A feeder for ultra-fine or low bulk density powder in an aluminum electrolytic cell and a feeder method thereof

Abstract

The invention belongs to the technical field of metallurgical industry, and in particular relates to an aluminum electrolytic cell ultra-fine or low bulk density powder feeder, comprising a shell, a first compression device, a second compression device and a discharge pot; the inner cavity of the shell is opened There is a cavity communicating with the outside, a feed port is opened on the side wall of the housing, the top of the first piston is fixedly connected to the other end of the first driving rod; the second piston is connected to the second A compression chamber is formed between the piston rods, the side wall of the compression chamber is provided with a compressed air inlet, and the bottom of the discharge pot is provided with a diversion groove connected thereto. Compress the volume of the material, and use compressed air to discharge the material from the diversion tank to the electrolytic cell at a certain initial speed, which can effectively reduce the flying loss of ultra-fine powder and materials with low bulk density, and improve the effectiveness of feeding. Simple and reliable, good sealing, easy maintenance, can adapt to long hours of work.

Description

Technical field [0001] The present invention belongs to the technical field of metallurgical industries, and more particularly to an aluminum electrolytic tank ultrafine or low capacitive powder or a method of sheeting thereof. Background technique [0002] Aluminum electrolysis is a high energy industry, and a large amount of electrical energy needs to be consumed during alumina electrolysis, and the temperature required for electrolysis is maintained by the heat generated by the current. In the aluminum electrolysis process, alumina is added to the aluminum electrolytic cell, complete dissolution, diffusion and transportation; [0003] During the existing aluminum electrolysis, when the amount of material having an electrolysis is required to be less than 40 μm, the material is a super fine powder, and the ultrafine powder comprises: alumina powder, fluorinated aluminum powder, fly ash or the like. After the fine powder of less than 40 μm is discharged from the lower plate, it ...

AI Technical Summary

Problems solved by technology

After the fine powder less than 40μm is discharged from the feeder, a large amount of floating dust will be generated in the air. These floating dust not only lead to the deterioration of the production workshop environment, but also cause the scattered and floating alumina particles to be unable to be accurately fed into the feeding port.

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