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Converter furnace steel-making desulfurizing agent and preparation method thereof

A desulfurizer and electric converter technology, applied in the field of electric converter steelmaking, can solve the problems of inability to improve the quality of steel products, difficult removal of impurity products, and inability to solve sulfur removal, etc. The effect of stability

Active Publication Date: 2013-08-28
芜湖县天海耐火炉料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the deoxidizers used in the steelmaking process of the domestic metallurgical industry are mainly aluminum or aluminum alloys. Aluminum or aluminum alloys are directly used for deoxidation treatment, but the impurities produced are not easy to remove in the finished product, which seriously affects the quality of the product. , its role is to improve the quality of steel, but its method can not solve the removal of sulfur in the steelmaking process, can not improve the quality of steel products, there is an urgent need for a product and method for steelmaking desulfurization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: Electric converter steelmaking desulfurizer, the weight parts of its raw materials are: 70 parts of calcium oxide, 3 parts of calcium difluoride, 10 parts of barium carbonate, 3 parts of silicon dioxide, 3 parts of silicon carbide, 5 parts of attapulgite, boron 3 parts of anhydride and 3 parts of flame retardant silicone grease, the dosage is 0.1-0.2% of the total castable.

[0011] The preparation method of the electric converter steelmaking desulfurizer is obtained by weighing each component raw material according to the weight part of the constituent raw materials, crushing and ball-milling the large granular raw materials, and then mixing and drying them uniformly.

[0012] When in use, spread the desulfurizer on the bottom of the ladle, keep the molten steel at 1620 degrees, tap after deoxidation, take a sample 4 minutes after tapping, and detect the sulfur content as 0.008%.

Embodiment 2

[0013] Example 2: Electric converter steelmaking desulfurizer, the weight parts of its raw materials are: 80 parts of calcium oxide, 8 parts of calcium difluoride, 13 parts of barium carbonate, 8 parts of silicon dioxide, 5 parts of silicon carbide, 10 parts of attapulgite, boron 5 parts of anhydride and 5 parts of flame retardant silicone grease, plus compound anti-explosion agent, the dosage is 0.1-0.2% of the total castable.

[0014] The preparation method of the electric converter steelmaking desulfurizer is obtained by weighing each component raw material according to the weight part of the constituent raw materials, crushing and ball-milling the large granular raw materials, and then mixing and drying them uniformly.

[0015] When in use, spread the desulfurizer on the bottom of the ladle, the molten steel is 1620 degrees, tap after AI deoxidation, take a sample 5 minutes after tapping, and the sulfur content is 0.009%.

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Abstract

The invention discloses a converter furnace steel-making desulfurizing agent and a preparation method thereof. The converter furnace steel-making desulfurizing agent is mainly obtained by evenly mixing the following composition raw materials in parts by weight: calcium oxide, calcium fluoride, barium carbonate, silica, carborundum, attapulgite, boron anhydrous and flame retardant silicone grease.The preparation method is used for the converter furnace steel-making desulfurizing agent which is the desulfurizing agent free from aluminum and can be used for improving the physical, mechanical and technical performances of steel. According to the converter furnace steel-making desulfurizing agent, gas is removed, nonmetal inclusions are changed, and the quality and mechanical performance of furnace steel making can be improved.

Description

technical field [0001] The invention relates to the technical field of electric converter steelmaking, in particular to an electric converter steelmaking desulfurizer and a preparation method thereof. Background technique [0002] At present, the deoxidizers used in the steelmaking process of the domestic metallurgical industry are mainly aluminum or aluminum alloys. Aluminum or aluminum alloys are directly used for deoxidation treatment, but the impurities produced are not easy to remove in the finished product, which seriously affects the quality of the product. , its role is to improve the quality of steel, but its method can not solve the removal of sulfur in the steelmaking process, can not improve the quality of steel products, an urgent need for a steelmaking desulfurization product and method. Contents of the invention [0003] In order to alleviate the deficiencies and defects of the prior art, the object of the present invention is to improve a desulfurizer for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/064
Inventor 吴大宏童振兰
Owner 芜湖县天海耐火炉料有限公司
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