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Direct Al-Si-Fe alloy smelting process in ore smelting furnace

A production method and submerged arc furnace technology, applied in the field of aluminum alloy smelting and production, can solve the problems of difficult waste stacking, heavy pollution, land occupation, etc., and achieve the effects of low production cost, improved environment, and increased resource utilization

Active Publication Date: 2007-01-03
GUIZHOU BRANCH CHINA ALUMINUM IND
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Problems solved by technology

[0003] The object of the present invention is to provide a method for directly smelting aluminum, silicon, and ferroalloys in submerged arc furnaces, to produce aluminum, silicon, and ferroalloys from waste produced in alumina plants, aluminum electrolysis plants, and thermal power plants, so as to solve the problem of waste stacking difficulties and occupation Land, pollution and other problems, the Al-Si-Fe alloy can be used as steelmaking deoxidizer and special alloy additive

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  • Direct Al-Si-Fe alloy smelting process in ore smelting furnace

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Embodiment Construction

[0016] Embodiments of the invention:

[0017] According to the needs of users, the main components of alloy products to be smelted are: Al 37-40%, Si 25-30%, Fe 20-25%, and other 10%.

[0018] The main components of the raw materials used are:

[0019] 1. Bayer Red Mud Al 2 o 3 27%, SiO 2 16%, Fe 2 o 3 8.33%.

[0020] 2. Fly ash Al 2 o 3 18%, SiO 2 45%, Fe 2 o 3 7%.

[0021] 3. Planer cathode carbon block Al 2 o 3 4.551%, SiO 2 0.784%, C 66.591%.

[0022] 4. The aluminum-silicon ratio of clay ore is 1.1.

[0023] 5. The aluminum-silicon ratio of bauxite is 8.

[0024] Calculate the main raw material formula required: Bayer red mud 25%, fly ash 10%, clay ore 12%, bauxite 8%, iron filings 10%, planer cathode carbon block 22%, coke 5%, Charcoal 5%, wood chips 3%.

[0025] Then follow these steps:

[0026] 1. After the Bayer red mud, fly ash, clay ore, bauxite and planer cathode carbon block and coke are roughly crushed and finely crushed, weigh accordi...

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Abstract

The direct Al-Si-Fe alloy smelting process in ore smelting furnace with red mud from Bayer process alumina producing process and fly ash from power plant as main material, waste cathode carbon block from aluminum electrolysis plant as reductant, clay ore as adhesive, and added bauxite, iron chips, coke, charcoal and wood dust, includes the steps of: crushing, compounding material, mixing, palletizing, drying, heating directly in ore smelting furnace, and reducing under the arc produced high temperature of 2300-2350 deg.c to obtain Al-Si-Fe alloy. Compared with available technology, the present invention has the advantages of waste utilization, low cost, environment friendship and raising resource utilization.

Description

Technical field: [0001] The invention belongs to an aluminum alloy smelting production method. technical background: [0002] Commonly used aluminum, silicon, and ferroalloy production is usually to produce pure aluminum ingots by electrolysis, and after remelting, ferrosilicon, titanium, calcium, etc. are added to form aluminum, silicon, and ferroalloys; this method is extremely expensive to produce and consumes Can also be high. There are methods of directly producing AlSi-Fe alloy by electrothermal reduction in foreign countries, but these methods use bauxite as raw material and carbonaceous material as reducing agent for production, and the production cost is also very high. At present, there is no use of waste produced by alumina-Bayer red mud, waste produced by thermal power plants-fly ash as raw material and waste produced by aluminum electrolysis-planing furnace cathode carbon block as reducing agent to produce aluminum, silicon, and iron alloys reports. The dispo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C30/00
Inventor 罗跃辉项阳黄晓强雷波崔鲁川张晓敏
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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