一种电解铝阳极用抗氧化涂料、涂层及电解铝阳极

By using an antioxidant coating with specific components on the electrolytic aluminum anode, the problem of high anode consumption was solved, the coating density and stability were achieved, the anode service life was extended, carbon consumption was reduced, and the stability and efficiency of the electrolytic cell were improved.

CN118620427BActive Publication Date: 2026-07-17ZHENGZHOU NON FERROUS METALS RES INST CO LTD OF CHALCO

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU NON FERROUS METALS RES INST CO LTD OF CHALCO
Filing Date
2024-06-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the consumption of anodes in electrolytic aluminum is relatively high, which affects production costs and the stable operation of electrolytic cells. Furthermore, existing methods are not effective in extending anode life and reducing carbon consumption.

Method used

An antioxidant coating composed of a specific ratio of high-temperature resistant inorganic nanocomposite binder, silicate mineral binder, framework-structured silicate and alumina powder, through rational component design, forms a dense coating, which improves adhesion, wettability and thermal shock resistance, and prevents the coating from cracking and peeling off in high-temperature environments.

Benefits of technology

It significantly reduces the additional consumption of electrolytic aluminum anodes, extends the anode service life, improves the anti-oxidation and anti-corrosion effect, reduces carbon consumption, extends the anode replacement cycle by at least 1.5 days, and maintains the density and stability of the coating.

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Abstract

本发明提供了一种电解铝阳极用抗氧化涂料、涂层及电解铝阳极,属于涂料领域。以质量分数计,所述抗氧化涂料的组分包括:耐高温无机纳米复合粘结剂:25%~41%,硅酸盐矿粘合剂:7%~20%,架状结构硅酸盐:15%~30%,氧化铝粉末:16%~40%。本申请合理设计抗氧化涂料的组分。采用耐高温无机纳米复合粘结剂能形成致密的涂层,防护效果显著;通过硅酸盐矿粘合剂的添加,可有效提高涂料在阳极表面的润湿性及黏附性;采用架状结构硅酸盐,有效的起到涂层的抗氧化防腐蚀作用。采用氧化铝粉末,保证涂层的耐热性,同时在高温环境中还能体现出很好的致密性和韧性。从而减少了电解铝阳极在使用过程中的额外消耗。
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