METHOD OF EXTRACTING COPPER FROM WASTE WATER Russian patent published in 2024 - IPC C22B3/46 C22B15/00 C22B7/00 C02F103/16 

FIELD: metallurgy.

SUBSTANCE: invention relates to non-ferrous metallurgy, particularly to processing waste water from mining enterprises for extraction of copper. Method involves cementation of copper by passing waste water through a column-type cementing machine with iron-containing material loaded as a metal cementing agent. Concentration of copper in waste water ranges from 50 mg/dm³ to 5 g/dm³, iron-containing material used is direct reduction iron in form of pellets with particle size of 5 mm to 30 mm and provide duration of contact of solid and liquid phases from 1 to 10 minutes.

EFFECT: increased extraction of copper from waste water up to 90–96% and obtaining of cement sediment with copper content of not less than 50%.

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