Method for recycling byproducts generated in aluminum electrolysis

Abstract

The invention discloses a method for recycling byproducts generated in aluminum electrolysis, and relates to a method for recycling byproducts such as shell surface materials, recycled aluminum dirty materials, aluminum ash and the like in the aluminum electrolysis production process. The method is characterized by comprising the following steps of: collecting the byproducts generated in the process of electrolyzing aluminum, screening, mixing and crushing, and gathering in a storage silo; and when an anode is replaced during aluminum electrolysis, lifting materials in the silo on the ground, conveying into a feeding bin of an electrolyzer through a pipe, and automatically feeding to cover the surface of the anode. In the method for recycling the byproducts generated in aluminum electrolysis, the byproducts such as the shell surface materials, recycled aluminum dirty materials, aluminum ash and the like generated in the aluminum electrolysis process are all recycled, and problems of high cost, high labor intensity, long working hours, high thermal loss of the electrolyzer, low environmental sanitation and the like in the adding process are solved. The technical economical indexes of the system are obviously improved, and the aims of zero emission of the byproducts of the aluminum electrolysis and energy conservation and consumption reduction are fulfilled.

Description

technical field [0001] A method for recycling by-products of aluminum electrolysis production relates to a method for recycling and reuse of by-products such as shell fabrics, recovered alumina dirty material, aluminum ash and the like in the process of aluminum electrolysis production. Background technique [0002] In the aluminum electrolysis process, a large amount of aluminum electrolysis by-products such as shell fabrics, recycled alumina dirt, and cast aluminum ash will be produced. After screening, mixing, and crushing such by-products, they will cover the anode surface during the replacement of the anode. Effectively curb and improve the generation and discharge of by-products of electrolytic aluminum. [0003] At present, electrolytic aluminum production enterprises are mainly committed to the control and treatment of pollutants generated and discharged at the front end of electrolytic aluminum production, but the level of recycling of by-products in the electrolyti...

AI Technical Summary

Problems solved by technology

[0003] At present, electrolytic aluminum production enterprises are mainly committed to the control and treatment of pollutants generated and discharged at the front end of electrolytic aluminum production, but the level of recycling of by-products in the electrolytic production process is relatively backward. Most enterprises use artificial addition methods, resulting in recycling. Rising costs, high labor intensity, long working hours, high heat loss in the electrolyzer, and poor sanitation

Some companies use crushed material mixed into the alumina dense-phase conveying system to add together. However, due to the difference in composition, particle size, and specific gravity between alumina and crushed material, the alumina dense-phase conveying system is blocked by material accumulation, and frequent failures affect the supply system. Stability, accelerated system wear