CN104446550A - Refractory castable for tapping channel - Google Patents
Refractory castable for tapping channel Download PDFInfo
- Publication number
- CN104446550A CN104446550A CN201410719137.2A CN201410719137A CN104446550A CN 104446550 A CN104446550 A CN 104446550A CN 201410719137 A CN201410719137 A CN 201410719137A CN 104446550 A CN104446550 A CN 104446550A
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- parts
- refractory castable
- tapping channel
- aggregate
- corundum
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Abstract
The invention provides a refractory castable for a tapping channel. The refractory castable comprises the following components in parts by mass: 60 parts of dense white corundum aggregate, 10 parts of high-quality high-aluminum clinker, 6 parts of sub-white corundum, 9 parts of silicon carbide, 5 parts of flake graphite, 10 parts of calcium aluminate cement and 0.5 part of an additive. According to the refractory castable for the tapping channel, by adopting dense corundum as the aggregate, the requirements on size and hardness are strict and refractoriness is greater than 1770 degrees. By the optimal scheme produced by the ratio, the tapping channel is resistant to molten iron erosion and no cracks are generated and the refractory castable has the advantages of good thermal stability resistance and small re-burning volume change.
Description
Technical field
The present invention relates to a kind of casting house refractory castable, belong to cement technology field.
Background technology
For traditional iron runner, in the slag that blast-furnace smelting is produced, SiO2 content is higher, and it corrodes comparatively serious to iron runner material, thus affects the iron runner material life-span.And owing to lacking experience, there is operant level, the understanding of the ratio of iron ore composition transfer, scum amount, the situation of tapping a blast furnace of casting house, construction and the problem such as baking, envrionment temperature is not enough, causes that iron runner work-ing life is lower and material unit consumption is very high.Iron runner material is just used to the refractory materials of casting house liner, and the height in iron runner material work-ing life directly determines the work-ing life of iron runner, thus determines the throughput of blast furnace and the height of efficiency.
Summary of the invention
The invention provides a kind of casting house refractory castable, adopt fine and close corundum to do aggregate, granularity and hardness all have strict demand, and refractoriness is greater than 1770 degree.The preferred plan that proportioning is produced, makes the resistance to molten iron of iron runner wash away, does not occur crackle.Heat-resistant stability is good; Reheating volume change is little; Resistance of oxidation is strong; Easy construction, non-caked slag iron, is convenient to repair and remove; Have even, high dense structure, intensity is high; And in use can not discharge obnoxious flavour, be conducive to protection of the environment.
For solving above technical problem, the invention provides following technical scheme: a kind of casting house refractory castable, comprises according to mass ratio: 60 parts, fine and close white fused alumina aggregate, 10 parts, premium high-alumina grog, sub-white corundum 6 parts, 9 parts, silicon carbide, crystalline flake graphite 5 parts, aluminous cement 10 parts, additive 0.5 part.
This casting house refractory castable that the present invention relates to, casting house refractory castable belongs to AlO-SiC-C matter ultra-low cement refractory castable, adopt fine and close white fused alumina, sub-white corundum, Brown Alundum, premium high-alumina grog, the material such as silicon carbide and crystalline flake graphite, then add that to meet micro mist, bonding agent and admixture formulated.Have that intensity is large, resistance of oxidation is strong, iron influx high.Be applicable to the working lining such as tap drain slag line district, molten iron district, Zhigou slag runner, oscillating channel of the large and medium-sized blast furnace iron runner with many iron notchs.This product has certain superiority in industry.
Embodiment
A kind of casting house refractory castable, comprises according to mass ratio: 60 parts, fine and close white fused alumina aggregate, 10 parts, premium high-alumina grog, sub-white corundum 6 parts, 9 parts, silicon carbide, crystalline flake graphite 5 parts, aluminous cement 10 parts, additive 0.5 part.
。
Known by upper table, this product is compared as follows with the like product of prior art:
1, product resistance toheat is good, and the melting loss rate of molten iron is low, suitable with like product.
2, high, the medium temperature intensity of product strength does not reduce, and directly can be used as working lining.Domestic like product intensity is low, medium temperature intensity declines.
3, convenient for construction thin-walled lining body construction, performance is better.
4, this product is in advanced level at present at home.
Embodiment of the present invention does not form the restriction to the application's scope; within every spirit in the present invention's design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection scope of the present invention.
Claims (1)
1. a casting house refractory castable, is characterized in that, comprises according to mass ratio: 60 parts, fine and close white fused alumina aggregate, 10 parts, premium high-alumina grog, sub-white corundum 6 parts, 9 parts, silicon carbide, crystalline flake graphite 5 parts, aluminous cement 10 parts, additive 0.5 part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719137.2A CN104446550A (en) | 2014-12-03 | 2014-12-03 | Refractory castable for tapping channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719137.2A CN104446550A (en) | 2014-12-03 | 2014-12-03 | Refractory castable for tapping channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104446550A true CN104446550A (en) | 2015-03-25 |
Family
ID=52893396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410719137.2A Pending CN104446550A (en) | 2014-12-03 | 2014-12-03 | Refractory castable for tapping channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104446550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588058A (en) * | 2016-12-26 | 2017-04-26 | 中钢集团耐火材料有限公司 | High-strength composite material for hot metal melting and large container working layers and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030095A (en) * | 1988-05-09 | 1989-01-04 | 冶金工业部建筑研究总院 | Refractory Castables for BF Troughs and Runners |
| CN102633513A (en) * | 2012-05-08 | 2012-08-15 | 中国钢研科技集团有限公司 | Fast-baking explosion proof type refractory castable for blast furnace iron runner |
-
2014
- 2014-12-03 CN CN201410719137.2A patent/CN104446550A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030095A (en) * | 1988-05-09 | 1989-01-04 | 冶金工业部建筑研究总院 | Refractory Castables for BF Troughs and Runners |
| CN102633513A (en) * | 2012-05-08 | 2012-08-15 | 中国钢研科技集团有限公司 | Fast-baking explosion proof type refractory castable for blast furnace iron runner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588058A (en) * | 2016-12-26 | 2017-04-26 | 中钢集团耐火材料有限公司 | High-strength composite material for hot metal melting and large container working layers and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20170315 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |