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Process for preparing low phosphorus and low carbon aluminium-silicon-manganese-iron alloy

A technology of silicon-manganese-ferroalloy and low-carbon aluminum, which is applied in the field of preparation of low-phosphorus and low-carbon aluminum-silicon-manganese-ferroalloy

Inactive Publication Date: 2006-02-08
常州市兴昌盛合金制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alloy can overcome the problem of excessive phosphorus and carbon content in existing alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Embodiment: (feed intake 500kg)

[0017] Add 44kg of clean steel scrap containing C=0.05% into the intermediate frequency furnace, and add 30kg of calcium-based dephosphorization agent at the same time, its chemical composition is: Ca 26.8% Si 54.2% C 0.82% Al 2.4% P 0.03% S0.04% balance Be Fe, and the silicon-manganese alloy 300kg that the brand is FeMn68Si18 (its composition is: Mn 67.5% Si 17.2% C 1.68% P 0.23% S 0.03%) is melted, and melting temperature is 1348 ℃, then adds 8kg fluorite powder and adjusts slag, after the slag is fully diluted, add a slag remover iron oxide scale (Fe 2 o 3 ) 1kg, the slag is oxidized into harmless substances and then taken out of the furnace. Sampling analysis of C, P content. After passing the test, increase the power, and then add 110kg of manganese metal with a manganese content of 99.6% and 46kg of remelted aluminum for pop cans containing 94.8% of aluminum into the furnace one by one for melting. In the mold, after condensat...

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PUM

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Abstract

The present invention relates to ferroalloy. The low-phosphorus and low-carbon Al-Si-Mn ferroalloy is produced with aluminium and common silicomanganese in certain proportion and through adding proper amount of Ca-Ba dephosphorizing agent for high temperature dephosphorizing and decarbonizing and adding proper amount of pure aluminum and clean waste steel. It has the weight composition of: Al 5-20 wt%, Si 8-20 wt%, Mn 50-70 wt%, C less than 1.0 wt%, S less than 0.03 wt% other than Fe.

Description

technical field [0001] The invention relates to a method for preparing a low-phosphorus and low-carbon aluminum-silicon-manganese-ferro alloy, which belongs to the technical field of ferroalloys. Background technique [0002] With the rapid development of the steel industry, high-quality, high value-added varieties have increased significantly. The carbon, phosphorus and other components in the variety steel are required to be strictly controlled. In order to meet the requirements of iron and steel enterprises to produce high-quality varieties of steel and the development trend of the current iron and steel industry, China needs a special dephosphorization process that can control the elements such as carbon and phosphorus in the alloy to a minimum. Contents of the invention [0003] The object of the present invention is to provide a method for preparing a low-phosphorus and low-carbon aluminum-silicon-manganese-ferroalloy. The alloy can overcome the problems of excessi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C22/00C22C1/02
Inventor 盛国大
Owner 常州市兴昌盛合金制品有限公司