CN101085707A - Fused magnesia-aluminum spinel composite fire-resistant material and producing method thereof - Google Patents
Fused magnesia-aluminum spinel composite fire-resistant material and producing method thereof Download PDFInfo
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- CN101085707A CN101085707A CN 200710089960 CN200710089960A CN101085707A CN 101085707 A CN101085707 A CN 101085707A CN 200710089960 CN200710089960 CN 200710089960 CN 200710089960 A CN200710089960 A CN 200710089960A CN 101085707 A CN101085707 A CN 101085707A
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- aluminum
- resistant material
- aluminium
- composite fire
- fused magnesia
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Abstract
The invention relates to a method for preparing electric melted magnesium and aluminum spar complex flame- proof material. The method mixes one or two kinds of 20- 90% aluminum ash and 10- 80% magnesium carbonate and magnesium oxide, pressing them into green body, electric melting at 1800- 3000 Deg. C, cooling and getting t out; breaking, separating and getting electric melted magnesium and aluminum spar complex flame- proof material. The main chemical component in aluminum ash and their weight proportion are: Al2O3 is 10- 70%, Al is 10 -40%, MgO is 0.3- 20% and SiO2 is 0.5- 30%. The metallic aluminum and aluminum nitride in aluminum ash are main reductive agent and smelts and reduces SiO2, Fe2O3 and TiO2 and other oxides. The invention is characterized by low energy consumption, little environmental pollution and low carbon content in product.
Description
Technical field
The invention belongs to the composite refractory production technical field.Relate in particular to a kind of production method of fused magnesia-aluminum spinel composite fire-resistant material.
Background technology
All can produce a large amount of waste residues in electrolytic aluminium and aluminium, aluminum products production process, behind some metallic aluminiums that reclaim wherein, remaining residue abandons as rubbish usually, and these abandons are called aluminium slag or aluminium ash, are also referred to as aluminium slag ash.The chemical composition of aluminium ash is mainly with Al
2O
3, SiO
2, MgO, Fe
2O
3, Na
2O, CaO and metallic aluminium etc. is main, also has some nitride, chloride and sulfide etc.General SiO
25～20%, Al
2O
340～75%, the ratio of its chemical composition is different and slightly change along with the raw material of each manufacturer and operating condition.
The aluminium ash is a kind of silver gray powder, and outer appearnce is like flyash, and both contaminated environment needed again a large amount of disposal places, and the regeneration of aluminium ash mainly concentrates on following several aspect both at home and abroad at present:
(1) be used for concrete or construction material: because the aluminium ash contains metallic aluminium, the aquation of metallic aluminium produces bubble, cause innerly in concrete or the construction material producing pore, expansion so that internal structure is loose, and strength decreased, thereby aluminium ash utilization rate is not high;
(2) recovery of aluminium salt: mainly be that this method mainly reclaims the aluminium in the aluminium slag, fails to reclaim other composition in the aluminium slag, also produces a large amount of waste liquids simultaneously with aluminium slag and hydrochloric acid or sulfuric acid reaction generation aluminium salt;
(3) furnace refractory: composite desulfurizing agent is a main raw material with fluorite, lime mainly, and aluminium ash incorporation is no more than 40%, and molten iron is through the secondary desulfurization of aluminium slag sweetening agent, and manganese, silicon, carbon have burn in the molten iron;
(4) calcium aluminate product: adopt washing, evaporation, crystalline method to isolate nonmetal product, this nonmetal product mainly comprises the compound of a large amount of aluminium and the compound of a spot of siliceous and magnesium, remove metallic aluminium and aluminium nitride in the nonmetal product, add the CaO source, mix, be sintered into calcium aluminate product (USP 6,238,633).
(5) refractory materials
Adopt the aluminium ash to produce refractory material, report at present the main fused brown corundum of producing, its main process is, with Al
2O
3Through washing, oven dry adds anthracite or coke and iron filings to content, its objective is SiO greater than the ash of the aluminium more than 82%
2, Fe
2O
3, TiO
2Become metal Deng Reduction of Oxide, the metal after the reduction and iron form Antaciron and sink down into more greatly furnace bottom because of proportion, to reach pure Al
2O
3Purpose; This method is exactly method (technology that the aluminium ash is produced brown corundum, Harbin University of Science and Technology's journal, 1996,1 (2): 48-50 of the brown corundum of usually said smelting or sub-white corundum; The production method of palm fibre corundum, CN90107092.0).This method exists limitation at present: (1) needs the Al in the aluminium ash
2O
3The content height; (2) a large amount of metallic aluminium aquations in the aluminium ash after the washing cause metallic aluminium to reduce, and are unfavorable for reduction reaction; (3) carbon thermal reduction SiO
2, Fe
2O
3, TiO
2Deng oxide, compare with aluminothermic reduction, introduce easily too much carbon, the Formed compound affects the performance of final products.
Three, summary of the invention
The purpose of this invention is to provide the waste that utilizes aluminium industry that a kind of carbon content is low, power consumption is little, environmental pollution reduces---the aluminium ash is produced the method and the goods thereof of fused magnesia-aluminum spinel composite fire-resistant material.
For achieving the above object, the technical solution used in the present invention is: percentage composition mixes 20～90% aluminium ash and 10～80% magnesiumcarbonate, in the magnesium oxide one or both by weight, is pressed into base, electric smelting smelting under 1800～3000 ℃ of conditions, take out the cooling back, broken then, separation.Obtain fused magnesia-aluminum spinel composite fire-resistant material.
Wherein: the weight percentage of the main chemical compositions of aluminium ash is Al
2O
3Be 10～70%, Al is 10～40%, MgO is 0.3～20%, SiO
2Be 0.5～30%; Electric smelting is smelted or be melting or be melting in the induction furnace in the electric arc furnaces.
Owing to adopt technique scheme, it is main reducing agent that the present invention utilizes the non-oxidized substances such as metallic aluminium in the aluminium trade waste aluminium ash, aluminium nitride, the SiO in the melting and reducing aluminium ash
2, Fe
2O
3, TiO
2Deng oxide, the fused magnesia-aluminum spinel composite fire-resistant material of preparation has following characteristics:
1, the raw materials used aluminium ash of the present invention is the aluminium industrial produced wastes, can turn waste into wealth, reduce environmental pollution;
2, the present invention mainly the non-oxidized substance such as the metallic aluminium in the aluminium ash, aluminium nitride can remove the SiO in the fusion process as reducing agent
2, Fe
2O
3, TiO
2Deng oxide impurity, its product has the low advantage of carbon content;
3, reductive agent of the present invention is owing to be mainly aluminium, and therefore its thermal discharge can reduce power consumption than carbothermic reduction Gao Duode.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
A kind of fused magnesia-aluminum spinel composite fire-resistant material and production method thereof, percentage composition mixes 70～90% aluminium ash with 10～30% light-magnesite powder by weight, be pressed into base, melting in the induction furnace under 1800～2100 ℃ of conditions, take out the cooling back, broken then, separate, obtain fused magnesia-aluminum spinel composite fire-resistant material.The chemical composition of aluminium ash is: Al
2O
3Be 24.62%, Al is 29.6%, MgO is 10.7%, SiO
2Be 10.5%, Na
2O is 3.7%, CaO is 2.4%, TiO
2Be 2.0%, Fe
2O
3Be 2.2%, igloss is 12.84%, other is 1.5%.
Through the X-ray diffraction analysis, main thing is a magnesium-aluminium spinel mutually, also has a small amount of Sialon to exist mutually.Chemical analysis results is: Al
2O
3Be 74.5%, MgO is 21.6%, C is 0.03%.Volume density is 3.24g/cm
3, apparent porosity is 4.1%.
Embodiment 2
A kind of fused magnesia-aluminum spinel composite fire-resistant material and production method thereof, percentage composition mixes the grey magnesite breeze with 20～40% of 60～80% aluminium by weight, be pressed into base, melting in the electric arc furnace under 2000～2700 ℃ of conditions, take out the cooling back, broken then, separate, obtain fused magnesia-aluminum spinel composite fire-resistant material.The chemical composition of aluminium ash is: Al
2O
3Be 24.62%, A is 29.6%, MgO is 10.7%, SiO
2Be 10.5%, Na
2O is 3.7%, CaO is 2.4%, TiO
2Be 2.0%, Fe
2O
3Be 2.2%, igloss is 12.84%, other is 1.5%.
Through the X-ray diffraction analysis, main thing is magnesium-aluminium spinel mutually.Chemical analysis results is: Al
2O
3Be 76.2%, MgO is 22.3%, C is 0.04%.Volume density is 3.18g/cm
3, apparent porosity is 5.2%
Claims (4)
1, a kind of production method of fused magnesia-aluminum spinel composite fire-resistant material, it is characterized in that percentage composition by weight mixes 20～90% aluminium ash and 10～80% magnesiumcarbonate, in the magnesium oxide one or both, be pressed into base, electric smelting is smelted under 1800～3000 ℃ of conditions, take out the cooling back, broken then, separation.
2, the production method of fused magnesia-aluminum spinel composite fire-resistant material according to claim 1 is characterized in that the weight percentage of the main chemical compositions of described aluminium ash is, Al
2O
3Be 10～70%, Al is 10～40%, MgO is 0.3～20%, SiO
2Be 0.5～30%.
3, the production method of fused magnesia-aluminum spinel composite fire-resistant material according to claim 1 is characterized in that described electric smelting is smelted or for melting in the electric arc furnaces or be melting in the induction furnace.
4, the fused magnesia-aluminum spinel composite fire-resistant material of being produced according to each described fused magnesia-aluminum spinel composite fire-resistant material production method in the claim 1～3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710089960XA CN100450972C (en) | 2006-04-27 | 2006-04-27 | Fused magnesia-aluminum spinel composite fire-resistant material and producing method thereof |
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|---|---|---|---|
| CNB200710089960XA CN100450972C (en) | 2006-04-27 | 2006-04-27 | Fused magnesia-aluminum spinel composite fire-resistant material and producing method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100189502A Division CN100406411C (en) | 2006-04-27 | 2006-04-27 | A composite electro-fusing refractory material and method for preparing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101085707A true CN101085707A (en) | 2007-12-12 |
| CN100450972C CN100450972C (en) | 2009-01-14 |
Family
ID=38936906
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|---|---|---|---|
| CNB200710089960XA Expired - Fee Related CN100450972C (en) | 2006-04-27 | 2006-04-27 | Fused magnesia-aluminum spinel composite fire-resistant material and producing method thereof |
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Cited By (12)
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|---|---|---|---|---|
| CN101429581B (en) * | 2008-12-04 | 2010-06-02 | 武汉科技大学 | Method for producing ferro-silicon alloy and magnesium aluminate spinel with aluminum ash and white olivine |
| WO2012019521A1 (en) * | 2010-08-13 | 2012-02-16 | 东北大学 | Method for preparing metal magnesium and magnesium-aluminium spinel with active magnesia and aluminium or aluminium alloy as raw materials |
| CN104877399A (en) * | 2015-05-22 | 2015-09-02 | 苏州市贝克生物科技有限公司 | Cultural relics surface fire-resistant coating and preparation method of cultural relics surface fire-resistant coating |
| CN105294135A (en) * | 2015-12-04 | 2016-02-03 | 中南大学 | Method for directly preparing aluminum spinel refractory from aluminum ash and material prepared by using method |
| CN105777152A (en) * | 2016-02-29 | 2016-07-20 | 河南利刚王磨料磨具有限公司 | High-hardness painting material for heating pipeline and preparation method of material |
| CN106810278A (en) * | 2016-12-30 | 2017-06-09 | 山东立中轻合金汽车材料有限公司 | A kind of regrown material utilized based on aluminium scrap ash secondary cycle |
| CN106904957A (en) * | 2017-03-10 | 2017-06-30 | 河南特耐工程材料股份有限公司 | A kind of magnesium aluminate spinel, its preparation method and its application |
| CN107324796A (en) * | 2017-06-15 | 2017-11-07 | 西安建筑科技大学 | A kind of carbon/magnesium aluminate spinel composite powder |
| CN107382345A (en) * | 2017-08-18 | 2017-11-24 | 郑州大学 | A kind of MgO MA aggregate processing methods of micro-nano spinelle toughness reinforcing |
| CN109400122A (en) * | 2017-08-18 | 2019-03-01 | 陈圣义 | Aluminium slag ash recycling is regenerated as method of fused alumina and products thereof and application |
| CN111925204A (en) * | 2020-08-22 | 2020-11-13 | 郑州经纬科技实业有限公司 | Preparation method of magnesia-alumina spinel refractory material |
| CN111995335A (en) * | 2020-08-24 | 2020-11-27 | 郑州祥和科锐环保设备有限公司 | GRC environment-friendly box and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2561615B2 (en) * | 1993-09-30 | 1996-12-11 | 株式会社シンコーフレックス | Method for producing complex slag refiner for refining used in out-of-furnace refining |
| JP4184884B2 (en) * | 2003-07-24 | 2008-11-19 | 大同エコメット株式会社 | Steelmaking material for desulfurization and refining of steel |
-
2006
- 2006-04-27 CN CNB200710089960XA patent/CN100450972C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429581B (en) * | 2008-12-04 | 2010-06-02 | 武汉科技大学 | Method for producing ferro-silicon alloy and magnesium aluminate spinel with aluminum ash and white olivine |
| WO2012019521A1 (en) * | 2010-08-13 | 2012-02-16 | 东北大学 | Method for preparing metal magnesium and magnesium-aluminium spinel with active magnesia and aluminium or aluminium alloy as raw materials |
| CN104877399A (en) * | 2015-05-22 | 2015-09-02 | 苏州市贝克生物科技有限公司 | Cultural relics surface fire-resistant coating and preparation method of cultural relics surface fire-resistant coating |
| CN105294135A (en) * | 2015-12-04 | 2016-02-03 | 中南大学 | Method for directly preparing aluminum spinel refractory from aluminum ash and material prepared by using method |
| CN105777152B (en) * | 2016-02-29 | 2018-05-08 | 河南利刚王磨料磨具有限公司 | A kind of heat distribution pipeline applies brush material and preparation method thereof with high rigidity |
| CN105777152A (en) * | 2016-02-29 | 2016-07-20 | 河南利刚王磨料磨具有限公司 | High-hardness painting material for heating pipeline and preparation method of material |
| CN106810278A (en) * | 2016-12-30 | 2017-06-09 | 山东立中轻合金汽车材料有限公司 | A kind of regrown material utilized based on aluminium scrap ash secondary cycle |
| CN106904957A (en) * | 2017-03-10 | 2017-06-30 | 河南特耐工程材料股份有限公司 | A kind of magnesium aluminate spinel, its preparation method and its application |
| CN107324796B (en) * | 2017-06-15 | 2018-04-24 | 西安建筑科技大学 | A kind of carbon/magnesium aluminate spinel composite powder |
| CN107324796A (en) * | 2017-06-15 | 2017-11-07 | 西安建筑科技大学 | A kind of carbon/magnesium aluminate spinel composite powder |
| CN107382345A (en) * | 2017-08-18 | 2017-11-24 | 郑州大学 | A kind of MgO MA aggregate processing methods of micro-nano spinelle toughness reinforcing |
| CN109400122A (en) * | 2017-08-18 | 2019-03-01 | 陈圣义 | Aluminium slag ash recycling is regenerated as method of fused alumina and products thereof and application |
| CN107382345B (en) * | 2017-08-18 | 2020-09-01 | 郑州大学 | Preparation method of micro-nano spinel toughened MgO-MA aggregate |
| CN111925204A (en) * | 2020-08-22 | 2020-11-13 | 郑州经纬科技实业有限公司 | Preparation method of magnesia-alumina spinel refractory material |
| CN111995335A (en) * | 2020-08-24 | 2020-11-27 | 郑州祥和科锐环保设备有限公司 | GRC environment-friendly box and preparation method thereof |
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