A vertical high-temperature continuous electric calciner for disposing of electrolytic aluminum waste cathodes

Abstract

The invention relates to the technical field of solid waste high temperature calcining equipment and especially relates to a vertical-type high temperature continuous electrical calciner for treating a waste aluminum electrolysis cathode. The vertical-type high temperature continuous electrical calciner for treating a waste aluminum electrolysis cathode comprises an enclosed calciner body, a self-sealing feeding device and a self-sealing discharge device. The enclosed calciner body comprises a calciner cover and also orderly comprises a calcining chamber, an anticorrosive coating, an insulating layer, a fireproof layer, a heat-insulation layer and a calciner casing from inside to outside. The top of the calciner body is provided with a feeding inlet. The upper end of the calciner body is provided with a channel outlet for discharging high temperature flue gas in the calciner and a flue gas treatment device. A positive electrode and a negative electrode are arranged in the calcining chamber. A tapered electric field for calcining a waste aluminum electrolysis cathode is formed between the positive electrode and the negative electrode. The electrical calciner realizes gasification overflow of a fluoride salt in a waste aluminum electrolysis cathode and separation of the fluoride salt from carbon so that a high quality carbon product is obtained. The electrical calciner has high production efficiency, low energy consumption and good practicality and realizes harmless production.

Description

technical field [0001] The invention relates to the technical field of high-temperature calcination equipment for solid waste, in particular to a vertical high-temperature continuous electric calcination furnace for disposing waste cathodes of electrolytic aluminum, and in particular to a method that can improve product quality and production efficiency and realize harmless treatment A vertical high-temperature continuous electric calciner for disposing of electrolytic aluminum waste cathodes. Background technique [0002] As the production of electrolytic aluminum increases, so does the solid waste generated during the electrolysis process. Among them, the electrolytic aluminum waste cathode is one of the most harmful electrolytic aluminum hazardous solid wastes; the electrolytic aluminum cathode is made of calcined anthracite, metallurgical coke, graphite, etc. Block or paste carbon products with carbon lining in slots. During aluminum electrolysis, the main reaction tha...

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Problems solved by technology

[0012] The purpose of the present invention is to provide a vertical high-temperature continuous electric calciner for disposing waste cathodes of electrolytic aluminum, which can improve product quality and production efficiency and realize harmless treatment, so as to solve the problem of low production efficiency in existing calcining equipment , Unstable product quality and easy to cause environmental pollution

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