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Aluminum electrolysis inert anode

An inert anode, aluminum electrolysis technology, applied in the field of aluminum electrolysis, can solve the problems of difficult connection, poor thermal shock resistance of cermet inert anode, insufficient corrosion resistance, etc., and achieves the effect of easy connection, avoiding large consumption and good processing performance.

Inactive Publication Date: 2014-04-30
FUJIAN UNIV OF TECH
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an inert anode for aluminum electrolysis, which solves the problems of insufficient corrosion resistance of traditional alloy inert anodes, poor thermal shock resistance of cermet inert anodes, and difficulty in connection.

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  • Aluminum electrolysis inert anode

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Embodiment Construction

[0021] See figure 1 As shown, the present invention will be described in detail below.

[0022] The present invention adopts high-entropy alloy to prepare aluminum electrolysis inert anode, and designs high-entropy alloy composition design, alloy melting and processing, and aluminum electrolysis. The specific implementation steps are as follows:

[0023] 1. High-entropy alloy composition design: The chemical composition is designed according to the high-entropy alloy composition design principle and converted into mass percentage. The high-entropy alloy inert anode material contains at least 5 elements of Fe, Cr, Ni, Co, Cu, Al, Mo, Nb, Mn, Ti, V, Zr, and Ta, and the molar ratio of each alloy element can be the same, It can also be different. If different, the atomic ratio of each element is between 5%-35%. In order to further adjust or improve performance, non-metal or semi-metal elements C, B, and Si can be added. If the composition of the alloy is AlFeCoCrNi, Al 0.5 FeCoCrNi...

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Abstract

The invention provides an aluminum electrolysis inert anode of which the material is a high-entropy alloy. The high-entropy alloy contains 5-10 alloy elements of which the mole ratio can be identical or different; and the atomic percent of each main element is 5-35%. The high-entropy alloy inert anode has the characteristics of favorable high-temperature oxidation resistance, high aluminum electrolysis salt corrosion resistance, high electric conductivity and the like. The high-entropy alloy prepared by the smelting method has the advantages of simple technique and low cost, and is easy for connection. When being used for aluminum electrolysis, the high-entropy alloy can avoid the consumption of the carbon anode and the emission of the CO2 gas, and has the advantages of energy saving and emission reduction.

Description

Technical field [0001] The invention belongs to the technical field of aluminum electrolysis, and relates to an aluminum electrolysis inert anode, in particular to an inert anode material prepared by using a high-entropy alloy. Background technique [0002] The production of primary aluminum has always adopted the Hall-Hérout method. The carbon anode is continuously consumed in the reaction process and the greenhouse gas CO is emitted. 2 And carcinogenic fluorocarbons. The aluminum electrolysis industry is a major energy consuming and emission producer, causing serious environmental pollution and facing severe challenges in energy conservation and emission reduction. [0003] The gas produced by the reaction when an inert anode is used in aluminum electrolysis is oxygen. Not only will it not pollute the environment, but it can also be used as a by-product. Since the invention of the Hall-Hérout method, people have been exploring inert anodes, but little progress was made before t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/12
Inventor 戴品强唐群华洪丽华田君马立安
Owner FUJIAN UNIV OF TECH
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