A kind of preparation method of aluminum-iron-vanadium-silicon alloy

A silicon alloy, aluminum-iron technology, applied in the field of aluminum-silicon overhaul slag reuse, can solve the problems of expensive raw materials, complex production process of vanadium-aluminum-iron alloy, high production cost, etc., achieve high purity, reduce anode consumption, and protect anodic oxidation Effect

Active Publication Date: 2021-03-23
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The production process of this vanadium-aluminum-iron alloy is complicated, the raw materials are expensive, and the production cost is high.

Method used

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  • A kind of preparation method of aluminum-iron-vanadium-silicon alloy
  • A kind of preparation method of aluminum-iron-vanadium-silicon alloy
  • A kind of preparation method of aluminum-iron-vanadium-silicon alloy

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preparation example Construction

[0023] In view of the reuse of aluminum-silicon overhaul slag in the prior art, this application provides a method for preparing an aluminum-iron-vanadium-silicon alloy. The aluminum-iron-vanadium-silicon alloy prepared by electrolysis has high purity, low impurity content, and chemical High stability. On the other hand, using the electrolytic cell in the aluminum electrolysis plant as the electrolytic reaction cell does not require excessive capital investment in equipment, and the electrolysis technology is mature, which solves the problem of fluoride and cyanide in the solid waste of overhaul slag in the aluminum electrolysis industry To solve the pollution problem of chemical compounds, the harmless treatment, reduction treatment and recycling treatment of the waste lining of the aluminum electrolytic cell have been realized, and the obtained aluminum-iron-vanadium-silicon alloy is a high-value product, which has good feasibility and economy. Specifically, the preparation m...

Embodiment 1

[0042] Take the aluminum-silicon solid waste in the lining of the waste tank for crushing to obtain solid waste crushed material with a particle size of ≤0.15mm, and take converter steel slag for crushing and grinding to make powder, with a particle size of ≤02mm; the ground aluminum-silicon crushed material , alumina powder and steel slag powder are mixed in a mixing box according to a certain ratio to obtain a mixture; the Al content in the aluminosilicate overhaul slag is 16.2wt%, the Si content is 12.41wt%, and the Fe content is 3.56wt% The Fe content of the steel slag powder is 20wt%, the vanadium content is 3wt%, the weight percent content of aluminum and silicon solid waste in the mixture is 5%, the quality of the steel slag powder is 17% of the mixture quality, and alumina is the balance ;

[0043] Add the above mixture into the electrolytic cell for electrolysis. The working voltage of the electrolytic cell is 4.028V, the electrolysis temperature is 903°C, and the cur...

Embodiment 2

[0045] Take the aluminum-silicon solid waste in the lining of the waste tank for crushing to obtain solid waste crushed material with a particle size of ≤0.15mm, and take converter steel slag for crushing and grinding to make powder, with a particle size of ≤02mm; the ground aluminum-silicon crushed material , alumina powder and steel slag powder are mixed in a mixing box according to a certain ratio to obtain a mixture; the Al content in the aluminosilicate overhaul slag is 16.2wt%, the Si content is 12.41wt%, and the Fe content is 3.56wt% ; The Fe content in the steel slag powder is 20wt%, the vanadium content is 3wt%, and the weight percent content of aluminum and silicon solid waste in the mixture is 17%; the quality of the steel slag powder is 17% of the mixture quality, and the alumina quantity;

[0046] Add the above mixture into the electrolytic cell for electrolysis. The working voltage of the electrolytic cell is 4.069V, the electrolysis temperature is 924°C, and the...

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Abstract

The invention provides a preparation method of an aluminum-iron-vanadium-silicon alloy. The preparation method comprises the following steps: A) crushing aluminum-silicon overhaul slag to obtain a crushed material, wherein the content of aluminum in the crushed material is 15wt%-20wt%, the content of silicon is 10wt%-15wt%, and the content of iron is less than or equal to 5wt%; and B) mixing steelslag, aluminum oxide and the crushed material, and then feeding the mixture into an electrolytic cell for electrolysis to obtain the aluminum-iron-vanadium-silicon alloy. The aluminum-iron-vanadium-silicon alloy is prepared by using an electrolysis method, the aluminum-iron-vanadium-silicon alloy with more stable chemical properties and higher purity is obtained by the method, and the aluminum-iron-vanadium-silicon alloy is prepared by using overhaul slag solid wastes which are generated in the electrolytic aluminum industry and are harmful to the environment, so that the environmental problem of solid waste stockpiling is solved, the solid wastes are reused, and direct economic values are brought.

Description

technical field [0001] The invention relates to the technical field of recycling aluminum-silicon overhaul slag, in particular to a method for preparing an aluminum-iron-vanadium-silicon alloy. Background technique [0002] my country is a big aluminum manufacturing country, and the output of alumina and electrolytic aluminum accounts for more than 40% of the world. High-quality bauxite resources are relatively scarce, which is far from meeting the development needs of my country's aluminum industry. More than 50% of bauxite needs to be imported, which seriously restricts the development of my country's aluminum industry. Therefore, actively exploring non-traditional aluminum minerals to produce metal aluminum and developing new aluminum smelting methods is of great significance for increasing the supply of domestic aluminum resources and promoting the sustainable development of the aluminum industry. [0003] With the continuous improvement of national environmental protec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/36C25C7/06C22C21/02C22C21/00
CPCC22C21/00C22C21/02C25C3/36C25C7/06
Inventor 李贺松侯文渊崔同尧冯源孙盛林王教儒
Owner CENT SOUTH UNIV
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