Aluminum oxide recycling and material jam treatment method of electrolytic aluminum flue gas purification system

Abstract

The invention relates to an aluminum oxide recycling and material jam treatment method of an electrolytic aluminum flue gas purification system. The possible material jam and leakage problems as well as the environmental factors of the electrolytic aluminum flue gas purification system are fully considered; negative-pressure dust collection is adopted to recycle aluminum oxide, the aluminum oxide is delivered into a cage-shaped material separation device arranged in the flue of the electrolytic flue gas purification system; the negative pressure of the flue of the electrolytic flue gas purification system performs winnowing separation on the material which is thrown from top to bottom; and the aluminum oxide and small particles of aluminum oxide are separated from the flue, then enter the electrolytic flue gas purification system and is recycled by a deduster before entering a production cycle. The method has the following advantages: the process flow is short, on-site recycling and on-site separation are realized, the recycled material is switch to production cycle on site; the power is high, the efficiency is high, the working environment of workers can be greatly improved, and the labor intensity can be reduced; the antimagnetic design is improved, and reliable operation in a strong magnetic field environment can be ensured; and due to the remote control opening and closing design, the labor intensity of the workers is reduced, and the method is safer.

Description

1. Technical field [0001] The invention relates to an alumina recovery and blocking material treatment method of a flue gas purification system in the electrolytic aluminum industry, and belongs to the technical field of material negative pressure recovery. 2. Background technology [0002] By the end of 2010, the electrolytic aluminum production capacity of the domestic aluminum industry had reached more than 20 million tons. An electrolytic aluminum plant with a production capacity of 300,000 tons generally needs to design 4 sets of electrolytic aluminum flue gas dry purification systems. Each set of flue gas dry purification system mainly designs about 20 pulse bag filter, 1 alumina fluorine-carrying silo, A fresh silo, an alumina storage silo and alumina super-dense phase chute and other equipment and facilities. [0003] The common faults of the electrolytic aluminum flue gas purification system and the commonly used treatment methods in the industry are as follows: ...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to fully consider the problems of material blocking and leakage that may be encountered in the electrolytic aluminum flue gas purification system and environmental factors, and utilize the favorable conditions of the electrolytic flue gas purification

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