CN101565321A - Method of producing forsterite refractory - Google Patents
Method of producing forsterite refractory Download PDFInfo
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- CN101565321A CN101565321A CNA2009101483677A CN200910148367A CN101565321A CN 101565321 A CN101565321 A CN 101565321A CN A2009101483677 A CNA2009101483677 A CN A2009101483677A CN 200910148367 A CN200910148367 A CN 200910148367A CN 101565321 A CN101565321 A CN 101565321A
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Abstract
A method for producing forsterite refractory is characterized by comprising: a. mixing the raw magnesite flotation tailing or magnesite shaft kiln dust removing powder, light burning magnesite powder and cabosil, wherein the weight ratio Mgo/SiO[2] is 1.342-1.476; b. according to the weight ratio, uniformly mixing 80-100 portions of mixed materials obtained in step a and 0-20 portions of burnable lost property, additionally with 30-70 portions of water, producing briquette; drying the briquette obtained in step b at 15-50 DEG C for 3-24 hours, drying at 110 DEG C for 12 hours, burning at the oxidative atmosphere; keeping warm at 500-650 DEG C for 2-3 hours, 1500 DEG C for 3-5 hours. The invention uses the industrial waste to produce the forsterite refractory, greatly reduces the production cost of the forsterite refractory, decreases the dust pollution and improves the ecologic environment.
Description
Technical field
The present invention relates to a kind of refractory materials production method, relate in particular to the method for producing forsterite refractory.
Background technology
The mine tailing of magnesite flotation is: after the magnesite stone ore exploitation, through processing, that carries out that flotation obtains is impure higher, particularly contains the higher ore deposit of silicon-dioxide, generally this type of mine tailing is used as refuse and throws away.
Magnesia shaft furnace dust-removing powder is: after the magnesite stone ore exploitation, in shaft furnace, be sintered into various other magnesia of level, and in calcining smoke evacuation process, contained dust in fume exhaust system.
Along with the continuous development of industry, the quantity of the mine tailing of above-mentioned magnesite flotation, magnesia shaft furnace dust-removing powder is more and more, and present processing mode is mainly stacking, not only a large amount of land occupations, and also above-mentioned substance also is easy to float aloft, causes dust pollution.
Along with the development of Iron And Steel Industry and the requirement of refining Clean Steel, the particularly alkaline light thermal insulation fire-resistant material of basic refractory becomes the refractory materials that the smelting iron and steel tooling is badly in need of.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of pollution that reduces wagnerite flotation tailings and magnesia shaft furnace dust-removing powder, produces the production method of forsterite refractory with it.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of method of producing forsterite refractory, wherein this method may further comprise the steps:
A. wagnerite flotation tailings or magnesia shaft furnace dust-removing powder and light-burning magnesium powder, ground silica are mixed into mixture, make weight ratio MgO/SiO in the mixture
2=1.342～1.476;
B. by weight than, the mixture 80-100 part of getting gained in a step can be burnt lost article 0-20 part and be mixed, and adds water 30-70 part again and mixes and make adobe;
C. with the adobe of gained among the step b under 15-50 ℃ condition dry 3-24 hour, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 2-3 hour down, again 1500 ℃ of insulations 3～5 hours down;
The method of production forsterite refractory of the present invention, wherein, in step a, by weight than, get 0～40 part of the ground silica of 10～40 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 20～60 parts of wagnerite flotation tailingss, the particle diameter≤0.074mm of particle diameter≤0.15mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
The method of production forsterite refractory of the present invention, wherein, in step a, by weight than, get 20～30 parts of the ground silicas of 20～30 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 30～50 parts of wagnerite flotation tailingss, particle diameter≤0.074mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
The method of production forsterite refractory of the present invention, wherein, in step a, by weight than, get 20～35 parts of the ground silicas of 5～40 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 20～60 parts of magnesia shaft furnace dust-removing powders, the particle diameter≤0.074mm of particle diameter≤0.5mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
The method of production forsterite refractory of the present invention, wherein, in step a, by weight than, get 20～35 parts of the ground silicas of 20～30 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 30～50 parts of magnesia shaft furnace dust-removing powders, the particle diameter≤0.074mm of particle diameter≤0.5mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
The method that any one uses wagnerite flotation tailings or magnesia shaft furnace dust-removing powder to produce forsterite refractory of the present invention, wherein, described burn in sawdust that lost article is particle diameter≤0.5mm, coal dust, coke powder or the poly-light ball a kind of, two or more.
The mine tailing of magnesite flotation: after the magnesite stone ore exploitation, through processing, that carries out that flotation obtains is impure higher, particularly contains the higher ore deposit of silicon-dioxide, generally this type of mine tailing is used as refuse and throws away, and wherein useful composition is magnesiumcarbonate and silicon-dioxide.
Magnesia shaft furnace dust-removing powder: after the magnesite stone ore exploitation, in shaft furnace, be sintered into various other magnesia of level, in the smoke evacuation process in calcination process, contained dust in fume exhaust system, wherein useful composition is magnesiumcarbonate and silicon-dioxide.
Contained magnesiumcarbonate becomes magnesium oxide and carbonic acid gas through thermal degradation in the mine tailing of magnesite flotation, the magnesia shaft furnace dust-removing powder, the magnesium oxide in the mixture further with mixture in silicon-dioxide generate Mg through reacting by heating
2SiO
4The main component of (principal crystalline phase) forsterite.In a step of the present invention, measure MgO/SiO in the mixture
2Method be, from the material that mixes, take out sample, heating is resolved into magnesium oxide and carbonic acid gas with the mine tailing of magnesite flotation, the magnesiumcarbonate in the magnesia shaft furnace dust-removing powder, at this moment, detects MgO, SiO
2, content, and calculate MgO/SiO
2
Advantage of the present invention is: wagnerite flotation tailings and magnesia shaft furnace dust-removing powder are used to make forsterite refractory, properly above-mentioned pollutent are handled, utilization of waste material reduces the pollution of above-mentioned two kinds of industrial wastes to environment; And the present invention uses industrial waste to make forsterite refractory, has greatly reduced the production cost of forsterite refractory.
Embodiment
Embodiment 1
Get 40 kilograms of the ground silicas of 40 kilograms of light-burning magnesium powders, the particle diameter≤0.074mm of 20 kilograms of wagnerite flotation tailingss, the particle diameter≤0.074mm of particle diameter≤0.15mm, in mixing machine, be mixed, survey weight ratio MgO/SiO in the mixture
2=1.126, add 9.4 kilograms of light-burning magnesium powders, survey MgO/SiO again
2=1.342, the burnt lost article sawdust that adds particle diameter≤0.5mm again mixes for 20 kilograms, adds water and mixes for 40 kilograms and make adobe.With the adobe of gained dry more than 24 hours under 15-30 ℃ the condition, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 3 hours, 1500 ℃ of insulations 3 hours down, can obtain unit weight 0.9g/cm again
3, the light thermal-insulation forsterite refractory of apparent porosity 64%.
Embodiment 2
Get 10 kilograms of the ground silicas of 30 kilograms of light-burning magnesium powders, the particle diameter≤0.074mm of 60 kilograms of wagnerite flotation tailingss, the particle diameter≤0.074mm of particle diameter≤0.15mm, in mixing machine, be mixed, survey weight ratio MgO/SiO in the mixture
2=3.213, add 10.1 kilograms of ground silicas, survey MgO/SiO again
2=1.476, the poly-light ball of burnt lost article that adds particle diameter≤0.5mm again mixes for 20 kilograms, adds water again and mixes for 35 kilograms and make adobe.With the adobe of gained dry more than 24 hours under 15-30 ℃ the condition, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 3 hours, 1500 ℃ of insulations 3 hours down, can obtain unit weight 0.78g/cm again
3, the light thermal-insulation forsterite refractory of apparent porosity 74%.
Embodiment 3
Get 35 kilograms of the ground silicas of 25 kilograms of light-burning magnesium powders, the particle diameter≤0.074mm of 40 kilograms of wagnerite flotation tailingss, the particle diameter≤0.074mm of particle diameter≤0.15mm, in mixing machine, be mixed, survey weight ratio MgO/SiO in the mixture
2=1.045, add 14.8 kilograms of light-burning magnesium powders again, survey MgO/SiO again
2=1.410,15 kilograms in the poly-light ball of burnt lost article, the coal dust that add particle diameter≤0.5mm again mix for 5 kilograms, add water again and mix for 37 kilograms and make adobe.With the adobe of gained dry more than 24 hours under 15-30 ℃ the condition, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 3 hours, 1500 ℃ of insulations 5 hours down, can obtain unit weight 0.85g/cm again
3, the light thermal-insulation forsterite refractory of apparent porosity 70%.
Embodiment 4
Get 40 kilograms of the ground silicas of 40 kilograms of light-burning magnesium powders, the particle diameter≤0.074mm of 20 kilograms of magnesia shaft furnace dust-removing powders, the particle diameter≤0.074mm of particle diameter≤0.5mm, in mixing machine, be mixed, survey weight ratio MgO/SiO in the mixture
2=1.228, add 4.8 kilograms of light-burning magnesium powders again, survey MgO/SiO again
2=1.342, the poly-light ball of burnt lost article that adds particle diameter≤0.5mm again mixes for 20 kilograms, adds water and is mixed for 34 kilograms again and makes adobe.With the adobe of gained dry more than 24 hours under 15-30 ℃ the condition, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 3 hours, again 1500 ℃ of insulations 4 hours down.Can obtain unit weight 0.82g/cm
3, the light thermal-insulation forsterite refractory of apparent porosity 73%.
Embodiment 5
Get 20 kilograms of the ground silicas of 20 kilograms of light-burning magnesium powders, the particle diameter≤0.074mm of 60 kilograms of magnesia shaft furnace dust-removing powders, the particle diameter≤0.074mm of particle diameter≤0.5mm, in mixing machine, be mixed, survey weight ratio MgO/SiO in the mixture
2=2.479, add 14.5 kilograms of ground silicas again, survey MgO/SiO again
2=1.476, the burnt lost article that adds particle diameter≤0.5mm again gathers 14 kilograms in light ball, 6 kilograms of coke powders, mixes, and adds water and is mixed for 38 kilograms again, makes adobe.With the adobe of gained dry more than 24 hours under 15-30 ℃ the condition, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 3 hours, again 1500 ℃ of insulations 3.5 hours down.Can obtain unit weight 0.86g/cm
3, the light thermal-insulation forsterite refractory of apparent porosity 70%.
Embodiment 6
Get 35 kilograms of the ground silicas of 25 kilograms of light-burning magnesium powders, the particle diameter≤0.074mm of 40 kilograms of magnesia shaft furnace dust-removing powders, the particle diameter≤0.074mm of particle diameter≤0.5mm, in mixing machine, be mixed, survey weight ratio MgO/SiO in the mixture
2=1.295, add 4.1 kilograms of light-burning magnesium powders again, survey MgO/SiO again
2=1.406, add 15 kilograms in burnt lost article sawdust, 5 kilograms of the coke powders of particle diameter≤0.5mm again, mix, add water and be mixed again for 45 kilograms, make adobe.With the adobe of gained dry more than 24 hours under 15-30 ℃ the condition, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 3 hours, again 1500 ℃ of insulations 3.8 hours down.Can obtain unit weight 0.95g/cm
3, the light thermal-insulation forsterite refractory of apparent porosity 61%.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. method of producing forsterite refractory is characterized in that this method may further comprise the steps:
A. wagnerite flotation tailings or magnesia shaft furnace dust-removing powder and light-burning magnesium powder, ground silica are mixed into mixture, weight ratio MgO/SiO in the mixture
2=1.342～1.476;
B. by weight than, the mixture 80-100 part of getting gained in a step can be burnt lost article 0-20 part and be mixed, and adds water 30-70 part again and mixes and make adobe;
C. with the adobe of gained among the step b under 15-50 ℃ condition dry 3-24 hour, then 110 ℃ dry 12 hours down, under oxidizing atmosphere, carry out sintering, earlier 500 ℃～650 ℃ insulations 2-3 hour down, again 1500 ℃ of insulations 3～5 hours down.
2, produce the method for forsterite refractory according to claim 1, it is characterized in that, in step a, by weight than, get 0～40 part of the ground silica of 10～40 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 20～60 parts of wagnerite flotation tailingss, the particle diameter≤0.074mm of particle diameter≤0.15mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
3, produce the method for forsterite refractory according to claim 1, it is characterized in that, in step a, by weight than, get 20～30 parts of the ground silicas of 20～30 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 30～50 parts of wagnerite flotation tailingss, particle diameter≤0.074mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
4, produce the method for forsterite refractory according to claim 1, it is characterized in that, in step a, by weight than, get 20～35 parts of the ground silicas of 5～40 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 20～60 parts of magnesia shaft furnace dust-removing powders, the particle diameter≤0.074mm of particle diameter≤0.5mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
5, produce the method for forsterite refractory according to claim 1, it is characterized in that, in step a, by weight than, get 20～35 parts of the ground silicas of 20～30 parts of light-burning magnesium powders, the particle diameter≤0.074mm of 30～50 parts of magnesia shaft furnace dust-removing powders, the particle diameter≤0.074mm of particle diameter≤0.5mm, make mixture, MgO/SiO in this mixture of sampling and measuring
2, this ratio exceeds at 1.342～1.476 o'clock, makes MgO/SiO by adding light-burning magnesium powder or ground silica
2=1.342～1.476.
6, produce the method for forsterite refractory as described any one of claim 1 to 5, it is characterized in that, described a kind of or its combination of burning in sawdust, coal dust, coke powder or the poly-light ball that lost article is particle diameter≤0.5mm.
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| CN2009101483677A CN101565321B (en) | 2009-06-16 | 2009-06-16 | Method of producing forsterite refractory |
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| CN2009101483677A CN101565321B (en) | 2009-06-16 | 2009-06-16 | Method of producing forsterite refractory |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295293A (en) * | 2011-06-14 | 2011-12-28 | 辽宁科技大学 | Method for synthesizing high purity forsterite with mine tailings of magnesite and talcum |
| CN102633515A (en) * | 2012-05-15 | 2012-08-15 | 辽宁富城特种耐火材料有限公司 | Magnesium-forsterite synthetic sand and preparation method thereof |
| CN102795870A (en) * | 2012-09-10 | 2012-11-28 | 武汉科技大学 | Light-weight magnesia brick and preparation method thereof |
| CN104326754A (en) * | 2014-09-09 | 2015-02-04 | 长兴嘉诚耐火材料有限公司 | High silicon and magnesium refractory brick and making method thereof |
| CN104326753A (en) * | 2014-09-09 | 2015-02-04 | 长兴嘉诚耐火材料有限公司 | Composite magnorite and making method thereof |
| CN104446534A (en) * | 2014-11-03 | 2015-03-25 | 海城华宇耐火材料有限公司 | Method for preparing nickel-iron electric furnace bottom material by utilizing magnesite flotation tailing |
| CN104725057A (en) * | 2015-03-10 | 2015-06-24 | 河南瑞泰耐火材料科技有限公司 | Medium-density forsterite sand and preparation method thereof |
| CN106747594A (en) * | 2016-11-24 | 2017-05-31 | 通达耐火技术股份有限公司 | A kind of preparation method of light microporous magnesia raw material |
| CN107188585A (en) * | 2017-07-19 | 2017-09-22 | 合肥铭佑高温技术有限公司 | A kind of preparation method for saving composite refractory |
| CN108358621A (en) * | 2018-03-02 | 2018-08-03 | 合肥铭佑高温技术有限公司 | A method of producing forsterite refractory |
| CN111170749A (en) * | 2020-01-16 | 2020-05-19 | 海城市中昊镁业有限公司 | Method for preparing fused forsterite by utilizing magnesite tailings through electric melting |
| CN112321290A (en) * | 2020-12-01 | 2021-02-05 | 牟春树 | Method for producing sintered forsterite |
| CN112624749A (en) * | 2020-12-03 | 2021-04-09 | 海城市中兴镁质合成材料有限公司 | Low-cost tundish dry material and preparation method thereof |
| CN112777980A (en) * | 2021-01-08 | 2021-05-11 | 湖北工业大学 | Preparation method of waste glass fire-resistant high-strength concrete |
| CN116082023A (en) * | 2023-01-04 | 2023-05-09 | 东北大学 | Method for preparing porous magnesia-based high-temperature ceramic by cooperatively utilizing magnesite tailings and magnesia waste |
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| CN101328070B (en) * | 2008-07-10 | 2011-03-23 | 武汉科技大学 | Forsterite-C-contained MgO-SiC-C fire-resistant material and preparation thereof |
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2009
- 2009-06-16 CN CN2009101483677A patent/CN101565321B/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295293A (en) * | 2011-06-14 | 2011-12-28 | 辽宁科技大学 | Method for synthesizing high purity forsterite with mine tailings of magnesite and talcum |
| CN102633515A (en) * | 2012-05-15 | 2012-08-15 | 辽宁富城特种耐火材料有限公司 | Magnesium-forsterite synthetic sand and preparation method thereof |
| CN102633515B (en) * | 2012-05-15 | 2013-06-26 | 辽宁富城特种耐火材料有限公司 | Magnesium-forsterite synthetic sand and preparation method thereof |
| CN102795870A (en) * | 2012-09-10 | 2012-11-28 | 武汉科技大学 | Light-weight magnesia brick and preparation method thereof |
| CN102795870B (en) * | 2012-09-10 | 2013-09-11 | 武汉科技大学 | Light-weight magnesia brick and preparation method thereof |
| CN104326754A (en) * | 2014-09-09 | 2015-02-04 | 长兴嘉诚耐火材料有限公司 | High silicon and magnesium refractory brick and making method thereof |
| CN104326753A (en) * | 2014-09-09 | 2015-02-04 | 长兴嘉诚耐火材料有限公司 | Composite magnorite and making method thereof |
| CN104446534B (en) * | 2014-11-03 | 2017-01-11 | 海城华宇耐火材料有限公司 | Method for preparing nickel-iron electric furnace bottom material by utilizing magnesite flotation tailing |
| CN104446534A (en) * | 2014-11-03 | 2015-03-25 | 海城华宇耐火材料有限公司 | Method for preparing nickel-iron electric furnace bottom material by utilizing magnesite flotation tailing |
| CN104725057A (en) * | 2015-03-10 | 2015-06-24 | 河南瑞泰耐火材料科技有限公司 | Medium-density forsterite sand and preparation method thereof |
| CN106747594A (en) * | 2016-11-24 | 2017-05-31 | 通达耐火技术股份有限公司 | A kind of preparation method of light microporous magnesia raw material |
| CN107188585A (en) * | 2017-07-19 | 2017-09-22 | 合肥铭佑高温技术有限公司 | A kind of preparation method for saving composite refractory |
| CN108358621A (en) * | 2018-03-02 | 2018-08-03 | 合肥铭佑高温技术有限公司 | A method of producing forsterite refractory |
| CN111170749A (en) * | 2020-01-16 | 2020-05-19 | 海城市中昊镁业有限公司 | Method for preparing fused forsterite by utilizing magnesite tailings through electric melting |
| CN111170749B (en) * | 2020-01-16 | 2022-06-07 | 海城市中昊镁业有限公司 | Method for preparing fused forsterite by utilizing magnesite tailings through electric melting |
| CN112321290A (en) * | 2020-12-01 | 2021-02-05 | 牟春树 | Method for producing sintered forsterite |
| CN112624749A (en) * | 2020-12-03 | 2021-04-09 | 海城市中兴镁质合成材料有限公司 | Low-cost tundish dry material and preparation method thereof |
| CN112777980A (en) * | 2021-01-08 | 2021-05-11 | 湖北工业大学 | Preparation method of waste glass fire-resistant high-strength concrete |
| CN116082023A (en) * | 2023-01-04 | 2023-05-09 | 东北大学 | Method for preparing porous magnesia-based high-temperature ceramic by cooperatively utilizing magnesite tailings and magnesia waste |
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