 4.0%.
  • Petroleum coke is used as additive. The amount of petroleum coke is used to ensure the molar amount of C in petroleum coke is SiO in the furnish. 4 times of 2 molar amount; mix the raw materials and mix in the ball mill for 2 hours; put the batch into the DC arc furnace, adjust the current and voltage to smelt at 3000 °C, refining for 40 minutes; smelting is finished, the furnace is blown; The ball is sieved to obtain a magnesium-titanium high temperature resistant hollow sphere of 0.2 to 5 mm. The content of MgO in the magnesium-titanium hollow sphere is 91.5%, and the mass percentage of TiO 2 is 3.5%.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • Example 109 magnesium titanium hollow sphere and preparation method thereof
  • the proportion of raw materials is in mass percentage, of which light burned magnesia powder is 49% and magnesite is 47%. 1, titanium oxide powder 1% and high titanium slag 3%, using coal, graphite, asphalt, iron ore and iron red as additives, the amount of coal, graphite and asphalt to ensure that the molar amount of C in petroleum coke is the molar amount of SiO 2 in the furnish 0.8 times, the amount of iron ore and iron red is guaranteed to be 5 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.8 hours; the batch is put into a DC arc furnace to adjust the current and voltage.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • Example 110 magnesium titanium hollow sphere and preparation method thereof
  • the proportion of raw materials is 0.01% by mass, 69.0% of light burned magnesia, 11.0% of magnesite and 3.0% of high titanium slag.
  • Petroleum coke, iron oxide black and iron filings are used as additives, petroleum coke
  • the dosage ensures that the molar amount of C in the petroleum coke is 3 times of the molar amount of SiO 2 in the furnish.
  • the amount of iron oxide black and iron scraps ensures that the molar amount of Fe is twice the molar amount of SiO 2 in the furnish; after the raw materials are mixed, the ball mill is used.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • Example 111 magnesium titanium hollow sphere and preparation method thereof
  • the proportion of raw materials is 0.01%, magnesia slag 1.3% and titanium oxide powder 0.7%.
  • Charcoal, graphite, iron ore and scrap are used as additives.
  • the amount of charcoal and graphite is used to ensure C in petroleum coke.
  • the molar amount is twice the molar amount of SiO 2 in the furnish.
  • the amount of iron ore and scrap steel ensures that the molar amount of Fe is 3.4 times the molar amount of SiO 2 in the furnish; the raw materials are mixed and mixed in a ball mill for 1.4 hours; In the DC arc furnace, the current and voltage are adjusted at 2800 °C for smelting and refining for 30 minutes.
  • the furnace is sprayed; the ball is sieved to obtain a magnesium-titanium high temperature resistant hollow sphere of 0.2 to 5 mm.
  • the content of MgO in the magnesium-titanium hollow sphere is 91.1%, and the mass percentage of TiO 2 is 3.9%.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • Example 112 magnesium titanium hollow sphere and preparation method thereof
  • the ratio of raw materials is 100% by mass, magnesium oxide slag is 99%, high titanium slag is 0.5%, and titanium oxide powder is 0.5%.
  • Coal and petroleum coke are used as additives.
  • the amount of coal and petroleum coke is used to ensure C molar amount in petroleum coke. It is 1.2 times the molar amount of SiO 2 in the batch; the raw materials are mixed and mixed in a ball mill for 1.8 hours; the batch is put into a DC arc furnace, the current and voltage are adjusted and smelted at 3200 °C for 80 minutes; the melting is finished, the furnace is poured. Spraying; sieving the ball to obtain a magnesium-titanium high temperature resistant hollow sphere of 0.2 to 5 mm. The content of MgO in the magnesium-titanium hollow sphere is 94.1%, and the mass percentage of TiO 2 is 0.9%.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • Example 113 magnesium titanium hollow sphere and preparation method thereof
  • the proportion of raw materials is 100% by mass, among which high-purity magnesia (MgO mass percentage greater than 99.99%) 99% and high-purity titanium oxide powder (TiO 2 mass percentage greater than 99.99%) 0.1%; Mixing in a ball mill for 1.8 hours; putting the batch into a DC arc furnace, adjusting the current and voltage at 3200 °C for smelting and refining for 50 minutes; after melting, the furnace is blown; the ball is sieved to obtain a magnesium-titanium high temperature resistant hollow of 0.2 to 5 mm. ball.
  • the content of MgO in the magnesium-titanium hollow sphere is 99.9%, and the mass percentage of TiO 2 is 0.1%.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • Example 114 magnesium titanium hollow sphere and preparation method thereof
  • the raw material ratio is in mass percentage, among which high-purity magnesia (MgO mass percentage greater than 99.99%) 90.0% and high-purity titanium oxide powder (TiO 2 mass percentage greater than 99.99%) 10.0%;
  • the ball mill is mixed for 1.8 hours; the batch is put into the DC arc furnace, the current and voltage are adjusted and smelted at 3200 °C for 40 minutes; the melting is finished, the furnace is blown; the ball is sieved to obtain the magnesium-titanium high temperature resistant hollow of 0.2 ⁇ 5 mm. ball.
  • the content of MgO in the magnesium-titanium hollow sphere is 90.0%, and the mass percentage of TiO 2 is 10.0%.
  • the product can be used as high-strength lightweight castable and lightweight brick and alkaline composite brick aggregate.
  • the raw material ratio is in mass percentage, among which high-purity aluminum hydroxide (Al(OH) 3 %>99.99%) 99.932%, high-purity hydrated lime (Ca(OH) 2 %>99.99%) 0.00864%, high-purity light-burned magnesia (MgO%>99.99%) 0.00654%, high purity chromium oxide (Cr 2 O 3 %>99.99%) 0.00654%, high purity monoclinic zirconia (ZrO 2 %>99.99%) 0.00654% and high purity titanium oxide (TiO 2 %>99.99%) 0.03964%; mix the raw materials and mix in the ball mill for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage to 2150 ° C to melt, refining for 20 minutes; Spraying; sieving the ball to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass fraction of Al 2 O 3 in the magnesia-alumina hollow sphere is 99.9%, the mass fraction of CaO is 0.01%, the mass fraction of MgO is 0.01%, the mass fraction of Cr 2 O 3 is 0.01%, the mass fraction of ZrO 2 is 0.01%, TiO 2
  • the mass score is 0.06%.
  • the raw material ratio is in mass percentage, among which high-purity aluminum hydroxide (Al(OH) 3 %>99.99%) 0.0694%, high-purity hydrated lime (Ca(OH) 2 %>99.99%) 99.9003%, high-purity light-burned magnesia (MgO%>99.99%)0.00757%, high purity chromium oxide (Cr 2 O 3 %>99.99%) 0.00757%, high purity monoclinic zirconia (ZrO 2 %>99.99%) 0.00757% and high purity titanium oxide (TiO 2 %>99.99%) 0.00757%; mix the raw materials and mix in the ball mill for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage to smelt at 2200 ° C to melt, refining for 20 minutes; Spraying; sieving the ball to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass fraction of Al 2 O 3 in the magnesia-alumina hollow sphere is 0.06%, the mass fraction of CaO is 99.9%, the mass fraction of MgO is 0.01%, the mass fraction of Cr 2 O 3 is 0.01%, the mass fraction of ZrO 2 is 0.01%, TiO 2 The mass fraction is 0.01%.
  • the raw material ratio is in mass percentage, among which high-purity aluminum hydroxide (Al(OH) 3 %>99.99%) 0.0153%, high-purity hydrated lime (Ca(OH) 2 %>99.99%) 0.0793%, high-purity light-burned magnesia (MgO%>99.99%) 99.875%, high purity chromium oxide (Cr 2 O 3 %>99.99%) 0.01%, high purity monoclinic zirconia (ZrO 2 %>99.99%) 0.01% and high purity titanium oxide (TiO 2 %>99.99%) 0.01%; mix the raw materials and mix them in a ball mill for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage to smelt at 2200 °C to melt, refining for 20 minutes; Spraying; sieving the ball to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass fraction of Al 2 O 3 in the magnesia-alumina hollow sphere is 0.01%, the mass fraction of CaO is 0.06%, the mass fraction of MgO is 99.9%, the mass fraction of Cr 2 O 3 is 0.01%, the mass fraction of ZrO 2 is 0.01%, TiO 2 The mass fraction is 0.01%.
  • the raw material ratio is in mass percentage, among which high-purity aluminum hydroxide (Al(OH) 3 %>99.99%) 17.60%, high-purity hydrated lime (Ca(OH) 2 %>99.99%) 22.22%, high-purity light-burned magnesia (MgO%>99.99%) 15.93%, high purity chromium oxide (Cr 2 O 3 %>99.99%) 26.55%, high purity monoclinic zirconia (ZrO 2 %>99.99%) 8.85% and high purity titanium oxide (TiO 2 %>99.99%) 8.85%; mix the raw materials and mix in the ball mill for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage to 2150 ° C to melt, refining for 20 minutes; Spraying; sieving the ball to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass fraction of Al 2 O 3 in the magnesia-alumina hollow sphere is 13.0%, the mass fraction of CaO is 19.0%, the mass fraction of MgO is 18.0%, the mass fraction of Cr 2 O 3 is 30.0%, the mass fraction of ZrO 2 is 10.0%, TiO 2 The mass score is 10.0%.
  • the raw material ratio is in mass percentage, among which high-purity aluminum hydroxide (Al(OH) 3 %>99.99%) 4.4%, high-purity hydrated lime (Ca(OH) 2 %>99.99%) 10.1%, high-purity light-burned magnesia (MgO%>99.99%) 10.6%, high purity chromium oxide (Cr 2 O 3 %>99.99%) 13.4%, high purity monoclinic zirconia (ZrO 2 %>99.99%) 3.9% and high purity titanium oxide (TiO 2 %>99.99%) 57.6%; mix the raw materials and mix them in the ball mill for 1.8 hours; put the batch into the DC arc furnace, adjust the current and voltage to smelt at 2200 °C to melt, refining for 20 minutes; Spraying; sieving the ball to obtain a magnesium-aluminum-calcium high-temperature hollow sphere of 0.2 to 5 mm.
  • the mass fraction of Al 2 O 3 in the magnesia-alumina hollow sphere is 3.0%, the mass fraction of CaO is 8.0%, the mass fraction of MgO is 11.0%, the mass fraction of Cr 2 O 3 is 14.0%, the mass fraction of ZrO 2 is 4.0%, TiO 2
  • the mass score is 60.0%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

L'invention concerne une sphère creuse résistante à une température élevée et son procédé de préparation. La sphère creuse résistante à une température élevée comprend un ou plusieurs parmi Al2O3, CaO, MgO, Cr2O3, ZrO2 et TiO2. Le procédé comprend l'utilisation d'une substance contenant de l'aluminium, d'une substance contenant du magnésium, d'une substance contenant du calcium, d'une substance contenant du chrome, d'une substance contenant du zirconium et d'une substance contenant du titane comme matériau brut principal ; l'introduction d'additif pour ajuster la composition et la viscosité de la masse fondue ; la fusion dans un four pour minerai à arc électrique à CA (courant alternatif) triphasé ou dans un four pour minerai à arc électrique à CC (courant continu) ; le versement de la masse fondue ; le soufflage à l'air et le tamisage pour obtenir la sphère creuse résistante à une température élevée d'une taille de 0,2-5 mm. La sphère creuse résistante à une température élevée présente les caractéristiques de haute résistance à la compression, de bonne résistance au choc thermique et de bonne propriété d'isolation thermique, et convient pour une utilisation comme agrégat dans un matériau d'isolation thermique et un matériau de moulage léger.
PCT/CN2011/075096 2011-03-11 2011-06-01 Sphère creuse résistante à une température élevée et son procédé de préparation WO2012122745A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
CN 201110057983 CN102180687A (zh) 2011-03-11 2011-03-11 一种矾土基镁铝空心球及其制备方法
CN201110057983.9 2011-03-11
CN201110058060.5 2011-03-11
CN201110057981XA CN102180686A (zh) 2011-03-11 2011-03-11 一种矾土基铝钙空心球及其制备方法
CN201110058086.X 2011-03-11
CN201110057981.X 2011-03-11
CN 201110058060 CN102180688A (zh) 2011-03-11 2011-03-11 一种铝钙空心球及其制备方法
CN 201110058086 CN102180689A (zh) 2011-03-11 2011-03-11 一种镁铝空心球及其制备方法

Publications (1)

Publication Number Publication Date
WO2012122745A1 true WO2012122745A1 (fr) 2012-09-20

Family

ID=46830041

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/075096 WO2012122745A1 (fr) 2011-03-11 2011-06-01 Sphère creuse résistante à une température élevée et son procédé de préparation

Country Status (1)

Country Link
WO (1) WO2012122745A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112791699A (zh) * 2021-01-20 2021-05-14 辽宁科技大学 一种ZrO2/煤沥青基复合活性炭球的制备方法
CN112897999A (zh) * 2021-01-27 2021-06-04 湖南华菱涟源钢铁有限公司 铁水包扒渣板用浇注料、铁水包扒渣板及其制备方法
CN112939041A (zh) * 2021-02-11 2021-06-11 贵州大学 一种利用棕刚玉除尘灰强化低品位铝土矿脱硅的方法
CN113800895A (zh) * 2021-08-24 2021-12-17 萍乡市金刚科技工业园有限公司 一种耐磨锆铝复合球及制备方法
CN114890775A (zh) * 2022-06-02 2022-08-12 凤城市千誉钛业有限公司 一种钛渣冶炼矿热炉的炉衬材料及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792317A (zh) * 2010-03-09 2010-08-04 浙江大学 一种高强度氧化铝空心球的制备方法
CN101798230A (zh) * 2010-03-09 2010-08-11 浙江大学 一种氧化锆增韧氧化铝空心球的制备方法
CN101863675A (zh) * 2010-06-07 2010-10-20 浙江大学 一种高铝结构隔热一体化复合砖及制备方法
CN101863672A (zh) * 2010-06-01 2010-10-20 浙江大学 一种矾土基刚玉空心球的制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101792317A (zh) * 2010-03-09 2010-08-04 浙江大学 一种高强度氧化铝空心球的制备方法
CN101798230A (zh) * 2010-03-09 2010-08-11 浙江大学 一种氧化锆增韧氧化铝空心球的制备方法
CN101863672A (zh) * 2010-06-01 2010-10-20 浙江大学 一种矾土基刚玉空心球的制备方法
CN101863675A (zh) * 2010-06-07 2010-10-20 浙江大学 一种高铝结构隔热一体化复合砖及制备方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112791699A (zh) * 2021-01-20 2021-05-14 辽宁科技大学 一种ZrO2/煤沥青基复合活性炭球的制备方法
CN112897999A (zh) * 2021-01-27 2021-06-04 湖南华菱涟源钢铁有限公司 铁水包扒渣板用浇注料、铁水包扒渣板及其制备方法
CN112939041A (zh) * 2021-02-11 2021-06-11 贵州大学 一种利用棕刚玉除尘灰强化低品位铝土矿脱硅的方法
CN113800895A (zh) * 2021-08-24 2021-12-17 萍乡市金刚科技工业园有限公司 一种耐磨锆铝复合球及制备方法
CN114890775A (zh) * 2022-06-02 2022-08-12 凤城市千誉钛业有限公司 一种钛渣冶炼矿热炉的炉衬材料及其制备方法

Similar Documents

Publication Publication Date Title
WO2012122745A1 (fr) Sphère creuse résistante à une température élevée et son procédé de préparation
WO2011081267A1 (fr) Procédé et appareil pour la récupération de métaux de valeur à partir de scories et pour la production d'agrégats multifonctions
WO2010087636A2 (fr) Liant activé par un alcalin et mortier, béton, produits de béton et matériau de pavage à base d'argile rouge humide activé par un alcali mettant en oeuvre le liant
WO2014017710A1 (fr) Composition de liant hydraulique utilisant une poudre de laitier de four-poche refroidi rapidement, et son procédé de préparation
US4331773A (en) Refractory composition
WO2012064004A1 (fr) Liant hydraulique durcissant de manière ultra-rapide utilisant des poudres de laitier de réduction, et procédé de préparation dudit liant
WO2018016781A1 (fr) Mélange à résistance initiale élevée contenant du laitier pour béton de ciment et son procédé de production
WO2018016780A1 (fr) Mélange à résistance initiale élevée contenant un composé de calcium pour béton de ciment et son procédé de production
WO2018216932A1 (fr) Procédé de fabrication de produit moulé en mousse
CN1003011B (zh) 含氧氮化铝的耐火材料，滑动水口耐火材料及连续铸钢水口
WO2015074349A1 (fr) Procédé permettant de préparer un matériau de contact électrique composite composé d'argent, d'oxyde métallique et de graphite, et son produit
CN112142448A (zh) 一种转炉出钢口喷补料及其制备方法
WO2018079868A1 (fr) Composition de ciment écologique à faible retrait et à faible teneur en carbone comprenant des cendres volantes minéralisées par du carbone et un agent d'expansion de type à résistance initiale et béton les comprenant
CN107010967B (zh) 一种vod炉用无铬镁质复合砖及其制备方法
CN113603461A (zh) 一种rh高附着率喷补料及其制备方法
WO2023080428A1 (fr) Nanoparticules pour le développement précoce d'une résistance du béton, composition de mise en forme de béton les comprenant, et leur procédé de préparation
CN1296319C (zh) 矾土基电熔锆刚玉尖晶石的制备方法
KR100383101B1 (ko) 열복사율이 우수한 무기계 내화도료
WO2021132891A1 (fr) Flux à base d'aluminate de calcium utilisant un sous-produit industriel, son procédé de fabrication et procédé de désulfuration d'acier fondu l'utilisant
JP2596681B2 (ja) ジルコニア・ムライト含有キャスタブル耐火物
WO2010024545A2 (fr) Procédé de production adiabatique de matériau cuit au moyen d'un four vertical
WO2018194397A4 (fr) Procédé de fusion d'ilménite à l'aide de boue rouge
KR20010019748A (ko) 폐 마그크로 연와를 이용한 부정형 내화물
US10093576B2 (en) Unshaped refractory material
JP2832064B2 (ja) 溶融アルミナ・マグネシア系組成物及び耐火物製品

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11860894

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11860894

Country of ref document: EP

Kind code of ref document: A1