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Castable for ladle deslagging plate, and preparation method and applicable of castable

A castable and slag plate technology, applied in the field of refractory materials, can solve the problems of affecting production speed, increasing production cost, shortening melting loss, etc., to prolong service life, improve high temperature resistance and impact resistance, and be easy to control Effect

Active Publication Date: 2012-06-20
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ladle slag removal plate commonly used in the market is made of a whole piece of steel plate. After a period of use, the front end of the slag removal plate will be rapidly melted and shortened. Usually, after 15 to 20 furnaces, the residual length cannot meet the use requirements. , it needs to be processed offline, which will cause frequent maintenance, affect the production speed and increase the production cost

Method used

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  • Castable for ladle deslagging plate, and preparation method and applicable of castable

Examples

Experimental program
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Effect test

Embodiment 1

[0016] A casting material for ladle slag removal board, which consists of the following components by weight: 50kg of mullite, 17kg of andalusite, 20kg of bauxite, 4kg of pure calcium aluminate cement, 5kg of alumina micropowder, 4kg of silicon carbide micropowder, three Sodium polyphosphate 1.5kg, organic fiber 0.5kg; Al in selected mullite 2 o 3 The weight percentage of mullite particles is 75-77%, and the particle size of mullite particles is ≤5mm, among which, 3mm 2 o 3 The weight percentage content of the andalusite is ≥65%, and the particle size of andalusite is 3-1mm; Al in the selected bauxite powder 2 o 3 The weight percentage is ≥90%, the particle size is ≤0.088mm, the weight percentage of SiC in the selected silicon carbide powder is ≥90%, and the particle size is 200 mesh; the particle size of the selected organic fiber is 3-4mm, and the particle size of sodium tripolyphosphate is ≤0.088mm.

Embodiment 2

[0018] A castable for ladle slag removal board, which consists of the following components by weight: 70kg of mullite, 10kg of andalusite, 10kg of bauxite powder, 4kg of pure calcium aluminate cement, 5kg of alumina micropowder, 3kg of silicon carbide micropowder, Sodium tripolyphosphate 1.5kg, organic fiber 0.5kg, steel fiber 1kg; Al in selected mullite 2 o 3 The weight percentage of mullite particles is 70-75%, and the particle size of mullite particles is ≤5mm, among which, 3mm2 o 3 The weight percentage content of the andalusite is ≥60%, and the particle size of andalusite is 3-1mm; Al in the selected bauxite powder 2 o 3 Weight percentage ≥ 85%, particle size ≤ 0.088mm, Al in the selected pure calcium aluminate cement 2 o 3 The weight percentage content ≥ 70%; Al in the selected alumina micropowder 2 o 3 The weight percentage of SiC is more than 98%; the weight percentage of SiC in the selected silicon carbide micropowder is more than 90%; the particle size of the s...

Embodiment 3

[0020] A castable for ladle slag removal board, which consists of the following components by weight: 60kg of mullite, 10kg of andalusite, 20kg of bauxite powder, 3kg of pure calcium aluminate cement, 4kg of alumina micropowder, 5kg of silicon carbide micropowder, Sodium hexametaphosphate 1kg, sodium tripolyphosphate 0.5kg, organic 0.5kg, steel fiber 1kg; Al in selected mullite 2 o 3 The weight percentage of mullite particles is 70-75%, and the particle size of mullite particles is ≤5mm, among which, 3mm 2 o 3 The weight percentage content of the andalusite is ≥55%, and the particle size of andalusite is 3-1mm; Al in the selected bauxite powder 2 o 3 Weight percentage ≥ 90%, particle size ≤ 0.088mm, Al in the selected pure calcium aluminate cement 2 o 3 The weight percentage content ≥ 69%; Al in the selected alumina micropowder 2 o 3 The weight percentage of SiC in the selected silicon carbide powder is ≥98%; the weight percentage of SiC in the selected silicon carbide p...

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Abstract

The invention discloses a castable for a ladle deslagging plate, and a preparation method and an applicable of the castable. The castable for the ladle deslagging plate comprises the following components in parts by weight: 50-70 parts of mullite, 10-20 parts of andalusite, 10-20 parts of bauxite powder, 3-5 parts of pure calcium aluminate cement, 4-6 parts of aluminum oxide micropowder, 3-5 parts of silicon carbide micropowder and 2-3 parts of compound additive, wherein the compound additive is a combination of two or more of organic fiber, steel fiber, and sodium tripolyphosphate or sodium hexametaphosphate. When the castable is cast on the outer surface of the ladle deslagging plate, the service life of the ladle deslagging plate can be prolonged and the preparation cost can be reduced; and the preparation method of the castable for the ladle deslagging plate is simple, and easy to operate.

Description

technical field [0001] The invention belongs to the refractory material used in the field of iron and steel smelting, and specifically refers to a castable for ladle slag removal board, its production method and application. Background technique [0002] Sulfur is a harmful element in steel. In order to produce high-quality steel, especially special-purpose and high-value-added steel, it is necessary to reduce the sulfur content in steel. Compared with steelmaking desulfurization or refining desulfurization, hot metal desulfurization pretreatment process It is simpler and is one of the effective ways to reduce the desulfurization burden of steelmaking, simplify operation and improve the technical and economic indicators of steelmaking. However, the molten iron slag after molten iron desulfurization pretreatment has a high sulfur content. If this part of the slag enters the steelmaking furnace, the amount of lime will be increased, and sulfur may also enter the molten steel f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 郑吉红童健田先明洪学勤王志强姚亚双余其文蔡长秀
Owner WUGANG REFRACTORY CO LTD
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