According to the characteristics of low hardness of molybdenum mineral and fine grain size, but good floatability, molybdenum ore beneficiation adopts segmental flotation and multiple selected processes. Molybdenum ore beneficiation processes into a single symbiotic containing molybdenum ore beneficiation and ore beneficiation process two types of molybdenum metal.
Single molybdenum ore beneficiation The crude tailings are selected by a closed-circuit grinding process. The coarsely-selected tailings are discharged through 2 to 3 sweeps to discharge the final tailings. After coarse grinding of the concentrates, the molybdenum concentrates are selected (4 to 12 times).
Molybdenum-containing polymetallic symbiotic ore beneficiation According to the optional differences of associated minerals, different beneficiation processes are adopted. The copper- molybdenum symbiotic ore mostly adopts copper-molybdenum mixed flotation, discards a large amount of tailings, and the process of copper and molybdenum separation after mixing the concentrate and re-grinding; molybdenum-tungsten symbiotic ore, associated scheelite ore is preferential flotation, associated with wolframite Flotation-re-election combined process; molybdenum- uranium symbiotic ore generally adopts flotation-water and metallurgy combined process. Flotation is an effective method for recovering molybdenite and separating molybdenum minerals and associated metal minerals. Flotation the hydrocarbon oil (coal oil, transformer oil) as collector, pine oil, xylenol, higher fatty alcohols used as blowing agent. Inhibitors associated with sulfide ore are sodium cyanide, sodium sulfide, and Nokes. When the ore contains Mo 0.09% to 0.3%, the selected molybdenum concentrate grade is 47% to 55%, and the recovery rate is 80% to 90%.
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