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Steel fusant desulfurizer

A desulfurization agent and melt technology, applied in the field of iron and steel smelting, can solve the problems of low desulfurization efficiency and burning loss, and achieve the effect of improving desulfurization efficiency and increasing the reaction interface

Inactive Publication Date: 2009-09-16
方克明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low desulfurization efficiency and burning loss existing in the desulfurization of traditional desulfurizers in steelmaking or ironmaking industries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1, use 300 purpose CaCO 3 The powder is desulfurization powder, using 300 mesh micron pure iron powder as binder, CaCO 3 Powder and pure iron powder are mixed by ball mill and pressed into a block, pure iron powder and CaCO 3 The weight ratio of powder is 6:1.

Embodiment 2

[0014] Example 2. Use 600-mesh magnesium powder as desulfurization powder, and use 400-mesh micron pure iron powder as a binder. The magnesium powder and the pure iron powder are mixed by ball milling and pressed into blocks. The weight ratio of pure iron powder to magnesium powder is 5:1.

Embodiment 3

[0015] Example 3. 600 mesh CaF powder was used as desulfurization powder, 400 mesh micron pure iron powder was used as binder, CaF powder and pure iron powder were mixed by ball milling and pressed into blocks. The weight ratio of pure iron powder to CaF powder is 7:1.

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PUM

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Abstract

A steel fusant desulfurizer belongs to the field of steel smelting. The invention is characterized in that desulphurizing powder and straight iron powder are uniformly mixed by a ball mill and made into blocks by pressing; the desulphurizing powder is made of micrometer powder and nanometer powder, and the straight iron powder is adhesive using micrometer iron powder smaller than 250 meshes, and the weight ratio of the straight iron powder and the desulphurizing powder is (4-10):1; the desulphurizing powder comprises CaCO3 powder, CaO powder, CaF powder, Ca powder and Mg powder. The desulphurizing powder and straight iron powder are used for playing a pre-dispersion role for desulphurizing powder during ball milling so that the desulphurizing powder is unlikely to agglomerate into large granules and the reaction interface with S is enlarged. The desulphurizing powder and straight iron powder are pressed into blocks for increasing the proportion to facilitate the desulphurizing powder to permeate into the steel fusant to avoid floating into the dregs, thus improving the efficiency of desulphurization. When CaCO3 powder is used as the desulphurizing powder, the decomposed CaO fully contacts with S to generate CaS which is attached to the bubble of CO2, the CO2 floats up while S is removed from the fusant, thus purifying the fusant.

Description

technical field [0001] The invention belongs to the field of iron and steel smelting, and provides a desulfurizing agent for steel or iron making. Background technique [0002] The traditional desulfurizers used in the steelmaking or ironmaking industry are usually CaO powder, CaF powder, Ca powder, magnesium powder or magnesium wire, magnesium block, etc. These desulfurizer materials have light specific gravity, high cost, and are not easy to sink into molten steel or molten iron. , the burning loss is serious, not only the desulfurization efficiency is low, the desulfurization effect is affected, but also the waste of resources is caused. [0003] In order to solve the problem of the light specific gravity of the desulfurizer, many technicians thought of mixing the desulfurizer and iron together by mixed smelting, which played a role in increasing the specific gravity. waste. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to solve the problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/064
Inventor 方克明荣金相周涛
Owner 方克明
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