Abstract: Valuable mineral composition and grain size characteristics of a molybdenum mine in Jiangxi province were analyzed, suitable grinding fineness of flotation separation, suitable dosage of kerosene as collector and pine camphor oil as frother of rough flotation, dosage of Na2S as inhibitor of one concentrating, dosage of kerosene as collector and pine camphor oil as frother of one time scavenging of this mineral were confirmed through test, and test was done on one roughing, one scavenging, six times concentration close circuits which confirmed in searching test, molybdenum concentrates with molybdenum grade 45.23% and recovery rate 85.14% were obtained.

Key words: Molybdenite, Grinding fineness, Flotation, Process