CN102115333A - Low-cost magnesia-based castable and preparation method thereof - Google Patents
Low-cost magnesia-based castable and preparation method thereof Download PDFInfo
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- CN102115333A CN102115333A CN2009102489971A CN200910248997A CN102115333A CN 102115333 A CN102115333 A CN 102115333A CN 2009102489971 A CN2009102489971 A CN 2009102489971A CN 200910248997 A CN200910248997 A CN 200910248997A CN 102115333 A CN102115333 A CN 102115333A
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Abstract
The invention relates to the field of regeneration and utilization of waste refractory materials, in particular to a low-cost magnesia-based castable and a preparation method thereof. The low-cost magnesia-based castable is characterized by being formed by using a waste refractory material as raw material and mixing the following components in part by weight: 80 to 95 parts of waste refractory material, 3 to 12 parts of bonding agent, 0.1 to 3 parts of dispersing agent and water in an amount which is 4 to 10 percent based on the weight of the total parts. The dispersing agent is one or two of sodium tripolyphosphate and sodium hexametaphosphate. The waste refractory material is waste chrome bricks or waste magnesia bricks. Micropowder adopted is one or two of silica micropowder and alumina micropowder. The preparation method comprises: mixing the raw materials, adding water while stirring and uniformly mixing. The castable and the preparation method have the advantages of reducing production cost of various refractory material prefabticated members for tundish required for producing steel, increasing economic benefit of steel enterprises, reducing consumption of mineral resources and realizing sustained development.
Description
Technical field
The present invention relates to the regeneration of waste and old refractory materials and utilize the field, relate in particular to magnesia mould material of a kind of low cost and manufacture method thereof.
Background technology
An indispensable part during refractory materials is produced as iron and steel enterprise, its consumption what and cost just influence the economic benefit of iron and steel enterprise.Be accompanied by China's continuous increase of iron and steel output in recent years, the usage quantity of refractory materials is also in continuous rising, and this has not only increased the production cost of iron and steel, has also caused the mass consumption of national resources.Converter in use need be repaired, and in recent years, the research of domestic converter repair technology and raw material had also obtained significant progress, but the consumption of repair material is big, the cost height, also affect always iron and steel enterprise production cost.Tundish mostly is disposable use with the prefabricated component refractory materials, and the height of its cost directly influences the unit cost of Iron and Steel Production, for the regeneration and the utilization of refractory materials, is used for tundish and still belongs to blank at home with prefabricated component.
Summary of the invention
The object of the present invention is to provide magnesia mould material of a kind of low cost and manufacture method thereof, make waste and old refractory materialss a large amount of in the production obtain regeneration and utilize, reduce tundish prefabricated component cost.
For solving the problems of the technologies described above, the present invention realizes by the following technical solutions:
The magnesia mould material of a kind of low cost is characterized in that, is raw material with waste and old refractory materials, mixes with following several components, and ratio content is as follows by weight for its each component:
80～95 parts in waste and old refractory materials;
3～12 parts of wedding agent micro mists;
0.1～3 part of dispersion agent;
4%～10% of the total umber weight percent of stating waterborne.
Above-mentioned dispersion agent is one or both among tripoly phosphate sodium STPP and the Sodium hexametaphosphate 99.
Described waste and old refractory materials is meant waste and old magnesia chrome brick or waste and old magnesia brick.
Described waste and old refractory materials is divided into five kinds of different grain sizes, by weight than, wherein the 5-15mm macrobead is 15～25 parts; Particle is 10～25 parts among the 3-5mm; 10～25 parts of 1-3mm fine particles; 5～15 parts of 0-1mm fine particles; 20～35 parts of≤0.088mm powders.
Described micro mist is one or both among silicon powder and the alumina powder.
The manufacture method of the above-mentioned magnesia mould material of a kind of low cost is characterized in that, comprises following step:
1) elder generation removes surperficial residual iron, residual steel and metamorphic layer part with waste and old refractory materials after reclaiming classification, selection;
2) the waste and old refractory materials after will clearing up is broken into macrobead, middle particle, fine particle and fine particle, and a part is wherein pulverized, and is divided into 5-15mm, 3-5mm, 1-3mm, 0-1mm and less than the raw material of five kinds of different-grain diameters of 0.088mm;
3) the waste and old refractory materials of five kinds of different-grain diameters and wedding agent and dispersion agent are mixed in proportion, 4%～10% of the above-mentioned total umber weight percent of adding water in the whipping process, total churning time is 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
Compared with prior art, the invention has the beneficial effects as follows: reduce the production cost of the required tundish of Iron and Steel Production, increase steel enterprise economic benefit with various refractory materials prefabricated components; Reduce the consumption of Mineral resources, energy-conserving and environment-protective realize Sustainable development.
Embodiment
The present invention will be further described below in conjunction with embodiment:
Embodiment 1
The magnesia mould material of a kind of low cost, by following material by weight than making:
15 parts of waste and old refractory materials 5-15mm macrobeads; Particle is 20 parts among the waste and old refractory materials 3-5mm; 18 parts of waste and old refractory materials 1-3mm fine particles; 12 parts of waste and old refractory materials 0-1mm fine particles; 30 parts in waste and old refractory materials≤0.088mm powder, 4 parts of silicon powders; 1 part of tripoly phosphate sodium STPP.
The above-mentioned waste and old refractory materials of each granularity, silicon powder and tripoly phosphate sodium STPP are added in the stirrer according to described weight part ratio, mix to evenly, then with in 6 parts of adding stirrers of water, continue to stir, total churning time 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
Embodiment 2
The magnesia mould material of a kind of low cost, by following material by weight than making:
25 parts of waste and old refractory materials 5-15mm macrobeads; Particle is 16 parts among the waste and old refractory materials 3-5mm; 15 parts of waste and old refractory materials 1-3mm fine particles; 10 parts of waste and old refractory materials 0-1mm fine particles; 25 parts in waste and old refractory materials≤0.088mm powder, 8 parts of alumina powders; 1 part in tri-polyphosphate sodium.
The above-mentioned waste and old refractory materials of each granularity, alumina powder and tripoly phosphate sodium STPP are added in the stirrer according to described weight part ratio, mix to evenly, then with in 7 parts of adding stirrers of water, continue to stir, total churning time 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
Embodiment 3
The magnesia mould material of a kind of low cost, by following material by weight than making:
20 parts of waste and old refractory materials 5-15mm macrobeads; Particle is 20 parts among the waste and old refractory materials mm; 15 parts of waste and old refractory materials 1-3mm fine particles; 5 parts of waste and old refractory materials 0-1mm fine particles; 30 parts in waste and old refractory materials≤0.088mm powder, 3 parts of silicon powders, 6 parts of alumina powders; 1 part of Sodium hexametaphosphate 99.
The above-mentioned waste and old refractory materials of each granularity, silicon powder, alumina powder and Sodium hexametaphosphate 99 are added in the stirrer according to described weight part ratio, mix to evenly, then with in 5 parts of adding stirrers of water, continue to stir, total churning time 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
Embodiment 4
The magnesia mould material of a kind of low cost, by following material by weight than making:
20 parts of waste and old refractory materials 5-15mm macrobeads; Particle is 20 parts among the waste and old refractory materials 3-5mm; 15 parts of waste and old refractory materials 1-3mm fine particles; 5 parts of waste and old refractory materials 0-1mm fine particles; 30 parts in waste and old refractory materials≤0.088mm powder, 5 parts of alumina powders; 3 parts of tripoly phosphate sodium STPPs.
The above-mentioned waste and old refractory materials of each granularity, alumina powder and tripoly phosphate sodium STPP are added in the stirrer according to described weight part ratio, mix to evenly, then with in 7 parts of adding stirrers of water, continue to stir, total churning time 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
Embodiment 5
The magnesia mould material of a kind of low cost, by following material by weight than making:
25 parts of waste and old refractory materials 5-15mm macrobeads; Particle is 18 parts among the waste and old refractory materials 3-5mm; 15 parts of waste and old refractory materials 1-3mm fine particles; 8 parts of waste and old refractory materials 0-1mm fine particles; 25 parts in waste and old refractory materials≤0.088mm powder, 8 parts of silicon powders; 1 part of tripoly phosphate sodium STPP.
The above-mentioned waste and old refractory materials of each granularity, silicon powder and tripoly phosphate sodium STPP are added in the stirrer according to described weight part ratio, mix to evenly, then with in 5 parts of adding stirrers of water, continue to stir, total churning time 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
Embodiment 6
The magnesia mould material of a kind of low cost, by following material by weight than making:
15 parts of waste and old refractory materials 5-15mm macrobeads; Particle is 22 parts among the waste and old refractory materials 3-5mm; 18 parts of waste and old refractory materials 1-3mm fine particles; 10 parts of waste and old refractory materials 0-1mm fine particles; 25 parts in waste and old refractory materials≤0.088mm powder, 8 parts of alumina powders; 0.5 part of tripoly phosphate sodium STPP, 0.5 part of Sodium hexametaphosphate 99.
With the above-mentioned waste and old refractory materials of each granularity, alumina powder and tripoly phosphate sodium STPP, Sodium hexametaphosphate 99 adds in the stirrer according to described weight part ratio, mix to evenly, then with in 7 parts of adding stirrers of water, continue to stir, total churning time 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
Waste and old refractory materials in producing in the foregoing description needs to remove residual iron, residual steel and the metamorphic layer part on surface after reclaiming classification, selection, waste and old refractory materials after the cleaning is broken into macrobead, middle particle, fine particle and fine particle, and a part of inciting somebody to action is wherein pulverized, granularity is divided into 5-15mm, 3-5mm, 1-3mm, 0-1mm reach the raw material less than five kinds of different sizes of 0.088mm, for batching.
Claims (5)
1. the magnesia mould material of low cost is characterized in that, is raw material with waste and old refractory materials, mixes with following several components, and ratio content is as follows by weight for its each component:
80～95 parts in waste and old refractory materials;
3～12 parts of wedding agent micro mists;
0.1～3 part of dispersion agent;
4%～10% of the total umber weight percent of stating waterborne.
Above-mentioned dispersion agent is one or both among tripoly phosphate sodium STPP and the Sodium hexametaphosphate 99.
2. the magnesia mould material of a kind of low cost according to claim 1 is characterized in that described waste and old refractory materials is meant waste and old magnesia chrome brick or waste and old magnesia brick.
3. the magnesia mould material of a kind of low cost according to claim 1 and 2 is characterized in that described waste and old refractory materials is divided into five kinds of different grain sizes, by weight than, wherein the 5-15mm macrobead is 15～25 parts; Particle is 10～25 parts among the 3-5mm; 10～25 parts of 1-3mm fine particles; 5～15 parts of 0-1mm fine particles; 20～35 parts of≤0.088mm powders.
4. the magnesia mould material of a kind of low cost according to claim 1 is characterized in that, described micro mist is one or both among silicon powder and the alumina powder.
5. the manufacture method of the magnesia mould material of the described a kind of low cost of claim 1 is characterized in that, comprises following step:
1) elder generation removes surperficial residual iron, residual steel and metamorphic layer part with waste and old refractory materials after reclaiming classification, selection;
2) the waste and old refractory materials after will clearing up is broken into macrobead, middle particle, fine particle and fine particle, and a part is wherein pulverized, and is divided into 5-15mm, 3-5mm, 1-3mm, 0-1mm and less than the raw material of five kinds of different-grain diameters of 0.088mm;
3) the waste and old refractory materials of five kinds of different-grain diameters and wedding agent and dispersion agent are mixed in proportion, 4%～10% of the above-mentioned total umber weight percent of adding water in the whipping process, total churning time is 3-15 minute, can be cast in vibratory compaction in the prefabricated component mould of designated shape.
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| CN2009102489971A CN102115333A (en) | 2009-12-31 | 2009-12-31 | Low-cost magnesia-based castable and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336539A (en) * | 2011-09-02 | 2012-02-01 | 浙江铭德新材科技有限公司 | Waste utilization regeneration baking-free magnesia chrome brick and preparation method thereof |
| CN102617167A (en) * | 2012-03-31 | 2012-08-01 | 通化市五一环保科技股份有限公司 | Regeneration refractory castable taking used unshaped refractories as main materials |
| CN102964137A (en) * | 2012-12-04 | 2013-03-13 | 武汉钢铁(集团)公司 | Low-silicon regeneration magnesium-chrome ramming material for RH refining furnace and preparation method thereof |
| CN103114178A (en) * | 2013-03-06 | 2013-05-22 | 攀钢集团攀枝花钢铁研究院有限公司 | RH refining furnace, insertion tube thereof and preparation method |
| CN106905929A (en) * | 2017-03-22 | 2017-06-30 | 辽宁中镁控股股份有限公司 | A kind of solid heat storage material and preparation method and application |
| CN114180940A (en) * | 2021-12-21 | 2022-03-15 | 武连明 | High-strength magnesium castable and application thereof |
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| CN101139208A (en) * | 2006-09-05 | 2008-03-12 | 宝山钢铁股份有限公司 | Low-cost fire-resistant pouring material and method for making same |
| CN101555154A (en) * | 2009-05-27 | 2009-10-14 | 攀枝花学院 | Shock-resistant ladle bottom casting material |
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| CN101139208A (en) * | 2006-09-05 | 2008-03-12 | 宝山钢铁股份有限公司 | Low-cost fire-resistant pouring material and method for making same |
| CN101555154A (en) * | 2009-05-27 | 2009-10-14 | 攀枝花学院 | Shock-resistant ladle bottom casting material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336539A (en) * | 2011-09-02 | 2012-02-01 | 浙江铭德新材科技有限公司 | Waste utilization regeneration baking-free magnesia chrome brick and preparation method thereof |
| CN102617167A (en) * | 2012-03-31 | 2012-08-01 | 通化市五一环保科技股份有限公司 | Regeneration refractory castable taking used unshaped refractories as main materials |
| CN102617167B (en) * | 2012-03-31 | 2013-06-26 | 北京五一环保科技股份有限公司 | Regeneration refractory castable taking used unshaped refractories as main materials |
| CN102964137A (en) * | 2012-12-04 | 2013-03-13 | 武汉钢铁(集团)公司 | Low-silicon regeneration magnesium-chrome ramming material for RH refining furnace and preparation method thereof |
| CN103114178A (en) * | 2013-03-06 | 2013-05-22 | 攀钢集团攀枝花钢铁研究院有限公司 | RH refining furnace, insertion tube thereof and preparation method |
| CN103114178B (en) * | 2013-03-06 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | RH refining furnace, insertion tube thereof and preparation method |
| CN106905929A (en) * | 2017-03-22 | 2017-06-30 | 辽宁中镁控股股份有限公司 | A kind of solid heat storage material and preparation method and application |
| CN106905929B (en) * | 2017-03-22 | 2019-09-20 | 辽宁中镁高温材料有限公司 | A kind of solid heat storage material and preparation method and application |
| CN114180940A (en) * | 2021-12-21 | 2022-03-15 | 武连明 | High-strength magnesium castable and application thereof |
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Application publication date: 20110706 |