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Method for preparing silicon aluminium calcium composite deoxidant

A silicon-alumina-calcium deoxidizer and a production method technology, applied in the field of deoxidizers, can solve the problems of high content of non-metallic impurities, poor fluidity, affecting the performance and service life of steel, and improve the service performance and service life of steel and reduce the content. , the effect of good desulfurization effect

Inactive Publication Date: 2007-10-17
安阳市龙泉华贯冶金厂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this deoxidizer, the fluidity of molten steel is poor, and the content of non-metallic impurities in steel is also high, especially the content of sulfur is also high, which affects the performance and service life of steel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0007] Example 1: Take 70 kilograms of silicon aluminum iron, 26 kilograms of calcium carbide, and 4 kilograms of aluminum powder. Put the calcium carbide in engine oil and soak for 72-80 hours at room temperature to remove, mix with aluminum powder and stir well, then add silicon aluminum Stir the iron evenly.

example 2

[0008] Example 2: Take 50 kilograms of silicon aluminum iron, 44 kilograms of calcium carbide, and 6 kilograms of aluminum powder. Put the calcium carbide in engine oil and soak for 70-80 hours at room temperature to remove, mix with aluminum powder and stir evenly, and then add silicon aluminum Stir the iron evenly.

example 3

[0009] Example 3: Take 31 kilograms of silicon aluminum iron, 61 kilograms of calcium carbide, and 8 kilograms of aluminum powder. Put the calcium carbide in engine oil and soak for 70-80 hours at room temperature to remove it. Mix it with aluminum powder and stir well, then add silicon aluminum Stir the iron evenly.

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Abstract

The deoxidizer for high-grade steel milting comprises: selecting ferro-silico aluminum, Ca2C and aluminum powder with some weight ratio as the material; breaking the ferro-silico aluminum and Ca2C till some size; dipping the Ca2C into organic oil for given time to take out and mix with the aluminum; then adding ferro-silico aluminum to stir evenly. This product has well desulfurization effect to reduce non-metal impurity and change inclusion shape, prolongs steel service performance and time, and can replace traditional product.

Description

1. Technical Field [0001] The invention is a deoxidizer used in the process of smelting high-quality steel. 2. Background technology [0002] At present, most of the deoxidizers used in the deoxidization process of converters, electric furnaces, and ladle refining furnaces are traditional ferrosilicon, aluminum and so on. Using this deoxidizer, the fluidity of molten steel is poor, and the content of non-metallic impurities in the steel is also high, especially the content of sulfur is also high, which affects the performance and service life of the steel. Third, the content of the invention [0003] The purpose of the present invention is to provide a new deoxidizer, which can better meet the requirements of rough deoxidation and steel quality. [0004] The raw materials for the production of the deoxidizer are ferrosilicon, calcium carbide and aluminum powder, and the weight ratios are respectively 30-70%, 25-65% and 4-8%. The production process is to first prepare the prepare...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/06
Inventor 任保贵刘新顺
Owner 安阳市龙泉华贯冶金厂
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