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A molten iron-coated slag agent prepared from boron mud

A technology of slag gathering agent and molten iron ladle, which is applied in the field of iron and steel metallurgy, can solve the problems of hot metal resulfurization and slag removal times, poor slag accumulation effect, and low slag removal efficiency, achieving significant social and economic benefits and improving slag removal efficiency , The effect of reducing the number of slag removal

Active Publication Date: 2017-11-17
江阴智产汇知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is: to invent a kind of slag gathering agent in molten iron prepared by using waste boron mud to solve the problems of poor slag gathering effect, low slag removal efficiency, many times of molten iron resulfurization and slag removal, etc. Solve the problems of large iron loss during slag removal, and realize the reuse of waste boron mud at the same time, reducing the production cost of slag removal agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The slag-removing and slag-gathering agent of the present invention is prepared by using iron slag after desulfurization by single injection of lime powder for the hot metal pretreatment powder spraying desulfurization process. The raw material composition (weight fraction) of the slag-gathering agent is as follows:

[0029] Boron mud 50%, silica 40%, corundum powder 10%.

[0030] All raw materials are dried, milled, batched, mixed and granulated to obtain finished products, specifically: all raw materials are dried and ground to pass through a 40-mesh sieve, and then the ingredients are weighed according to the above weight percentage, passed through the mechanical After stirring and mixing, it is sprayed and granulated in the drum, and the particle size of the finished product is 1-3 mm, and then dried and packed in a moisture-proof package to obtain the finished product.

[0031] The product of the present invention is used when removing slag from a 100-ton ladle. Th...

Embodiment 2

[0033] The slag removal and slag gathering agent of the present invention is prepared by single injection of iron slag after magnesium desulfurization in the powder spraying desulfurization process of molten iron pretreatment. The raw material composition (weight fraction) of the slag gathering agent is as follows:

[0034] Boron mud 65%, silica 30%, corundum powder 5%.

[0035] All raw materials are dried, milled, batched, mixed and granulated to obtain finished products, specifically: all raw materials are dried and ground to pass through a 40-mesh sieve, and then the ingredients are weighed according to the above weight percentage, passed through the mechanical After stirring and mixing, it is sprayed and granulated in the drum, and the particle size of the finished product is 1-3 mm, and then dried and packed in a moisture-proof package to obtain the finished product.

[0036] The product of the present invention is used when removing slag from a 100-ton ladle. The specific ...

Embodiment 3

[0038] The slag-removing and slag-gathering agent of the present invention is prepared by using quicklime-magnesium mixed spraying desulfurized iron slag for the pretreatment of molten iron by powder spraying and desulfurization. The raw material composition (weight fraction) of the slag-gathering agent is as follows:

[0039] Boron mud 57%, silica 35%, corundum powder 8%.

[0040] All raw materials are dried, milled, batched, mixed and granulated to obtain finished products, specifically: all raw materials are dried and ground to pass through a 40-mesh sieve, and then the ingredients are weighed according to the above weight percentage, passed through the mechanical After stirring and mixing, it is sprayed and granulated in the drum, and the particle size of the finished product is 1-3 mm, and then dried and packed in a moisture-proof package to obtain the finished product.

[0041] The product of the present invention is used when removing slag from a 100-ton ladle, and the ...

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Abstract

The invention relates to the technical field of ferrous metallurgy, in particular to a ladle slag conglomeration agent prepared by boric sludge. The slag conglomeration agent is made of raw materials including, in weight percent, 50%-65% of boric sludge, 30%-40% of silica and 5%-10% of emery powder. A preparation method of the slag conglomeration agent mainly includes the steps of grinding, distributing, blending and pelleting. The ladle slag conglomeration agent is added into a ladle slag layer before slag removal and after powder injection desulfurization pretreatment is performed in a ladle, the agglomeration performance of desulfurization slag can be effectively improved, slag collection and slag removal efficiency is increased, slag removal frequency is decreased, slag removal time is shortened, slag removal iron loss can be reduced, molten iron backflow is decreased, desulfurization effects are ensured, and the ladle slag conglomeration agent has remarkable economic and social benefits and is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a molten iron-coated slag agent prepared from boron mud. Background technique [0002] The grade of most boron ores in our country is low. After extracting borax by carbon-alkali method, a large amount of waste boron sludge is produced. Due to the complicated treatment process of boron sludge, it has been piled up as waste residue. Water resources are seriously polluted, and the comprehensive utilization of boron mud needs to be solved. [0003] In the field of iron and steel metallurgy, hot metal spray powder desulfurization pretreatment has been promoted nationwide; the desulfurization of molten iron in the ladle is mainly by spraying CaO, Mg particles or CaO+Mg. After the molten iron is desulfurized, a large amount of The sulfur-containing slag needs to be removed, but because the iron slag after desulfurization is difficult to gather into agglomerates, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/076C21C7/064
CPCY02P10/20
Inventor 王宏明李桂荣李杨
Owner 江阴智产汇知识产权运营有限公司