Slab continuous casting mold covering slag and production method thereof

A technology of mold mold slag and slab continuous casting, which is applied in the field of steelmaking auxiliary materials, can solve problems such as safe production, great environmental protection hazards, difficult comprehensive utilization of waste slag, and difficulty in ensuring purity, so as to reduce a large amount of accumulation and serious Pollution problems, good environmental benefits and social benefits, and remarkable results

Active Publication Date: 2012-07-11
XIXIA LONGCHENG METALLURGICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The waste slag produced in the electrolytic aluminum production process is currently difficult to comprehensively utilize, except for the patent No. 200910064313.2, which is entitled "Method for recovering cryolite from electrolytic aluminum waste slag using fluorine-containing hydrochloric acid", which discloses a method of using fluorine-containing hydrochloric acid to extract cryolite from electrolytic aluminum waste slag. A method for recovering cryolite from aluminum waste slag, using electrolytic aluminum waste slag and fluorine-containing hydrochloric acid as raw materials to react to prepare cryolite products
The advantages of the method provided by the invention are: ① using cheap electrolytic aluminum waste slag and fluorine-containing

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] A kind of slab continuous casting mold powder, its raw material formula includes: fluorite, soda ash, carbon black, graphite, sodium fluoride, clay, calcite, bauxite, manganese carbonate, cryolite, wollastonite, its quality The percentages are 15%, 10%, 2%, 5%, 3%, 2%, 6%, 7%, 4%, 2%, 44%, and the raw material cost is 1956 yuan / ton. The billet continuous casting mold powder enterprise standard: the chemical composition includes SiO 2 , MgO, CaO, Fe 2 o 3 、Al 2 o 3 , Na 2 O, F, MnO, volatiles and C 固定 , and its mass percentages are 27~29%, 1.2~1.7%, 31~34%, <2%, 6~8%, 7~9%, 8~10%, 3~5%, 5~7% %; physical index: alkalinity 1.21~1.25, melting point 1130~1160℃, viscosity 0.13~0.15Pa·S.

[0024] As a preferred embodiment of the present invention, the mold flux for the slab continuous casting mold includes electrolytic aluminum waste slag, fluorite, cement clinker, soda ash, carbon black, sodium fluoride, clay, calcite, bauxite, carbonic acid Manganese, wollastonite, ...

Embodiment 2

[0029] A slab continuous casting mold powder, the raw material formula of which includes: glass powder, fluorite, soda ash, imported carbon black, sodium fluoride, clay, calcite, bauxite, lithium carbonate, cryolite, wollastonite, Its mass percentage content is respectively 6%, 4%, 9%, 2%, 2%, 4%, 3%, 5%, 2%, 4%, 59%, and its raw material cost is 3786 yuan / ton. The billet continuous casting mold powder enterprise standard: the chemical composition includes SiO 2 , MgO, CaO, Fe 2 o 3 、Al 2 o 3 , Na 2 O, F, Li 2 O, volatile matter and C 固定 , its mass percentage content is 38~40%, 1~2%, 31~33%, <2%, 4.5~6.5%, 7~9%, 4~6%, 6~7%, 0.5~2% %; physical index: alkalinity 0.78~0.82, melting point 1060~1110℃, viscosity 0.4~0.45Pa·S.

[0030] As a preferred embodiment of the present invention, the slab continuous casting mold powder, its raw materials include electrolytic aluminum waste slag, glass powder, fluorite, soda ash, imported carbon black, sodium fluoride, clay, calcite, b...

Embodiment 3

[0035] A slab continuous casting mold mold powder, the raw material formula of which includes: fluorite, cement clinker, soda ash, carbon black, graphite, sodium fluoride, spodumene, magnesia, bauxite, cryolite, silica fume Stone, its mass percentage content is 8%, 3%, 12%, 3%, 3%, 4%, 5%, 2%, 2%, 8%, 80%, and its raw material cost is 2976 yuan / ton . The billet continuous casting mold powder enterprise standard: the chemical composition includes SiO 2 , MgO, CaO, Fe 2 o 3 、Al 2 o 3 , Na 2 O, F, Li 2 O, volatile matter and C 固定 , and its mass percentage content is 34~36%, 2~4%, 30~32%, <2%, 4~6%, 9~11%, 8.5~10.5%, 0.1~0.5%, 1~3% %, 4~6%; Physical properties: alkalinity 0.9~0.94, melting point 1075~1115℃, viscosity 0.13~0.15Pa·S.

[0036] As a preferred embodiment of the present invention, the mold flux for the slab continuous casting mold includes electrolytic aluminum waste slag, glass powder, fluorite, cement clinker, soda ash, carbon black, sodium fluoride, spundst...

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Abstract

The invention discloses slab continuous casting mold covering slag, which comprises the following chemical components in percentage by mass (wt percent): 25-40 percent of SiO2, 0.1-10 percent of MgO, 21-41 percent of CaO, 0.2-2.5 percent of Fe2O3, 2.5-14 percent of Al2O3, 3-14 percent of Na2O, 2.5-10 percent of F, 0-1.5 percent of Li2O, 0-6 percent of MnO, 0.5-10 percent of volatile matter and 1-11 percent of Cfixed. A cheap electrolytic aluminum waste residue raw material is effectively added into the slab continuous casting mold covering slag formula for use, wherein the chemical elements of fluorine, carbon, sodium, aluminum and the like can be used for substituting or partially substituting one or more of raw materials of the chemical elements used in the continuous casting mold covering slag formula, and the quality performance of a product can reach and meet enterprise standard. In actual production, the skilled worker in the art tries to reduce the cost in various aspects; but since the covering slag production field is far different from the electrolytic aluminum production field, improvement cannot be performed in the electrolytic aluminum waste residue and the electrolytic aluminum waste residue cannot be changed into things of value.

Description

technical field [0001] The invention belongs to the technical field of steelmaking auxiliary materials, and in particular relates to a slab continuous casting mold mold powder and a production method thereof. technical background [0002] At present, although China's steel production and consumption have maintained a growth trend, the growth rate has slowed down, and the steel production capacity is severely oversupplied; the price of raw materials and fuels is running at a high level, coupled with the impact of the global economic situation, the benefits of the steel industry have been greatly reduced. All iron and steel manufacturers have lowered the cost of various raw materials, as one of the auxiliary materials for steelmaking in the iron and steel industry - continuous casting mold powder is also listed; in addition, the prices of various production raw materials for continuous casting mold powder have risen, and its The competition in the industry has been pushed to a...

Claims

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Application Information

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IPC IPC(8): B22D11/111
Inventor 朱书成李晓阳秦教武赵博陈永艳汪国敏王岩徐金岩赵春宝白玉录万旭李国伟
Owner XIXIA LONGCHENG METALLURGICAL MATERIALS CO LTD
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