CN105272305A - Silica sol and corundum base combined castable - Google Patents
Silica sol and corundum base combined castable Download PDFInfo
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- CN105272305A CN105272305A CN201510740664.6A CN201510740664A CN105272305A CN 105272305 A CN105272305 A CN 105272305A CN 201510740664 A CN201510740664 A CN 201510740664A CN 105272305 A CN105272305 A CN 105272305A
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- silicasol
- aluminate cement
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Abstract
The invention discloses a silica sol and corundum base combined castable, which is prepared from the following ingredients in proportion: 50 to 70 parts of brown aluminum oxide or compact corundum, 10 to 20 parts of silicon carbide, 5 to 8 parts of calcium aluminate cement, 15 to 25 parts of nanometer CaCO3, 3 to 5 parts of silica sol, 1 to 2 parts of sodium hexametahposphate and 3 to 6 parts of Si3N4. The nanometer CaCO3, the calcium aluminate cement, the Si3N4 and the like are introduced, so that the normal-temperature and high-temperature intensity of a product is improved; after a proper amount of sodium hexametahposphate is used, the product has high flowability; the in-site casting construction is convenient; the construction efficiency is improved; the blast furnace in-time tapping is ensured; the service life of the product is also prolonged; the ton iron refractory consumption is reduced, so that the cost of an industrial product in steel and iron industry is enabled to be reduced. The silica sol and corundum base combined castable has the excellent performances that the inoxidizability is good; the high-temperature performance is good; the service life is long, and the like.
Description
[technical field]
The present invention relates to the technical field of Metal smelting, particularly a kind of technical field of silicasol-combined corundum base mould material.
[background technology]
Blast furnace iron outlet groove guides high temperature liquid iron with slag and makes it the passage that is fully separated, its use life-span of resistance to material, directly affect the normal production of blast furnace.Current casting house tissue looseness, anti-oxidant slag, iron influx are low, and a casting house light maintenance in three days, an overhaul in five days, repeats to repair hook often, and labor strength is large, and casting house is short for duration of service.The frequent blast furnace that affects taps a blast furnace on schedule, makes troubles to blast fumance.Along with the continuous progress of intensification of smelting process in BF and blast furnace operation technology, the capacity factor of a blast furnace and the number of casts are on the increase, and the working conditions of casting house refractory materials is day by day harsh.More and more higher to the requirement of the safe handling of casting house material, longevity.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, proposes a kind of silicasol-combined corundum base mould material, and the casting house of building can be made to have the high-performances such as the good and long service life of good in oxidation resistance, high-temperature behavior.
For achieving the above object, the present invention proposes a kind of silicasol-combined corundum base mould material, comprise following component and each component ratio is:
As preferably, described nano-calcium carbonate granularity is between 0.02 ~ 0.07 μm.
As preferably, the quality index of described Sodium hexametaphosphate 99 is: Na6O18P6 >=80%.
As preferably, described pure calcium aluminate cement is CA70 pure calcium aluminate cement.
As preferably, the quality index of described silicon nitride is: Si3N4 >=91%.
As preferably, comprise following component and the mass fraction of each component is:
Brown Alundum or compact alumina: 50 parts, silicon carbide: 20 parts, pure calcium aluminate cement: 5 parts, nano-calcium carbonate: 25 parts, silicon sol: 3 parts, Sodium hexametaphosphate 99: 2 parts, Si3N4:3 part.
As preferably, described in comprise following component and the mass fraction of each component is:
Brown Alundum or compact alumina: 70 parts, silicon carbide: 10 parts, pure calcium aluminate cement: 8 parts, nano-calcium carbonate: 15 parts, silicon sol: 5 parts, Sodium hexametaphosphate 99: 1 part, Si3N4:6 part.
As preferably, comprise following component and the mass fraction of each component is:
Brown Alundum or compact alumina: 60 parts, silicon carbide: 15 parts, pure calcium aluminate cement: 8 parts, nano-calcium carbonate: 20 parts, silicon sol: 4 parts, Sodium hexametaphosphate 99: 1 part, Si3N4:5 part.
Beneficial effect of the present invention: the present invention improves the normal temperature hot strength of product by introducing nm level CaCO_3, pure calcium aluminate cement, Si3N4 etc., and product has good mobility after adopting appropriate Sodium hexametaphosphate 99, be convenient to cast-in-site construction, improve operating efficiency, ensure that blast furnace taps a blast furnace on schedule, also improve the work-ing life of product, reduce the consumption of the resistance to material of ton iron, thus drive the cost of steel industry Industrial products to decline.A kind of silicasol-combined corundum of the present invention base mould material has the high-performances such as the good and long service life of good in oxidation resistance, high-temperature behavior.
Feature of the present invention and advantage will be described in detail by embodiment.
[embodiment]
A kind of silicasol-combined corundum base of the present invention mould material, comprises following component and each component ratio is:
Further, described nano-calcium carbonate granularity is between 0.02 ~ 0.07 μm, and the quality index of described Sodium hexametaphosphate 99 is: Na6O18P6 >=80%;
Further, described pure calcium aluminate cement is CA70 pure calcium aluminate cement, and the quality index of described silicon nitride is: Si3N4 >=91%.
Embodiment one: Brown Alundum or compact alumina: 50 parts, silicon carbide: 20 parts, pure calcium aluminate cement: 5 parts, nano-calcium carbonate: 25 parts, silicon sol: 3 parts, Sodium hexametaphosphate 99: 2 parts, Si3N4:3 part.
Embodiment two: Brown Alundum or compact alumina: 70 parts, silicon carbide: 10 parts, pure calcium aluminate cement: 8 parts, nano-calcium carbonate: 15 parts, silicon sol: 5 parts, Sodium hexametaphosphate 99: 1 part, Si3N4:6 part.
Embodiment three: Brown Alundum or compact alumina: 60 parts, silicon carbide: 15 parts, pure calcium aluminate cement: 8 parts, nano-calcium carbonate: 20 parts, silicon sol: 4 parts, Sodium hexametaphosphate 99: 1 part, Si3N4:5 part.
A kind of silicasol-combined corundum base of the present invention mould material, introduce nm level CaCO_3, nm level CaCO_3 granularity is little, distribution consistency degree is high, and reaction in－situ generates calcium aluminate mineral, therefore the Alumina-based castable containing nm level CaCO_3 has higher cold conditions and hot modulus of rupture compared with the Alumina-based castable of aluminous cement, and can improve the strength retention after product thermal shock; After introducing different water reducers, the mobility of the mould material containing appropriate Sodium hexametaphosphate 99 is best, and water-reducing effect is best; Adopt silicon sol to instead of part pure calcium aluminate cement, as combined binder, there is better normal temperature hot strength; Add Si3N4, significantly improve the slag resistance of product, and be conducive to the high temperature break resistant intensity improving product.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (8)
1. a silicasol-combined corundum base mould material, is characterized in that: comprise following component and each component ratio is:
2. a kind of silicasol-combined corundum base mould material as claimed in claim 1, is characterized in that: described nano-calcium carbonate granularity is between 0.02 ~ 0.07 μm.
3. a kind of silicasol-combined corundum base mould material as claimed in claim 1, is characterized in that: the quality index of described Sodium hexametaphosphate 99 is: Na6O18P6 >=80%.
4. a kind of silicasol-combined corundum base mould material as claimed in claim 1, is characterized in that: described pure calcium aluminate cement is CA70 pure calcium aluminate cement.
5. a kind of silicasol-combined corundum base mould material as claimed in claim 1, is characterized in that: the quality index of described silicon nitride is: Si3N4 >=91%.
6. a kind of silicasol-combined corundum base mould material as claimed in claim 1, is characterized in that: comprise following component and the mass fraction of each component is:
Brown Alundum or compact alumina: 50 parts, silicon carbide: 20 parts, pure calcium aluminate cement: 5 parts, nano-calcium carbonate: 25 parts, silicon sol: 3 parts, Sodium hexametaphosphate 99: 2 parts, Si3N4:3 part.
7. a kind of silicasol-combined corundum base mould material as claimed in claim 1, is characterized in that: comprise following component and the mass fraction of each component is:
Brown Alundum or compact alumina: 70 parts, silicon carbide: 10 parts, pure calcium aluminate cement: 8 parts, nano-calcium carbonate: 15 parts, silicon sol: 5 parts, Sodium hexametaphosphate 99: 1 part, Si3N4:6 part.
8. a kind of silicasol-combined corundum base mould material according to any one of claim 1 to 7, is characterized in that: comprise following component and the mass fraction of each component is:
Brown Alundum or compact alumina: 60 parts, silicon carbide: 15 parts, pure calcium aluminate cement: 8 parts, nano-calcium carbonate: 20 parts, silicon sol: 4 parts, Sodium hexametaphosphate 99: 1 part, Si3N4:5 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510740664.6A CN105272305A (en) | 2015-11-04 | 2015-11-04 | Silica sol and corundum base combined castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510740664.6A CN105272305A (en) | 2015-11-04 | 2015-11-04 | Silica sol and corundum base combined castable |
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| CN105272305A true CN105272305A (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510740664.6A Pending CN105272305A (en) | 2015-11-04 | 2015-11-04 | Silica sol and corundum base combined castable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348770A (en) * | 2016-08-29 | 2017-01-25 | 中冶武汉冶金建筑研究院有限公司 | High thermal conductivity silicon carbide grouting material combined with sol used for bottom leveling of blast furnace |
| CN114230316A (en) * | 2021-12-28 | 2022-03-25 | 河南华宇新材料有限公司 | Composite material for blast furnace lining and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661117A (en) * | 2004-02-27 | 2005-08-31 | 武汉科技大学 | Method for preparing cast material of AL2O3-SiC-Ciron runner |
| CN1827555A (en) * | 2005-02-28 | 2006-09-06 | 宝山钢铁股份有限公司 | Non-oxide composite refractory materials for molten iron chute |
| CN102503466A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Andalusite self-flow castable |
| CN102757252A (en) * | 2012-08-09 | 2012-10-31 | 山国强 | 1080 m<3> blast furnace main iron runner castable |
-
2015
- 2015-11-04 CN CN201510740664.6A patent/CN105272305A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661117A (en) * | 2004-02-27 | 2005-08-31 | 武汉科技大学 | Method for preparing cast material of AL2O3-SiC-Ciron runner |
| CN1827555A (en) * | 2005-02-28 | 2006-09-06 | 宝山钢铁股份有限公司 | Non-oxide composite refractory materials for molten iron chute |
| CN102503466A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Andalusite self-flow castable |
| CN102757252A (en) * | 2012-08-09 | 2012-10-31 | 山国强 | 1080 m<3> blast furnace main iron runner castable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348770A (en) * | 2016-08-29 | 2017-01-25 | 中冶武汉冶金建筑研究院有限公司 | High thermal conductivity silicon carbide grouting material combined with sol used for bottom leveling of blast furnace |
| CN114230316A (en) * | 2021-12-28 | 2022-03-25 | 河南华宇新材料有限公司 | Composite material for blast furnace lining and preparation method thereof |
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Application publication date: 20160127 |
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| RJ01 | Rejection of invention patent application after publication |