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Method for preparing titanium-aluminum-silicon alloy by carbothermal reduction method

A technology of aluminum alloy and reduction method, which is applied in the field of material science to achieve low raw material cost, reduce environmental pollution, and save energy

Inactive Publication Date: 2008-11-05
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the existing problems in the production of titanium-silicon-aluminum alloys, the present invention provides a method for preparing titanium-silicon-aluminum alloys by carbothermal reduction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Titanium-containing slag is used as raw material, and its main component mass percentage content is TiO 2 22%, SiO 2 23%, Al 2 o 3 13%.

[0027] Mix titanium-containing slag and carbonaceous reducing agent and grind it into a powder with a particle size of less than 1mm. The mixing mass ratio is titanium-containing slag:coke:charcoal=14:3:1; then add binder pulp waste to the powder liquid, put it into the mixer and mix thoroughly, wherein the amount of pulp waste liquid added is 10% of the total mass of the material; after mixing evenly, put the material into the double-roller pelletizer, and press it with a pressure greater than 17MPa to form a ball with a diameter of 30~ Titanium-containing pellets with a thickness of 50 mm; the obtained titanium-containing pellets are dried and dehydrated in a dryer, and the moisture content of the dehydrated titanium-containing pellets is less than 1%.

[0028] The dehydrated titanium-containing pellets, silica, coke and charcoa...

Embodiment 2

[0030] Titanium-containing slag is used as raw material, and its main component mass percentage content is TiO 2 13%, Al 2 o 3 75%.

[0031] Mix titanium-containing slag and carbonaceous reducing agent and grind it into a powder with a particle size of less than 1mm. The mixing mass ratio is titanium-containing slag:coke:charcoal=5:3:1; then add binder pulp waste to the powder liquid, put it into the mixer and mix thoroughly, wherein the amount of pulp waste liquid added is 10% of the total mass of the material; after mixing evenly, put the material into the double-roller pelletizer, and press it with a pressure greater than 17MPa to form a ball with a diameter of 30~ 50mm titanium-containing pellets; the obtained titanium-containing pellets are dried and dehydrated in a dryer, and the moisture content of the dehydrated titanium-containing pellets is less than 1%.

[0032] Put the dehydrated titanium-containing pellets, silica, coke and charcoal into a 63KVA submerged arc f...

Embodiment 3

[0034] A mixture of titanium-containing ore and titanium-containing slag is used as the mixed raw material, and the main component mass percentage of titanium-containing ore is TiO 2 12%, SiO 2 35%, Al 2 o 3 13%, the main component mass percentage of titanium-containing slag is TiO 2 18%, Al 2 o 3 60%.

[0035] Mix the mixed raw material and carbonaceous reducing agent and grind it into a powder with a particle size of less than 1mm. The mixing mass ratio is titanium-containing ore: titanium-containing slag: coke: charcoal = 3:3:2:1; then add Adhesive pulp waste liquid, put it into the mixer and mix thoroughly, wherein the amount of pulp waste liquid added is 10% of the total mass of the material; after mixing evenly, put the material into the double-roller pelletizer, and press it with a pressure greater than 17MPa. Titanium-containing pellets with a ball diameter of 30-50mm; the obtained titanium-containing pellets are dried and dehydrated in a dryer, and the moisture ...

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Abstract

The invention relates to a method for preparing an alloy of titanium, silicon and aluminum by using the carbothermy reduction method, and is characterized in that titaniferous slag, titaniferous ore or mixture of the titaniferous slag and the titaniferous ore are taken as raw titaniferous materials, and a carbonaceous reducing agent is added for mixing and milling; a caking agent is added for mixing, and titaniferous pellets are prepared and parched; the titaniferous pellets, silicon ore and the carbonaceous reducing agent are mixed according to a proportion that is required by a finished product so as to prepare charging materials; the prepared charging materials are placed into an ore-bearing electric arc furnace for smelting, thus obtaining the finished alloy product of titanium, silicon and aluminum. The method for preparing the alloy of titanium, silicon and aluminum by using the carbothermy reduction method uses titaniferous waste slag or gangue, adopts the carbothermy reduction method for directly preparing the alloy of titanium, silicon and aluminum in the ore-bearing electric arc furnace, thus lowering production cost and energy consumption, and having important meaning to the comprehensive utilization of the titaniferous slag and the titaniferous ore.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a method for preparing titanium-silicon-aluminum alloy by a carbothermal reduction method. Background technique [0002] Titanium-silicon-aluminum multi-element alloy is a new type of cast aluminum alloy with good casting process performance and high strength. The traditional method of producing titanium-silicon-aluminum multi-element alloy is to adopt melting preparation and casting, that is, blending method. Fusion into titanium silicon aluminum alloy. The smelting of the pure metals required by the fusion method requires a complicated smelting process and consumes a lot of energy. In order to produce pure aluminum, it is necessary to go through a complex process and consume a huge amount of energy to remove impurities such as silicon and titanium in the aluminum ore to obtain pure alumina, which is then electrolyzed with molten salt to obtain pure aluminum. In or...

Claims

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Application Information

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IPC IPC(8): C22B21/02C22B5/10
Inventor 邢鹏飞涂赣峰庄艳歆吴文远孙树臣高波边雪
Owner NORTHEASTERN UNIV
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