PROCESSING METHOD OF COPPER ANODE SLIME Russian patent published in 2017 - IPC C22B7/00 C22B15/00 C22B13/00 C22B30/02 C22B3/12 

FIELD: metallurgy.

SUBSTANCE: method includes antimony and lead leaching from copper anode slime in a solution containing 50-200 g/dm³ of glycerin, 50-100 g/dm³ of alkali and a reducing agent, in an amount that provides the system oxidation-reduction potential more positively than +0.8 V at a temperature of 70-90°C for 2-3 hours. Thus lead from the leach solution is educed by known methods. Antimony is precipitated by electrolysis with an insoluble anode at a cathode current density of 200-300 A/m². As the reducing agent, sugar is used at a concentration in the leach solution of 100-150 g/dm³.

EFFECT: method makes it possible to increase the degree of antimony leaching from the slime by 3-4 times and lead by 1,5-2 times in comparison with known methods.

2 cl, 2 tbl, 1 dwg, 2 ex