Composite slag remover for casting

A technology of slag agent and waste slag, which is applied in the field of slag removal in metal processing, can solve the problems of affecting the safety of operators, bursting, unstable slag removal effect, etc., achieves high melt viscosity, improves efficiency, and is conducive to popularization and application.

Active Publication Date: 2012-10-31
LINYING YUZHONG FERROALLOYS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SiO due to natural perlite 2 、Al 2 o 3 and K 2 O, Na 2 The content of chemical components such as O has changed, and when it is used directly as a slag remover, it shows a big difference. After it expands and melts in the cast iron (steel) ladle, the slag-removing effect of the melt formed is different. , the melt performance is uncontrollable, and the slag removal effect is unstable; in addition, when using natural perlite to make a slag remover, it needs to be dried below 800°C to remove part of the crystal water, otherwise, it will cause bursting during use and cause environmental pollution. Pollution, affecting the safety of operating workers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0010] Use composite slag remover in 5 tons of electric furnace molten iron, raw material selection: perlite fine powder 75% by weight, silica fume 10% by weight, lightly burned bauxite 5% by weight, potash water glass 10% by weight, mix uniformly, dry and solidify, Prepared by crushing and screening to become a composite slag remover;

[0011] The chemical composition of the composite slag remover product is as follows: SiO 2 74%, Al 2 o 3 13%, CaO1.0%, MgO0.7%, Na 2 O3.0%, K 2 O4.5%, and the rest are trace impurities.

example 2

[0013] Composite slag remover for small ladle molten iron, raw material selection: perlite fine powder, white carbon black, light-burned bauxite and sodium silicate; the content of each component is: perlite fine powder 80% by weight, white carbon black 2 % by weight, 3% by weight of light-burned bauxite and 15% by weight of sodium water glass are uniformly mixed, dried and solidified, crushed and sieved.

[0014] The chemical composition of the composite slag remover product is as follows: SiO 2 73%, Al 2 o 3 13%, CaO1.0%, MgO0.7%, Na 2 O4.5%, K 2 O3.5%, and the rest are trace impurities.

example 3

[0016] Composite slag remover for molten steel, raw materials: perlite fine powder, silica fume, activated alumina and potassium silicate; the content of each component is: perlite fine powder 85% by weight, silica fume 8% by weight, active oxidation It is prepared by uniformly mixing 5% by weight of aluminum and 2% by weight of potassium silicate, drying and curing, crushing and sieving.

[0017] The chemical composition of the composite slag remover product is as follows: SiO 2 75%, Al 2 o 3 14%, CaO1.0%, MgO0.7%, Na 2 O3.0%, K 2 O4.0%, the rest are trace impurities.

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Abstract

The invention discloses a slag remover, in particular relates to a composite slag remover for casting, and belongs to the technical field of metal processing slag removing. The composite slag remover is composed of 75-95 wt% of pearlite fine powder with particle size <0.3mm, 0.2-10wt% of active SiO2, 0.1-5wt% of active Al2O3 and 2-15 wt% of water glass and prepared through even mixing, drying, curing, breaking and screening. The composite slag remover can meet different production requirements from small packets to large packets and from iron casting to steel casting. The produced slag remover is light, quiet on metal liquid, high in melt viscosity after melting, and favorable for slag accretion and slag removing.

Description

technical field [0001] The invention relates to a slag remover, in particular to a composite slag remover for casting, and belongs to the technical field of metal processing slag remover. Background technique [0002] The original slag remover mostly uses straw ash or asbestos ash, which has been eliminated due to the harsh production environment of the slag remover. Now basically use natural perlite as raw material to produce slag remover. SiO due to natural perlite 2 、Al 2 o 3 and K 2 O, Na 2 The content of chemical components such as O has changed, and when it is used directly as a slag remover, it shows a big difference. After it expands and melts in the cast iron (steel) ladle, the resulting melt has different slag collection and slag removal effects. , the melt performance is uncontrollable, and the slag removal effect is unstable; in addition, when using natural perlite to make a slag remover, it needs to be dried below 800°C to remove part of the crystal water,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D27/00B22D1/00C21C7/04
Inventor 黄强芦永军
Owner LINYING YUZHONG FERROALLOYS
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