PROCEDURE FOR PROCESSING WASTES OF ALUMINIUM PRODUCTION Russian patent published in 2011 - IPC C22B7/04 

FIELD: metallurgy.

SUBSTANCE: procedure consists in heating wastes of aluminium production in reactor and in separation of their oxide and salt component parts by implementation of deduster and bag hose. There are used wastes not contacting moisture. Wastes are heated in the reactor to temperature as high, as 800°C and conditioned to the beginning and completion of alumo-thermal reactions at simultaneous mixing and supply of air into the reactor. Concentrate of metal aluminium is settled in the deduster. Salt component of wastes is settled in the successive bag hose. The procedure can be carried out both in cyclic or continuous modes.

EFFECT: processing slag sifting and gas purification slime containing salts and dispersed aluminium; extraction of dispersed aluminium; reduced power consumption and avoiding complex preparing operations.

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