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Compound molten iron desulfurizer

A molten iron desulfurization and composite technology, applied in the field of composite molten iron desulfurizers, can solve the problems of reducing desulfurization effect and the like

Inactive Publication Date: 2009-06-17
梁新亚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Actually reduces the effect of desulfurization

Method used

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Embodiment Construction

[0007] The weight percentage of each component of the composite hot metal desulfurizer of the present invention is: active lime 60-75, calcium aluminate 5-8, passivation magnesium 4-10, metal aluminum 5-10, calcium fluoride 4-7, and the rest are Impurities. In specific use, it should be flexibly adjusted according to the quality of the raw materials of the desulfurizer and the sulfur content of the molten iron to be treated.

[0008] As a specific embodiment of the present invention, the formula is: activated lime 70, calcium aluminate 6, passivated magnesium 8, metal aluminum 8, calcium fluoride 6, the rest are impurities, and the sum of the above components is 100%. In order to further reduce the cost, you can replace the aluminum powder with the chips generated during the machining of aluminum products, heat the aluminum chips at high temperature to remove the oil, and then crush them for use.

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Abstract

The invention discloses a compound molten iron desulfurizer, which mainly comprises (by weight percent) active lime 60-75, calcium aluminate 5-8, inactivated 4-10, metallic aluminum 5-10, calcium fluoride 4-7, and balancing foreign matter. The desulfurizing agent has low cost and good sulfur removal effect.

Description

1. Technical Field [0001] The present invention discloses a composite hot metal desulfurizer, specifically a method for preparing a desulfurizer for desulfurizing molten iron for steelmaking. 2. Background technology [0002] With the development of the national economy and the iron and steel industry, the quality requirements for steel products are getting higher and higher, and the demand for "clean steel" is increasing. Therefore, most steel plants at home and abroad have used molten iron for steelmaking. Desulfurization pretreatment. Commonly used materials for desulfurization agents used in hot metal pretreatment are activated lime, calcium carbide (commonly known as calcium carbide), metallic magnesium (or passivated magnesium), rare earth materials, etc. Among them, metallic magnesium and rare earth materials have better desulfurization effects. Good, but the price is relatively high. For example, the price of passivated magnesium is as high as more than 20,000 yuan per to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/064
Inventor 梁新亚
Owner 梁新亚
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