CN108101562B - Steel ladle castable for high manganese steel smelting and preparation method thereof - Google Patents
Steel ladle castable for high manganese steel smelting and preparation method thereof Download PDFInfo
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- 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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
- C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
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- 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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
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- 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
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- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5212—Organic
Abstract
The invention relates to a ladle castable for high manganese steel smelting and a preparation method thereof. The scheme is as follows: 43-68 wt% of microporous corundum particles and 10-27 wt% of magnesia-alumina spinel particles are used as aggregate, and 5-15 wt% of microporous corundum fine powder, 2-4 wt% of magnesia-alumina spinel micro powder, 4-8 wt% of pseudo-boehmite and 2-4 wt% of rho-Al2O3Fine powder, 0.1-1 wt% of monoclinic phase zirconia fine powder and 0.1-1.5 wt% of manganese powder are taken as substrates, and the sum of the aggregate and the substrates is taken as raw materials; the additive is prepared from 0.04-0.08 wt% of organic fibers, 0.1-0.5 wt% of polycarboxylic acid water reducing agent, 0.2-0.5 wt% of maleic acid and 0.01-0.03 wt% of defoaming agent. Stirring the matrix, the additive and water to obtain a premix; and (3) scattering the aggregate into a mold, pouring the premix into the mold, forming, drying and demolding to prepare the ladle castable for smelting the high manganese steel. The invention has high strength, good thermal shock stability, excellent erosion resistance and steel slag erosion resistance and can improve the quality of high manganese steel.
Description
Technical Field
The invention belongs to the technical field of ladle castable. In particular to a ladle castable for smelting high manganese steel and a preparation method thereof.
Background
Scientists studied the use of manganese in steel since the beginning of the 19 th century, and then discovered that manganese in steel not only increased the hardness of steel but also ensured the ductility and toughness of steel not to decrease. The low manganese steel with the manganese content less than 3 percent has poor toughness, and when the manganese content in the steel is more than 13 percent, the strength and the toughness of the steel are improved. The early 11% -14% of manganese steel is mainly applied to the military fields of helmets, armored tanks, armor piercing bullets and the like, and the high manganese steel is widely applied to high-load and high-abrasion environments such as metallurgy, mines, building materials, automobiles, agricultural machinery, war industry and the like. In addition, manganese remains in the steel after being deoxidized by ferromanganese in steel making, and can improve the quality of the steel, and the manganese and sulfur form MnS, thereby reducing the harmful effect of the sulfur, reducing the brittleness of the steel, and improving the hot workability of the steel.
The refractory material plays an important role in the steel smelting process, and different smelting stages have different requirements on the refractory material, for example, the furnace body mainly adopts magnesia carbon bricks in the EAF smelting process, and the furnace cover mainly adopts a manganese-containing corundum castable. AOD, VOD smelting process mainly adopts burnt magnesia-calcium brick, burnt dolomite brick and magnesia-calcium-zirconium brick, also directly uses unburned magnesia dolomite brick, these refractory materials directly contact with molten steel in the steel smelting process, the free impurity elements existing in the molten steel can react with the refractory materials, produce inclusion in the steel, for example, magnesia carbon refractory materials can increase spinel inclusion and carbon content in aluminum killed steel.
In the smelting process of the steel ladle, Mg-containing refractory materials volatilize Mg vapor at high temperature and react with impurity element Al in molten steel to generate Al-Mg spinel inclusion, so that the cleanliness of the molten steel is influenced; the carbon-containing refractory material can increase the carbon content in molten steel, reduce the toughness of steel and influence the quality of steel. In addition, the refractory material is easy to peel off and damage under the erosion action of the molten steel, the service life of the refractory material is shortened, and the cleanliness of the molten steel is also influenced. The prior ladle refractory material has the disadvantages of rapid corrosion loss in the smelting process of high manganese steel, unfavorable control of elements in steel and restriction on production of high manganese steel.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high manganese steel smelting ladle castable which has high strength, good thermal shock stability, excellent scouring resistance and steel slag erosion resistance and can improve the quality of high manganese steel and a preparation method thereof.
In order to realize the purpose, the invention adopts the technical scheme that: using 43-68 wt% of microporous corundum particles and 10-27 wt% of magnesium aluminate spinel particles as aggregates, and using 5-15 wt% of microporous corundum fine powder, 2-4 wt% of magnesium aluminate spinel micro powder, 4-8 wt% of pseudo-boehmite, and 2-4 wt% of rho-Al2O3Fine powder, 0.1-1 wt% of monoclinic phase zirconia fine powder and 0.1-1.5 wt% of manganese powder are used as matrixes, and the sum of the aggregates and the matrixes is used as a raw material. In an amount of 0.04 to up to0.08wt% of organic fiber,
0.1-0.5 wt% of polycarboxylic acid water reducing agent, 0.2-0.5 wt% of maleic acid and 0.01-0.03 wt% of defoaming agent are used as additives.
Premixing the substrate and the additive, adding water accounting for 4-10 wt% of the raw materials, and stirring for 2-4 minutes to obtain a premix; and (3) installing a mould, uniformly scattering the aggregate into the mould, pouring the premix into the mould, carrying out vibration forming, carrying out heat preservation for 12-48 hours at the temperature of 110-200 ℃, and demoulding to obtain the ladle castable for smelting the high manganese steel.
Al of the microporous corundum particles2O3The content is more than or equal to 99.5 wt%; the microporous corundum particles are as follows: the apparent porosity is less than or equal to 5.22 percent, the closed porosity is more than or equal to 7.5 percent, the median pore diameter is less than or equal to 0.2 mu m, and the particle diameter of the microporous corundum particles is 20-0.088 mm.
Al of the magnesium aluminate spinel particles2O3The content is 70-75 wt%; the particle size of the magnesia-alumina spinel particles is 8-1 mm.
ZrO of the monoclinic phase zirconia fine powder2Content (wt.)>95 wt%; the particle size of the monoclinic phase zirconia fine powder is<0.088mm。
Al of the microporous corundum fine powder2O3The content is more than or equal to 99.5 wt%; the microporous corundum fine powder: the apparent porosity is less than or equal to 5.22 percent, the closed porosity is more than or equal to 7.5 percent, the median pore diameter is less than or equal to 0.2 mu m, and the grain diameter of the microporous corundum fine powder<0.088mm。
Al of the magnesia-alumina spinel micropowder2O3Content (wt.)>88 wt%; particle size D of magnesia-alumina spinel micropowder502 to 6 μm.
Peptization index of the pseudoboehmite>97 wt%; particle size D of pseudo-boehmite500.2 to 5 μm.
The rho-Al2O3Fine powder of Al2O3The content is more than or equal to 80 wt%; the rho-Al2O3Particle diameter D of fine powder501 to 5 μm.
The Mn content in the manganese powder is more than 99.7 wt%, and the particle size of the manganese powder is 0.025-0.15 mm.
The defoaming agent is one of silicone ether co-cluster, organic siloxane, polyether, silicone oil composite, amine-containing, imine and amide.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following positive effects:
(1) mn adopted by the invention is easily oxidized into MnO by taking Mn as a center from inside to outside in sequence in the temperature rising process2、Mn3O4And MnO gradient material, and Al in refractory material at high temperature2O3∙ MgO reacts to generate spinel solid solution, which not only improves the toughness of the ladle castable for smelting high manganese steel, but also reduces the infiltration erosion of molten steel to the ladle castable for smelting high manganese steel.
(2) The monoclinic phase zirconia adopted by the invention is subjected to phase change when the temperature is raised, and generates in-situ stress with the formation of manganese-containing spinel solid solution, the superplasticity of the nano alumina promotes the formation of a micro-closed pore matrix, and the phase change of the zirconia can offset the shrinkage of the material when the temperature is lowered, so that the monoclinic phase zirconia is matched with the prefabricated microporous corundum, and the thermal shock resistance and the steel slag erosion resistance of the ladle castable for smelting high manganese steel are comprehensively improved.
(3) The Mn adopted by the invention can be directly dissolved or infiltrated into the molten steel in the form of a manganese compound in addition to oxidation and solid solution formation, so that the Mn content in the smelted high manganese steel is increased, and the performance of the high manganese steel is improved.
The detection shows that the ladle castable for smelting the high manganese steel prepared by the invention is as follows: the bulk density is 2.95-3.20 g/cm3(ii) a The apparent porosity is 10.1-12.8%; the normal-temperature rupture strength (110 ℃ for 24h) is 4-9 MPa, and the normal-temperature rupture strength (1600 ℃ for 3h) is 14-22 MPa; the high-temperature rupture strength is 14-20 MPa; the normal temperature compressive strength (110 ℃ for 24h) is 35-56 MPa, and the normal temperature compressive strength (1600 ℃ for 3h) is 65-85 MPa; the linear change rate (1600 ℃ for 3h) is 0.5-2.0%; under the water cooling condition of 1100 ℃, the thermal shock frequency is more than or equal to 10 times.
Therefore, the invention has the characteristics of high strength, good thermal shock stability, excellent scouring resistance and steel slag erosion resistance and capability of improving the quality of the high manganese steel.
Detailed Description
The invention is further described with reference to specific embodiments, without limiting the scope of protection.
In order to avoid repetition, the raw materials and the additives related to the present specific embodiment are described below in a unified manner, and are not described in detail in the examples:
al of the microporous corundum particles2O3The content is more than or equal to 99.5 wt%; the microporous corundum particles are as follows: the apparent porosity is less than or equal to 5.22 percent, the closed porosity is more than or equal to 7.5 percent, the median pore diameter is less than or equal to 0.2 mu m, and the particle diameter of the microporous corundum particles is 20-0.088 mm.
Al of the magnesium aluminate spinel particles2O3The content is 70-75 wt%; the particle size of the magnesia-alumina spinel particles is 8-1 mm.
ZrO of the monoclinic phase zirconia fine powder2Content (wt.)>95 wt%; the particle size of the monoclinic phase zirconia fine powder is<0.088mm。
Al of the microporous corundum fine powder2O3The content is more than or equal to 99.5 wt%; the microporous corundum fine powder: the apparent porosity is less than or equal to 5.22 percent, the closed porosity is more than or equal to 7.5 percent, the median pore diameter is less than or equal to 0.2 mu m, and the grain diameter of the microporous corundum fine powder<0.088mm。
Al of the magnesia-alumina spinel micropowder2O3Content (wt.)>88 wt%; particle size D of magnesia-alumina spinel micropowder502 to 6 μm.
Peptization index of the pseudoboehmite>97 wt%; particle size D of pseudo-boehmite500.2 to 5 μm.
The rho-Al2O3Fine powder of Al2O3The content is more than or equal to 80 wt%; the rho-Al2O3Particle diameter D of fine powder501 to 5 μm.
The Mn content in the manganese powder is more than 99.7 wt%, and the particle size of the manganese powder is 0.025-0.15 mm.
Example 1
A ladle castable for smelting high manganese steel and a preparation method thereof.
43-53 wt% of microporous corundum particles and 19-27 wt% of magnesia-alumina spinel particles are used as aggregate, 11-15 wt% of microporous corundum fine powder,2-4 wt% of magnesia-alumina spinel micro powder, 4-5 wt% of pseudo-boehmite, and 2-4 wt% of rho-Al2O3Fine powder, 0.1-1 wt% of monoclinic phase zirconia fine powder and 0.7-1.5 wt% of manganese powder are used as matrixes, and the sum of the aggregates and the matrixes is used as a raw material; organic fiber accounting for 0.04-0.08 wt% of the raw material, a polycarboxylic acid water reducing agent accounting for 0.1-0.5 wt%, maleic acid accounting for 0.2-0.5 wt% and a defoaming agent accounting for 0.01-0.03 wt% are taken as additives.
Premixing the substrate and the additive, adding water accounting for 4-7 wt% of the raw materials, and stirring for 2-4 minutes to obtain the premix. And (3) installing a mould, uniformly scattering the aggregate into the mould, pouring the premix into the mould, carrying out vibration forming, carrying out heat preservation for 36-48 hours at the temperature of 110-170 ℃, and demoulding to obtain the ladle castable for smelting the high manganese steel.
The defoaming agent is silicon ether co-cluster.
Example 2
A ladle castable for smelting high manganese steel and a preparation method thereof.
By taking 48-58 wt% of microporous corundum particles and 16-24 wt% of magnesia-alumina spinel particles as aggregates, 9-13 wt% of microporous corundum fine powder, 2-4 wt% of magnesia-alumina spinel micro powder, 5-6 wt% of pseudo-boehmite and 2-4 wt% of rho-Al2O3Fine powder, 0.1-1 wt% of monoclinic phase zirconia fine powder and 0.5-1.3 wt% of manganese powder are used as matrixes, and the sum of the aggregates and the matrixes is used as a raw material; organic fiber accounting for 0.04-0.08 wt% of the raw material, a polycarboxylic acid water reducing agent accounting for 0.1-0.5 wt%, maleic acid accounting for 0.2-0.5 wt% and a defoaming agent accounting for 0.01-0.03 wt% are taken as additives.
Premixing the substrate and the additive, adding water accounting for 5-8 wt% of the raw materials, and stirring for 2-4 minutes to obtain the premix. And (3) installing a mould, uniformly scattering the aggregate into the mould, pouring the premix into the mould, carrying out vibration forming, carrying out heat preservation for 28-40 hours at the temperature of 120-180 ℃, and demoulding to obtain the ladle castable for smelting the high manganese steel.
The defoaming agent is organic siloxane.
Example 3
A ladle castable for smelting high manganese steel and a preparation method thereof.
53-63 wt% of microporous corundum particles and 13-21 wt% of magnesia-alumina spinel particles are used as aggregates, 7-11 wt% of microporous corundum fine powder, 2-4 wt% of magnesia-alumina spinel micro powder, 6-7 wt% of pseudo-boehmite, and 2-4 wt% of rho-Al2O3Fine powder, 0.1-1 wt% of monoclinic phase zirconia fine powder and 0.3-1.1 wt% of manganese powder are used as matrixes, and the sum of the aggregates and the matrixes is used as a raw material; organic fiber accounting for 0.04-0.08 wt% of the raw material, a polycarboxylic acid water reducing agent accounting for 0.1-0.5 wt%, maleic acid accounting for 0.2-0.5 wt% and a defoaming agent accounting for 0.01-0.03 wt% are taken as additives.
Premixing the substrate and the additive, adding 6-9 wt% of water of the raw materials, and stirring for 2-4 minutes to obtain the premix. And (3) installing a mould, uniformly scattering the aggregate into the mould, pouring the premix into the mould, carrying out vibration forming, carrying out heat preservation for 20-32 hours at the temperature of 130-190 ℃, and demoulding to obtain the ladle castable for smelting the high manganese steel.
The defoaming agent is an amide.
Example 4
A ladle castable for smelting high manganese steel and a preparation method thereof.
58-68 wt% of microporous corundum particles and 10-18 wt% of magnesia-alumina spinel particles are used as aggregate, 5-9 wt% of microporous corundum fine powder, 2-4 wt% of magnesia-alumina spinel micro powder, 7-8 wt% of pseudo-boehmite, and 2-4 wt% of rho-Al2O3Fine powder, 0.1-1 wt% of monoclinic phase zirconia fine powder and 0.1-0.9 wt% of manganese powder are used as matrixes, and the sum of the aggregates and the matrixes is used as a raw material; organic fiber accounting for 0.04-0.08 wt% of the raw material, a polycarboxylic acid water reducing agent accounting for 0.1-0.5 wt%, maleic acid accounting for 0.2-0.5 wt% and a defoaming agent accounting for 0.01-0.03 wt% are taken as additives.
Premixing the substrate and the additive, adding water accounting for 7-10 wt% of the raw materials, and stirring for 2-4 minutes to obtain the premix. And (3) installing a mould, uniformly scattering the aggregate into the mould, pouring the premix into the mould, carrying out vibration forming, carrying out heat preservation for 12-24 hours at the temperature of 140-200 ℃, and demoulding to obtain the ladle castable for smelting the high manganese steel.
The defoaming agent is one of polyether, silicone oil composite, amine-containing and imine.
Compared with the prior art, the specific implementation mode has the following positive effects:
(1) mn adopted by the embodiment is easily oxidized into MnO from inside to outside in sequence by taking Mn as a center in the temperature rising process2、Mn3O4And MnO gradient material, and Al in refractory material at high temperature2O3∙ MgO reacts to generate spinel solid solution, which not only improves the toughness of the ladle castable for smelting high manganese steel, but also reduces the infiltration erosion of molten steel to the ladle castable for smelting high manganese steel.
(2) The monoclinic phase zirconia adopted by the embodiment undergoes phase change when being heated, generates in-situ stress with the formation of manganese-containing spinel solid solution, the superplasticity of the nano alumina promotes the formation of a micro-closed pore matrix, and the phase change of the zirconia can offset the shrinkage of the material when being cooled, so that the monoclinic phase zirconia is matched with the prefabricated microporous corundum, and the thermal shock resistance and the steel slag erosion resistance of the ladle castable for smelting high manganese steel are comprehensively improved.
(3) In addition to oxidation and solid solution formation, the Mn adopted by the embodiment can be dissolved and permeated into the molten steel directly or in the form of a manganese compound, so that the Mn content in the smelted high-manganese steel is increased, and the performance of the high-manganese steel is improved.
The detection shows that the ladle castable for smelting high manganese steel prepared by the specific embodiment is as follows: the bulk density is 2.95-3.20 g/cm3(ii) a The apparent porosity is 10.1-12.8%; the normal-temperature rupture strength (110 ℃ for 24h) is 4-9 MPa, and the normal-temperature rupture strength (1600 ℃ for 3h) is 14-22 MPa; the high-temperature rupture strength is 14-20 MPa; the normal temperature compressive strength (110 ℃ for 24h) is 35-56 MPa, and the normal temperature compressive strength (1600 ℃ for 3h) is 65-85 MPa; the linear change rate (1600 ℃ for 3h) is 0.5-2.0%; under the water cooling condition of 1100 ℃, the thermal shock frequency is more than or equal to 10 times.
Therefore, the specific embodiment has the characteristics of high strength, good thermal shock stability, excellent scouring resistance and steel slag erosion resistance and capability of improving the quality of the high manganese steel.
Claims (11)
1. The preparation method of the ladle castable for high manganese steel smelting is characterized by taking 43-68 wt% of microporous corundum particles and 10-27 wt% of magnesium aluminate spinel particles as aggregates, 5-15 wt% of microporous corundum fine powder, 2-4 wt% of magnesium aluminate spinel fine powder, 4-8 wt% of pseudo-boehmite and 2-4 wt% of rho-Al2O3Fine powder, 0.1-1 wt% of monoclinic phase zirconia fine powder and 0.1-1.5 wt% of manganese powder are used as matrixes, and the sum of the aggregates and the matrixes is used as a raw material; taking organic fibers accounting for 0.04-0.08 wt% of the raw materials, a polycarboxylic acid water reducing agent accounting for 0.1-0.5 wt%, maleic acid accounting for 0.2-0.5 wt% and a defoaming agent accounting for 0.01-0.03 wt% as additives; premixing the substrate and the additive, adding water accounting for 4-10 wt% of the raw materials, and stirring for 2-4 minutes to obtain a premix; and (3) installing a mould, uniformly scattering the aggregate into the mould, pouring the premix into the mould, carrying out vibration forming, carrying out heat preservation for 12-48 hours at the temperature of 110-200 ℃, and demoulding to obtain the ladle castable for smelting the high manganese steel.
2. The method for preparing ladle castable for smelting high manganese steel according to claim 1, wherein Al of the microporous corundum particles2O3The content is more than or equal to 99.5 wt%; the microporous corundum particles are as follows: the apparent porosity is less than or equal to 5.22 percent, the closed porosity is more than or equal to 7.5 percent, the median pore diameter is less than or equal to 0.2 mu m, and the particle diameter of the microporous corundum particles is 20-0.088 mm.
3. The method for preparing ladle castable for smelting high manganese steel according to claim 1, wherein Al of magnesia alumina spinel particles2O3The content is 70-75 wt%; the particle size of the magnesia-alumina spinel particles is 8-1 mm.
4. The method of preparing ladle castable for high manganese steel smelting according to claim l, characterised in that ZrO of said monoclinic phase zirconia fine powder2Content (wt.)>95 wt%; the particle size of the monoclinic phase zirconia fine powder is<0.088mm。
5. The method for preparing ladle castable for smelting high manganese steel according to claim l, characterized in that Al of the microporous corundum fine powder2O3The content is more than or equal to 99.5 wt%; the microporous corundum fine powder: the apparent porosity is less than or equal to 5.22 percent, the closed porosity is more than or equal to 7.5 percent, the median pore diameter is less than or equal to 0.2 mu m, and the grain diameter of the microporous corundum fine powder<0.088mm。
6. The preparation method of the ladle castable for smelting high manganese steel according to claim l, wherein Al of the magnesia alumina spinel micropowder2O3Content (wt.)>88 wt%; particle size D of magnesia-alumina spinel micropowder502 to 6 μm.
7. The method for preparing the ladle castable for smelting high manganese steel according to claim 1, wherein peptization index of the pseudoboehmite>97 wt%; particle size D of pseudo-boehmite500.2 to 5 μm.
8. The preparation method of the ladle castable for high manganese steel smelting according to claim 1, characterized in that the rho-Al is2O3Fine powder of Al2O3The content is more than or equal to 80 wt%; the rho-Al2O3Particle diameter D of fine powder501 to 5 μm.
9. The preparation method of the ladle castable for high manganese steel smelting according to claim 1, characterized in that the content of Mn in the manganese powder is more than 99.7 wt%, and the particle size of the manganese powder is 0.025-0.15 mm.
10. The method for preparing the ladle castable for smelting high manganese steel according to claim 1, wherein the defoaming agent is one of siloxane co-cluster, organosiloxane, polyether, silicone oil complex, amine-containing, imine and amide.
11. A high manganese steel smelting ladle castable, which is characterized by being prepared according to the preparation method of the high manganese steel smelting ladle castable of any one of claims 1-10.
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|---|---|---|---|---|
| CN103044044A (en) * | 2013-01-17 | 2013-04-17 | 武汉科技大学 | Lightweight aluminum oxide castable and preparation method thereof |
| CN103922774A (en) * | 2014-03-07 | 2014-07-16 | 中南大学 | Micron-sized cermet precursor granules with micro/nano structure and preparation method thereof |
| CN103979991A (en) * | 2014-06-03 | 2014-08-13 | 武汉科技大学 | Gas permeable brick for steel ladle for stainless steel smelting and preparation method thereof |
| CN104402464A (en) * | 2014-10-28 | 2015-03-11 | 宁夏天纵泓光余热发电技术有限公司 | Fireproof castable made of magnesium slag and manganese slag |
| CN107285788A (en) * | 2017-08-02 | 2017-10-24 | 嵊州市万智网络科技有限公司 | A kind of acid/alkali-corrosion-resistant castable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5678461A (en) * | 1979-11-29 | 1981-06-27 | Sumitomo Cement Co | Manufacture of highly refractory alumina cement |
-
2017
- 2017-12-29 CN CN201711487090.1A patent/CN108101562B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103044044A (en) * | 2013-01-17 | 2013-04-17 | 武汉科技大学 | Lightweight aluminum oxide castable and preparation method thereof |
| CN103922774A (en) * | 2014-03-07 | 2014-07-16 | 中南大学 | Micron-sized cermet precursor granules with micro/nano structure and preparation method thereof |
| CN103979991A (en) * | 2014-06-03 | 2014-08-13 | 武汉科技大学 | Gas permeable brick for steel ladle for stainless steel smelting and preparation method thereof |
| CN104402464A (en) * | 2014-10-28 | 2015-03-11 | 宁夏天纵泓光余热发电技术有限公司 | Fireproof castable made of magnesium slag and manganese slag |
| CN107285788A (en) * | 2017-08-02 | 2017-10-24 | 嵊州市万智网络科技有限公司 | A kind of acid/alkali-corrosion-resistant castable |
Non-Patent Citations (1)
| Title |
|---|
| 氧化锆的引入形式对刚玉-尖晶石浇注料性能的影响;时伟娜等;《轻金属》;20110630;第15-17页 * |
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