Xinhai had undertaken the mineral processing test work and study on gold ore in Kazakhstan, aiming to determine the optimal technological processes and indexes, and provide scientific and reasonable basis for the process design and future production.
The Au grade of raw ore was 1.1g/t. The gold particle was fine and mostly distributes in fine fraction of ore. Xinhai had carried out a comparative test of single flotation, all-slime cyanidation, heap leaching and flotation concentrate cyanidation according to the characteristics of the ore, and scientifically analyzed the flow structures, mineral processing indexes and corresponding equipment configurations of the four programs based on the test results. Combined with the actual mining area conditions and the client' needs, Xinhai advised the client to adopt the all-slime cyanidation process. When -200 mesh of raw ore grinding fineness accounted for 85.63%, the rate of gold leaching could reach 90.91% ~ 91.82% through cyanide leaching.