Recovery gold from sulfide ore and concentrates of enrichment
The paper presents the results of experiments on the leaching of gold from the original ore and ore concentrates from one of the deposits of Kazakhstan. Analyzes found the average gold grade in ore equal to 6,0 and silver 7,9 g/t. In the process of research, the modes were tested out direct cyanidation, with preliminary oxidation, sorption leaching, also as well as options for leaching gold from ore after ultrafine grinding, gravity and flotation concentration. The highest efficiency - 95,59- 99,45%, was noted during oxidative and sorption cyanidation of gravity concentrates. Direct cyani- dation of flotation concentrates obtained from gravity tailings made it possible to recover 92,03%, sorption cyanidation - 94,19%.