Abstract:Aiming at the problems of high tailing loss and low mixed flotation recovery rate on the site of a certain porphyry copper-molybdenum mine in Tibet, based on the research of ore properties, the optimization study of beneficiation process was carried out and the process flow was transformed. The results indicate that for the raw ore containing 0.69% copper and 0.039% molybdenum, by employing the new high-efficiency copper-molybdenum collectors BK404C and BK345A, the original process flow of “rapid flotation-one rougher flotation-two scavenger flotation-rapid flotation+two cleaner flotation of rougher concentrate” was modified into the new process flow of “copper-molybdenum iso-flotation-copper intensified flotation-two scavenger flotation-one cleaner flotation of copper-molybdenum iso-flotation rougher concentrate-two cleaner flotation of copper intensified flotation rougher concentrate”. The whole-process closed-circuit test achieved favorable indexes of copper-molybdenum mixed concentrate. After the applicat