METHOD OF SEPARATION AND EXTRACTION OF NICKEL, COBALT AND COPPER FROM SULFIDE FLOATATION CONCENTRATE STIMULATED BY CHLORINE THROUGH OXIDIZING LEACHING WITH SULFURIC ACID UNDER PRESSURE

摘要

FIELD: hydrometallurgy; extraction of valuable components of nickel, cobalt and copper from sulfide floatation concentrate. SUBSTANCE: proposed method includes stages of production of suspension of floatation concentrate in sulfuric acid; suspended floatation concentrate is subjected to leaching with use of chlorine at atmospheric pressure followed by and elevated temperature in acid medium. After separation of liquid and solid agents and cleaning and removal of cobalt, solution containing nickel is subjected to electrolysis for extraction of cathode nickel from it. EFFECT: enhanced efficiency; reduction of time required for performing process and number of technological stages. 17 cl, 3 dwg, 4 tbl, 4 ex