Molybdenum News Center

Molybdenum ore beneficiation methods are mainly flotation recovery of molybdenum mineral is molybdenite. Molybdenite crystal hexagonal layered or sheet-like structure along the inter-layer S-Mo-S structure and the inner layer polar Fan Jian S-Mo covalent bond formation. Adhesion between the layers is weak, and the covalent bonding layer is very strong. So molybdenite along the structural layer solution can easily split between flaky or tabular output, which is the natural floatability chalcocite good reason. Practice has proved that: under suitable grinding fineness, pyroxene crystals from solution molybdenite occurs between the S-Mo-S layer, S-Mo surface hydrophilic small percentage. But over the mill, the proportion of S-Mo surface increases, the decline may be floating, although this time the new slime certain amount polarity collectors such as xanthate class conducive Hui recovery molybdenite, but after grinding generated affect flotation effect. So the sorting of molybdenite to avoid and prevent excessive wear on the production requires the use of multi-segmented grinding and sorting process, and gradually achieve monomer dissociation ensure high recovery of molybdenum concentrate. 

 

Molybdenum ore crushing are generally used in closed circuit of a three-stage crushing of the final product particle size of 12 to 15 mm. 

 

Usually grinding mill or rod mill - milling processes. Henderson is the only semi-autogenous grinding process. Flotation using flotation method. Crude output of molybdenum rougher concentrate, crude scavenger tailings recovery associated minerals or discarded. Molybdenum rougher concentrate using two or three paragraphs and then grinding, four or five times to get the final selection of molybdenum concentrate. 

 

Molybdenite flotation reagents in a non-polar oil as collector, while adding a foaming agent. USA and Canada surfactant oct Pentax for oil emulsifier. According to the nature of the ore, lime adjusted agent, sodium silicate as gangue inhibitors, sometimes adding cyanide or sulfide inhibition of other heavy minerals.

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