CN105461335A - Preparation method of refractory material made of periclase with ferrosilicon added - Google Patents
Preparation method of refractory material made of periclase with ferrosilicon added Download PDFInfo
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- CN105461335A CN105461335A CN201610009239.4A CN201610009239A CN105461335A CN 105461335 A CN105461335 A CN 105461335A CN 201610009239 A CN201610009239 A CN 201610009239A CN 105461335 A CN105461335 A CN 105461335A
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- ferro
- silicon
- fine powder
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Classifications
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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
- C04B2235/3205—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
- C04B2235/40—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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
Abstract
The invention belongs to the field of inorganic non-metallic materials and relates to a preparation method of a refractory material used in steel and non-ferrous metal metallurgy as well as a high temperature transitional zone and a firing zone of a cement kiln rotary kiln. The method comprises the steps of adopting 80-97% of fused magnesite particles and corresponding 3-20% of ferrosilicon fine powder as raw materials, adopting 3-5% of sodium tripolyphosphate or sodium hexametaphosphate as a binding agent, mixing the raw materials, then conducting mixing, and conducting compression formation at the pressure of 20-60 MPa; treating a sample obtained after compression formation for 8-16 hours at the temperature of 150-350 DEG C, and then conducting natural cooling, so that the refractory material made of periclase with the ferrosilicon added can be obtained. The method is simple in operation process, no complex equipment is needed, cost is low, raw materials are easy to obtain, environmental pollution caused by the production process is small, and industrialization popularization is facilitated.
Description
Technical field
The invention belongs to field of inorganic nonmetallic material, relate to iron and steel, non-ferrous metal metallurgy and the high temperature transitional zone of cement rotary kiln and the preparation method of clinkering zone refractory materials, concrete a kind of periclasite fire resistant materials preparation method adding ferro-silicon.
Background technology
China's magnesite resource enriches, and of high grade, reserves account for 25% of the world.In conventional refractory oxide, magnesian fusing point is the highest, reach 2800 DEG C, and magnesium oxide can react with composition in many conventional oxide compounds or slag and forms dystectic compound and sosoloid, the temperature of the low eutectic point of the two component system formed with some oxide compounds is also very high, so magnesia material is widely used in high temperature industry.Current magnesium oxide goods comprise: common magnesia brick, directly in conjunction with magnesia brick, magnesia-calcium brick, magnesium silica brick, magnesia alumina brick, magnesia chrome brick, magnesia carbon brick, do not burn magnesian product, indefinite form magnesian product.
At fire resisting material field, because pure zirconia magnesium brick thermal expansivity is large, heat-shock resistance is poor, and slag easily infiltrates in brick very dark, heat resistanceheat resistant peel off and structure spalling bad, and easily water suction humidifies, now except in the High Temperature Furnaces Heating Apparatus that the continous way more stable in some temperature is produced, still part uses, along with smelting iron and steel, the development of nonferrous smelting and cement kiln, the refractory materials used mostly is magnesia composite refractory, as magnesia chrome brick, magnesia-calcium brick, Mg-Al spinel brick, magnesia carbon brick, magnesia-calcium-carbon brick, magnesium zirconia block, and magnesia calcium zirconium brick etc.
But magnesia chrome brick in use can produce hexavalent chromium polluted environment.Magnesia-calcium brick needs to accomplish water-tight in production and transportation.Mg-Al spinel brick resistance to acid slag, anti-slag penetration are bad, and in brick aluminum oxide easily and in slag calcium oxide form the calcium aluminate of low melting point.The cost of magnesium zirconium class matter brick is high, and sintering temperature is high, and energy consumption is larger.
Ferrosilicon is the iron alloy that iron and silicon combine, and ferrosilicon is with coke, steel cuttings, quartz (or silica) for raw material, and with the iron silicon alloy that electrosmelting is obtained, current ferro-silicon realizes industrial development.Add ferro-silicon in periclasite and apply to high temperature industry, such as make steel temperature more than 1500 DEG C, and when being less than 1500 DEG C, ferro-silicon reaction in－situ generates dystectic 2MgOSiO
2and MgO-Fe
2o
3spinel solid solution, and the generation of the latter eliminates the harm of ferric metasilicate liquid phase.Generation in conjunction with phase Spinel makes the thermal shock resistance of magnesite refractory increase mutually, and linear expansivity reduces and slag resistance strengthens.
The present invention adopts electrosmelted magnesite clinker particle, and ferro-silicon fine powder, as raw material, adds tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 is bonding agent, and be pressed into adobe after mixing, subzero treatment obtains a kind of periclasite fire resistant materials adding ferro-silicon.The method operating procedure is simple, without the need to the equipment of complexity, and with low cost, be easy to get, production process environmental pollution is little, and save energy is easy to industrialization promotion.
Summary of the invention
Complicated for existing magnesium oxide composite refractory technical process, cost is higher, work-ing life is shorter, the problem that the scope of application is narrower, the invention provides and a kind ofly can be used for the preparation method that iron and steel, non-ferrous metal metallurgy and the high temperature transitional zone of cement rotary kiln and a kind of of clinkering zone add the magnesia brick of ferro-silicon.Compared with magnesium oxide composite refractory, its art breading is simple, cost is lower, and add the magnesia brick base portion in-situ preparation of ferro-silicon forsterite and magnesium ferrite Spinel, their generation makes internal structure finer and close, has good hot strength, especially excellent heat-resistant knocking stability and anti-slag erosion resistance, make performance more excellent, range of application is more extensive.
Add a periclasite fire resistant materials preparation method for ferro-silicon, it is characterized in that: described material adopts electrosmelted magnesite clinker particle, ferro-silicon fine powder adds bonding agent subzero treatment as raw material and forms; Concrete preparation method gets massfraction 80-97% electrosmelted magnesite clinker particle, and the ferro-silicon fine powder of 3-20% is as raw material, and the bonding agent of the 3-5% of additional raw material total amount, carries out mixing after being mixed by raw material, and compression moulding under 20-60MPa; By the sample after compression moulding in 150-350 DEG C of subzero treatment 8-16 hour; In hot industry use procedure, ferro-silicon fine powder and electrosmelted magnesite clinker fine powder in-situ preparation pleonast(e) and forsterite, final obtained material internal structure is the integrated structure forming pleonast(e) and forsterite matrix and electrosmelted magnesite clinker particle.
Wherein electrosmelted magnesite clinker purity >=95%, grating has respectively: 5->=3mm, 3->=1mm, 1-> 0.088mm and≤0.088mm, respectively its massfraction corresponding: 10-20%, 20-40%, 20-40% and 10-30%.
Iron silicon alloy is present in matrix with the fine powder of≤0.088mm.
Bonding agent is one or both in tripoly phosphate sodium STPP and Sodium hexametaphosphate 99.
Basic conception of the present invention take electrosmelted magnesite clinker as particle, and adding ferro-silicon fine powder is raw material, adds tripoly phosphate sodium STPP or Sodium hexametaphosphate 99 is bonding agent, subzero treatment after compacting.The present invention breaches all limitations of magnesium oxide composite refractory, does not need sintering thermal treatment and raw material is cheaply easy to get, and technique is simply easier to realize the periclasite fire resistant materials that ferro-silicon is added in industry preparation.
The present invention adopts electrosmelted magnesite clinker particle, and ferro-silicon fine powder, as raw material, adds bonding agent compression moulding after mixing, prepares the periclasite fire resistant materials adding ferro-silicon after subzero treatment.Raw material cheap and simple of the present invention is easy to get, and preparation method is without the need to high temperature sintering, and production technique is simple, is easy to industrial production, great save energy and production cost.
Embodiment
1 electrosmelted magnesite clinker choosing purity >=95%, choosing grain composition is respectively: 5-3mm, 3-1mm, 1-0.088mm and≤0.088mm, its massfraction corresponding: 10-20%, 20-40%, 20-40% and 10-30%.
2 get the electrosmelted magnesite clinker particle of 80-97% by massfraction, and the ferro-silicon fine powder of corresponding 3-20% is as raw material, and the tripoly phosphate sodium STPP of employing 3-5% or Sodium hexametaphosphate 99, as bonding agent, carry out mixing after being mixed by raw material, and compression moulding under 20-60MPa.Sample after compression moulding is put into drying kiln, and after carrying out 8-16h at 150-350 DEG C, naturally cooling can obtain the periclasite fire resistant materials adding ferro-silicon.
Example 1
1 electrosmelted magnesite clinker choosing purity >=95%, choosing grain composition is respectively: 5-3mm, 3-1mm, 1-0.088mm and≤0.088mm, its massfraction corresponding: 10-20%, 20-40%, 20-40% and 10-30%.
2 get the electrosmelted magnesite clinker particle of 90% by massfraction, and the ferro-silicon fine powder of corresponding 10% is as raw material, and the tripoly phosphate sodium STPP of employing 4% or Sodium hexametaphosphate 99, as bonding agent, carry out mixing after being mixed by raw material, and compression moulding under 40MPa.Sample after compression moulding is put into drying kiln, and after carrying out 12h at 300 DEG C, naturally cooling can obtain the periclasite fire resistant materials adding ferro-silicon.
Example 2
1 electrosmelted magnesite clinker choosing purity >=95%, choosing grain composition is respectively: 5-3mm, 3-1mm, 1-0.088mm and≤0.088mm, its massfraction corresponding: 10-20%, 20-40%, 20-40% and 10-30%.
2 get the electrosmelted magnesite clinker particle of 85% by massfraction, and the ferro-silicon fine powder of corresponding 15% is as raw material, and the tripoly phosphate sodium STPP of employing 5% or Sodium hexametaphosphate 99, as bonding agent, carry out mixing after being mixed by raw material, and compression moulding under 30MPa.Sample after compression moulding is put into drying kiln, and after carrying out 12h at 300 DEG C, naturally cooling can obtain the periclasite fire resistant materials adding ferro-silicon.
Example 3:
1 electrosmelted magnesite clinker choosing purity >=95%, choosing grain composition is respectively: 5-3mm, 3-1mm, 1-0.088mm and≤0.088mm, its massfraction corresponding: 10-20%, 20-40%, 20-40% and 10-30%.
2 get the electrosmelted magnesite clinker particle of 80% by massfraction, and the ferro-silicon fine powder of corresponding 20% is as raw material, and the tripoly phosphate sodium STPP of employing 5% or Sodium hexametaphosphate 99, as bonding agent, carry out mixing after being mixed by raw material, and compression moulding under 50MPa.Sample after compression moulding is put into drying kiln, and after carrying out 12h at 300 DEG C, naturally cooling can obtain the periclasite fire resistant materials adding ferro-silicon.
Claims (4)
1. add a periclasite fire resistant materials preparation method for ferro-silicon, it is characterized in that: described material adopts electrosmelted magnesite clinker particle, ferro-silicon fine powder adds bonding agent subzero treatment as raw material and forms; Concrete preparation method gets massfraction 80-97% electrosmelted magnesite clinker particle, and the ferro-silicon fine powder of 3-20% is as raw material, and the bonding agent of the 3-5% of additional raw material total amount, carries out mixing after being mixed by raw material, and compression moulding under 20-60MPa; By the sample after compression moulding in 150-350 DEG C of subzero treatment 8-16 hour; In hot industry use procedure, ferro-silicon fine powder and electrosmelted magnesite clinker fine powder in-situ preparation pleonast(e) and forsterite, final obtained material internal structure is the integrated structure forming pleonast(e) and forsterite matrix and electrosmelted magnesite clinker particle.
2. a kind of periclasite fire resistant materials preparation method adding ferro-silicon according to claim 1, it is characterized in that: electrosmelted magnesite clinker purity >=95%, grating has respectively: 5->=3mm, 3->=1mm, 1-> 0.088mm and≤0.088mm, respectively its massfraction corresponding: 10-20%, 20-40%, 20-40% and 10-30%.
3. a kind of periclasite fire resistant materials preparation method adding ferro-silicon according to claim 1, is characterized in that: iron silicon alloy is present in matrix with the fine powder of≤0.088mm.
4. a kind of periclasite fire resistant materials preparation method adding ferro-silicon according to claim 1, is characterized in that: bonding agent is one or both in tripoly phosphate sodium STPP and Sodium hexametaphosphate 99.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009239.4A CN105461335A (en) | 2016-01-07 | 2016-01-07 | Preparation method of refractory material made of periclase with ferrosilicon added |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009239.4A CN105461335A (en) | 2016-01-07 | 2016-01-07 | Preparation method of refractory material made of periclase with ferrosilicon added |
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| CN105461335A true CN105461335A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610009239.4A Pending CN105461335A (en) | 2016-01-07 | 2016-01-07 | Preparation method of refractory material made of periclase with ferrosilicon added |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062293A1 (en) * | 2020-09-22 | 2022-03-31 | 武汉科技大学 | High-performance energy-saving magnesium-based raw material and preparation method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913893A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Hot patching material for large face of converter |
| CN104177102A (en) * | 2014-08-28 | 2014-12-03 | 洛阳利尔耐火材料有限公司 | Furnace bottom ramming material of RH refining furnace |
-
2016
- 2016-01-07 CN CN201610009239.4A patent/CN105461335A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913893A (en) * | 2010-09-07 | 2010-12-15 | 河北理工大学 | Hot patching material for large face of converter |
| CN104177102A (en) * | 2014-08-28 | 2014-12-03 | 洛阳利尔耐火材料有限公司 | Furnace bottom ramming material of RH refining furnace |
Non-Patent Citations (1)
| Title |
|---|
| 国家经济委员会节约能源办公室: "《节能科技成果选集》", 31 January 1984, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062293A1 (en) * | 2020-09-22 | 2022-03-31 | 武汉科技大学 | High-performance energy-saving magnesium-based raw material and preparation method therefor |
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Application publication date: 20160406 |
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