High-temperature continuous treatment method for treating electrolytic aluminum waste cathodes

Abstract

The invention relates to the technical field of solid waste treatment, in particular to a high-temperature continuous treatment method for treating electrolytic aluminum waste cathodes. The high-temperature continuous treatment method for treating the electrolytic aluminum waste cathodes comprises the following steps: (S1) electrolytic aluminum waste cathode carbon blocks are crushed to obtain electrolytic aluminum waste cathode particles; (S2) the electrolytic aluminum waste cathode particles are kneaded with asphalt, or electrolytic aluminum waste anode particles are mixed with calcined petroleum coke particles to obtain a mixture; (S3) the mixture is calcined at high temperature to obtain high-temperature smoke and electrolytic aluminum waste cathode carbon particles; (S4) the high-temperature smoke is treated by a recrudescence chamber, a cooling chamber and a smoke capturing device in sequence to obtain fluoride salt; and (S5) the electrolytic aluminum waste cathode carbon particles are cooled to obtain carbon products. The treatment method is convenient for operation, low in energy consumption and cost, realizes harmless treatment, and effectively improves the treatment efficiency and the resourceful utilization efficiency.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a high-temperature continuous treatment method for disposing of electrolytic aluminum waste cathodes, in particular to a method with low energy consumption, low cost, thorough harmless treatment and effective improvement of electrolytic aluminum waste A high-temperature continuous treatment method for the disposal of electrolytic aluminum waste cathodes for the treatment efficiency and resource utilization efficiency of cathode carbon blocks. Background technique [0002] The electrolytic aluminum cathode is made of calcined anthracite, metallurgical coke, graphite, etc. as aggregates, and coal tar pitch and other binders. It is mainly used to make block or paste carbon products for the carbon lining of aluminum electrolytic cells. During the aluminum electrolysis process, the main reaction on the cathode is that the Al3+ melted in the cryolite (Na2AIFeNa2AIF6) is r...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a high-temperature continuous process for disposing waste cathodes of electrolytic aluminum, which has low energy consumption, low cost, thorough harmless treatment, and can effectively improve the treatment efficiency and resource utilization efficiency of electrolytic aluminum waste cathode carbon blocks. In order to solve the problems of high cost, high energy consumption and inability to achieve harmless and thorough treatment in the existing electrolytic aluminum waste cathode carbon block treatment method

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