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Compound molten iron desulfurizer

A hot metal desulfurization, composite technology, applied in the field of composite hot metal desulfurization agent, can solve the problem of reducing the desulfurization effect

Inactive Publication Date: 2006-09-06
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 percent of each component of the compound type molten iron desulfurizer of the present invention is: active lime 60-75, calcium aluminate 5-8, passivated magnesium 4-10, metal aluminum 5-10, calcium fluoride 4-7, the rest is 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, its formula is: active lime 70, calcium aluminate 6, passivated magnesium 8, metal aluminum 8, calcium fluoride 6, and the rest are impurities. The sum of the above components is 100%. In order to further reduce the cost, the chips produced during the machining of aluminum products can be used instead of aluminum powder, and the aluminum chips are heated at high temperature to remove oil and crushed 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 invention discloses a compound type molten iron desulfurizer, specifically a preparation method of the desulfurizer for desulfurizing molten iron for steelmaking. 2. Background technology [0002] With the development of the national economy and the steel industry, the quality requirements for steel products are getting higher and higher, and the demand for "pure steel" is increasing. Therefore, most steel mills at home and abroad carry out desulfurization pretreatment on molten iron used in steelmaking. Commonly used materials for desulfurizers used in molten iron pretreatment include active lime, calcium carbide (commonly known as calcium carbide), metallic magnesium (or passivated magnesium), and rare earth materials. Among them, metal magnesium and rare earth materials have better desulfurization effect, but the price is higher, such as the price of passivated magnesium is as high as more than 20,000 yuan per ton. In the pretreatment of mo...

Claims

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Application Information

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IPC IPC(8): C21C7/064
Inventor 梁新亚
Owner 梁新亚
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