METHOD AND DEVICE FOR MELTING COPPER WITH COMPLEX PROCESSING OF SLAG Russian patent published in 2021 - IPC C22B7/04 C22B5/16 F27B1/02 F27B3/04 F27B7/04 

FIELD: metallurgy.

SUBSTANCE: group of inventions relates to pyrometallurgy, particularly to copper smelting with complex processing of slag. Proposed method comprises full-cycle (FC) furnace. FC furnace (30) includes a cavity in which the reducing evaporation chamber (31) and precipitation chamber (32) are interconnected. Step of extraction of valuable metals contained in melting slag involves reduction evaporation treatment of melting slag in reducing evaporating chamber (31) to obtain aerosol of precious metals and reduced slag, and settling treatment of reclaimed slag in precipitation chamber (32) to obtain copper matte and depleted slag. In another embodiment - settling treatment of melting slag in precipitation chamber (32) to obtain copper matte and precipitated slag and reducing evaporation treatment of precipitated slag in reducing evaporating chamber (31) to obtain an aerosol of valuable metals and lean slag.

EFFECT: invention enables to efficiently extract precious metals and considerably simplifies the method of copper melting.

13 cl, 5 dwg