Treatment method of electrolytic aluminum

Abstract

The invention relates to a treatment method of electrolytic aluminum. The treatment method comprises the following steps: S1, crushing and mixing with a catalyst; to-be-treated electrolytic aluminum is crushed through a crusher and is mixed with a catalyst in a catalyst storage tank in the crushing process; s2, oxidizing and calcining; the electrolytic aluminum mixed with the catalyst obtained in the step S1 is subjected to oxidation calcination, and a residual product obtained after oxidation calcination is a recycled electrolyte product; the structural design of an existing crusher and an existing catalyst storage tank is changed, the improved crusher and the improved catalyst storage tank can achieve the effect of circularly adding a catalyst in the electrolytic aluminum crushing process, in this way, waste of the catalyst in the using process can be avoided, meanwhile, in the adding process, waste of the catalyst is avoided, and the service life of the catalyst is prolonged. And full contact with crushed materials can be realized, so that a better catalytic effect is realized.

Description

technical field [0001] The invention relates to the technical field of electrolytic aluminum, in particular to a treatment method for electrolytic aluminum. Background technique [0002] Electrolytic aluminum carbon-containing hazardous waste includes carbon slag, spent cathode carbon blocks (including carbon materials such as tamping paste, side carbon blocks), residual electrode cleaning materials, and overhaul slag, etc., because they contain toxic substances such as soluble fluoride Included in the "National Hazardous Waste List" - HW48 Non-ferrous metal smelting waste - salt slag and scum produced in the process of electrolytic aluminum. Carbon slag, in the production process of electrolytic aluminum, due to various reasons such as long-term erosion and washing of electrolyte, uneven combustion, selective oxidation, and unqualified quality, the anode carbon block and cathode carbon block cause carbon particles to fall off, in the electrolytic cell Carbon slag is formed...

AI Technical Summary

Problems solved by technology

[0003] During the electrolytic aluminum process, crushing is required, and catalysts are added during the crushing process. However, in the process of adding existing catalysts, in order to ensure the best catalytic effect, it is often necessary to add an excessive amount of catalysts, which causes waste.

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