METHOD OF COPPER-ELECTROLYTE SLIME PROCESSING Russian patent published in 1997 - IPC

FIELD: nonferrous metallurgy. SUBSTANCE: method involves slime leaching and the concentrated sludge washing with reusable sodium chloride hydrochloride containing ammonium chloride at ratio ammonium chloride : hydrochloric acid = 1:(3-5). Then method involves regeneration of the salt solution leaching for two stages . At the first stage antimony concentrate is separated and at the second stage - lead concentrate is isolated. Regeneration products were washed with sodium chloride saturated solution, filtrate is corrected by hydrochloric acid and recovered to the leaching. Method can be used for complex extraction of antimony, arsenic, lead, sulfate sulfur, noble and rare metals. EFFECT: improved method of processing. 2 tbl, 3 cl