Preparation of pyrite-arsenopyrite concentrate for gold leaching through the use of polyreagent complexes

Increasing gold leaching efficiency with change of solution rheological properties

“…Laboratory studies on the effect of activation before metal leaching prove the effectiveness of the proposed unconvention al methods for opening the mineral matrix. The increase in gold extraction after the combined sulfide and arsenopyrite oxida tion technology was 18 %, and the duration of biooxidation during the preliminary photoelectrochemical oxidation before leaching was reduced approximatively by 2 times [10,11].…”

“…The processing of experimental data using mathematical statistics methods resulted in equations characterizing the de pendence of the oxidation state of sulfide miners and sulfide sulfur on the values of the parameters of metallurgical proper ties. Based on experimental data obtained during laboratory studies on refractory mineral raw materials using twostage oxidation before leaching, the empirical formula for the de pendence of gold extraction on geological, mineralogical, and technological parameters was obtained [10].…”