CN102584299A - LM-T desilication swinging runner castable - Google Patents
LM-T desilication swinging runner castable Download PDFInfo
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- CN102584299A CN102584299A CN2012100559191A CN201210055919A CN102584299A CN 102584299 A CN102584299 A CN 102584299A CN 2012100559191 A CN2012100559191 A CN 2012100559191A CN 201210055919 A CN201210055919 A CN 201210055919A CN 102584299 A CN102584299 A CN 102584299A
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- mould material
- magnesia
- particle size
- desilication
- desiliconization
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Abstract
The invention discloses an LM-T desilication swinging runner castable. The LM-T desilication swinging runner castable comprises dense fused alumina, brown fused alumina, tabular corundum, active alumina powder, magnesite, sodium hexametaphosphate, an explosion-proof agent and silicon powder. The particle sizes of partial components in the castable are as follows: the particle size of the dense fused alumina is 5-8 mm, the particle size of the brown fused alumina is 3-5 mm, the particle size of the tabular corundum is 1-3 mm, the particle size of the brown fused alumina is 0-1 mm and the particle size of the active alumina powder is less than 3 microns, wherein the magnesite comprises magnesite of 0-1 mm and magnesite of 80 microns. The LM-T desilication swinging runner castable disclosed by the invention has the advantages of good slag erosion resistance, good slag penetration resistance, good heat shock resistance, good anti-stripping property and the like.
Description
Technical field
The present invention relates to refractory technology.
Background technology
Before not implementing desilication process, swinging flow jet uses mould material to be Al before the State of Blast Furnace
2O
3-SiC-C matter mould material liner.After the desiliconization of stokehold; Because the composition of slag changes after the desiliconization, and winding-up brown iron oxide amount is big, and slag and FeO permeate and wash away chemical erosion, the slag of swinging flow jet liner mould material; Quickened the breakage of swinging flow jet liner; Descended the work-ing life of swinging flow jet significantly, and iron influx is merely 3～40,000 tons, has had a strong impact on the preceding normal operation of State of Blast Furnace.How to improve the work-ing life of desiliconization swinging flow jet liner mould material, become the problem that the production of Baosteel blast furnace presses for solution.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of LM-T desiliconization swinging flow jet mould material, improves the work-ing life of desiliconization swinging flow jet liner mould material.
For solving the problems of the technologies described above; The present invention adopts following technical scheme: LM-T desiliconization swinging flow jet mould material is characterized in that: be made up of electric smelting compact alumina, brown corundum, plate diamond spar, active oxidation aluminium powder, magnesia, Sodium hexametaphosphate 99, detonation suppressor and silica flour.
As preferably, the granularity of part component is in the said mould material: electric smelting compact alumina 5～8mm; Palm fibre corundum 3～5mm; Plate diamond spar 1～3mm; Palm fibre corundum 0～1mm; Active oxidation aluminium powder＜3um; Wherein magnesia is made up of the magnesia of 0～1mm and the magnesia of 80um.
As preferably, the weight percent of each component is in the said mould material: electric smelting compact alumina 5～8mm:21%～24%; Palm fibre corundum 3～5mm:16%～19%; Plate diamond spar 1～3mm:18%～22%; Palm fibre corundum 0～1mm:15%～18%; Active oxidation aluminium powder＜3um:6%～10%; Magnesia 0～1mm:2%～5%; Magnesia 80um:1%～3%; Six meta-acid sodium: 0.4%～1%; Detonation suppressor: 1%～2%, silica flour: 0.5%～2%.
As preferably, said detonation suppressor is a polypropylene fibre.
Beneficial effect of the present invention is:
1, desiliconization swinging flow jet mould material is to substitute for Al before the LM-T State of Blast Furnace
2O
3-SiC-C matter swing mould material liner, the development adapting to that desiliconization novel process before the State of Blast Furnace requires.Technical feature such as this product has that anti-slag is invaded, anti-slag infiltration, anti-thermal shock and antistripping property are good, its technical indicator all reaches the top standard of domestic like product.
2, it has substituted the similar imported product of Baosteel, has reduced the smelting expense, has also practiced thrift valuable foreign exchange resources for country simultaneously.Simultaneously, it has also improved Al
2O
3The environmental pollution of-SiC-C matter mould material construction back baking has reduced the preceding working strength of workers of State of Blast Furnace.
3, along with metallurgy industry high added value steel product trend increases, desiliconization swing mould material Application Areas more and more widely before the LM-T State of Blast Furnace.
Embodiment
The weight percent of each component is in the mould material of the present invention: electric smelting compact alumina 5～8mm:21%～24%; Palm fibre corundum 3～5mm:16%～19%; Plate diamond spar 1～3mm:18%～22%; Palm fibre corundum 0～1mm:15%～18%; Active oxidation aluminium powder＜3um:6%～10%; Magnesia 0～1mm:2%～5%; Magnesia 80um:1%～3%; Six meta-acid sodium: 0.4%～1%; Detonation suppressor: 1%～2%, silica flour: 0.5%～2%.
Specify specific embodiment of the present invention below:
Embodiment 1, and the weight percent of each component is in the mould material: electric smelting compact alumina 5～8mm:22%; Palm fibre corundum 3～5mm:19%; Plate diamond spar 1～3mm:21%; Palm fibre corundum 0～1mm:18%; Active oxidation aluminium powder＜3um 10%; Magnesia 0～1mm:4%; Magnesia 80um:3%; Six meta-acid sodium: 0.4%; Detonation suppressor: 1.6%, silica flour: 1%.
Embodiment 2, and the weight percent of each component is in the mould material: electric smelting compact alumina 5～8mm:24%; Palm fibre corundum 3～5mm:19%; Plate diamond spar 1～3mm:19%; Palm fibre corundum 0～1mm:17%; Active oxidation aluminium powder＜3um:9%; Magnesia 0～1mm:5%; Magnesia 80um:3%; Six meta-acid sodium: 1%; Detonation suppressor: 1%, silica flour: 2%.
Embodiment 3, and the weight percent of each component is in the mould material: electric smelting compact alumina 5～8mm:24%; Palm fibre corundum 3～5mm:18.5%; Plate diamond spar 1～3mm:22%; Palm fibre corundum 0～1mm:18%; Active oxidation aluminium powder＜3um:8%; Magnesia 0～1mm:5%; Magnesia 80um:1%; Six meta-acid sodium: 1%; Detonation suppressor: 2%, silica flour: 0.5%.
Main technical schemes of the present invention is following:
When (1) introducing with the periclasite form, mould material in use secondary spinel reacts completely, and the inner MgOAl that forms of mould material
2O
3More tiny, active better, distributing more is tending towards granular boundary.
(2) because mould material is inner the spinel reaction takes place, produce volumetric expansion, and swell increment is bigger, how to make swell increment control within the specific limits, the quality of mould material is had very big influence.This project is through the adjustment of grain graininess, and is controlled effectively.
When (3) introducing with the periclasite form, because the periclasite aquation can cause mould material in bake process, to ftracture because of volumetric expansion is prone to produce, cause explosion during the body of particularly constructing baking, this project adds knock-sedative dope and organic fibre.Solved the explosion problem of construction body well.
Its performance index that can reach see the following form:
Claims (4)
1.LM-T desiliconization swinging flow jet mould material is characterized in that: form by electric smelting compact alumina, brown corundum, plate diamond spar, active oxidation aluminium powder, magnesia, Sodium hexametaphosphate 99, detonation suppressor and silica flour.
2. LM-T desiliconization swinging flow jet mould material according to claim 1, it is characterized in that: the granularity of part component is in the said mould material: electric smelting compact alumina 5～8mm; Palm fibre corundum 3～5mm; Plate diamond spar 1～3mm; Palm fibre corundum 0～1mm; Active oxidation aluminium powder＜3um; Wherein magnesia is made up of the magnesia of 0～1mm and the magnesia of 80um.
3. LM-T desiliconization swinging flow jet mould material according to claim 2, it is characterized in that: the weight percent of each component is in the said mould material: electric smelting compact alumina 5～8mm:21%～24%; Palm fibre corundum 3～5mm:16%～19%; Plate diamond spar 1～3mm:18%～22%; Palm fibre corundum 0～1mm:15%～18%; Active oxidation aluminium powder＜3um:6%～10%; Magnesia 0～1mm:2%～5%; Magnesia 80um:1%～3%; Six meta-acid sodium: 0.4%～1%; Detonation suppressor: 1%～2%, silica flour: 0.5%～2%.
4. LM-T desiliconization swinging flow jet mould material according to claim 3, it is characterized in that: said detonation suppressor is a polypropylene fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210055919 CN102584299B (en) | 2012-03-06 | 2012-03-06 | LM-T desilication swinging runner castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210055919 CN102584299B (en) | 2012-03-06 | 2012-03-06 | LM-T desilication swinging runner castable |
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| Publication Number | Publication Date |
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| CN102584299A true CN102584299A (en) | 2012-07-18 |
| CN102584299B CN102584299B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210055919 Expired - Fee Related CN102584299B (en) | 2012-03-06 | 2012-03-06 | LM-T desilication swinging runner castable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880451A (en) * | 2014-03-28 | 2014-06-25 | 长兴明天炉料有限公司 | Swing spout castable for blast furnace and preparation process thereof |
| CN109608174A (en) * | 2019-01-09 | 2019-04-12 | 武汉科技大学 | It can hydrated alumina combined corundum-spinel pouring material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640590A (en) * | 2004-01-14 | 2005-07-20 | 高兴奎 | Steel ladle Al-Mg compact electrocast corundum pouring material |
| CN1686948A (en) * | 2005-04-08 | 2005-10-26 | 上海彭浦特种耐火材料厂 | Improved type casting material based on bauxite for middle-small type ladle and preparation method |
| CN101020610A (en) * | 2006-12-08 | 2007-08-22 | 攀钢集团钢城企业总公司 | Poured material for foundry ladle bottom and its pouring process and mold |
| CN101658910A (en) * | 2009-09-20 | 2010-03-03 | 浙江红鹰集团股份有限公司 | Composite slag weir and preparation method thereof |
| CN102115337A (en) * | 2011-01-12 | 2011-07-06 | 长兴煤山新型炉料有限公司 | Fast-setting castable for main runner for COREX furnace and production technology thereof |
-
2012
- 2012-03-06 CN CN 201210055919 patent/CN102584299B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640590A (en) * | 2004-01-14 | 2005-07-20 | 高兴奎 | Steel ladle Al-Mg compact electrocast corundum pouring material |
| CN1686948A (en) * | 2005-04-08 | 2005-10-26 | 上海彭浦特种耐火材料厂 | Improved type casting material based on bauxite for middle-small type ladle and preparation method |
| CN101020610A (en) * | 2006-12-08 | 2007-08-22 | 攀钢集团钢城企业总公司 | Poured material for foundry ladle bottom and its pouring process and mold |
| CN101658910A (en) * | 2009-09-20 | 2010-03-03 | 浙江红鹰集团股份有限公司 | Composite slag weir and preparation method thereof |
| CN102115337A (en) * | 2011-01-12 | 2011-07-06 | 长兴煤山新型炉料有限公司 | Fast-setting castable for main runner for COREX furnace and production technology thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880451A (en) * | 2014-03-28 | 2014-06-25 | 长兴明天炉料有限公司 | Swing spout castable for blast furnace and preparation process thereof |
| CN109608174A (en) * | 2019-01-09 | 2019-04-12 | 武汉科技大学 | It can hydrated alumina combined corundum-spinel pouring material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102584299B (en) | 2013-08-21 |
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Granted publication date: 20130821 Termination date: 20200306 |