Variants of processing molybdenite concentrates involving the use of preliminary mechanical activation

A review of possible ways to process molybdenite concentrates of various grades by both pyrometallurgical and hydrometallurgical methods is given and the most rational are noted. Prospects for processing low-grade molybdenum raw materials by nitric acid autoclave-less leaching with the complete transfer of molybdenum into the solution in the composition of sulfate complexes is shown. The variant that intensifies the nitric acid leaching of low-grade (6–17% Mo) concentrates obtained by the flotation of ores of the Bugdainskoe deposit via their preliminary dry mechanical activation is suggested.