Molybdenum ore beneficiation maily use flotation method. If you need the election Kuangkuang of the relevant processes , can choose my company's flotation separator. The recovery of molybdenum mineral is molybdenite.
The molybdenite is easily along the structural layer solution to crack the flaky or tabular output, which is the good reason of chalcocite natural floatability . Under the appropriate grinding fineness, molybdenite crystal dissociation occurs in the S-Mo-S layer, the S-Mo surface ratio increases. But after over grinding, the hydrophilic S-Mo surface proportion become bigger. the floatability decline, although the time to join a certain amount of polarity of the collecting agent, such as xanthate class, the recovery of molybdenite is lower, but after the new mill to produce slime affect the flotation effect, so the molybdenite sorting avoid and prevent excessive wear, the need to adopt a segmented grinding in the production and multi-stage sorting process, and gradually reach the monomer dissociation, to ensure high recovery of molybdenum concentrate.
Grinding usually adopt a ball mill or rod mill top - milling process. Henderson is the only semi-autogenous grinding process. Flotation use priority flotation method. The roughing selection is to separate molybdenum crude concentrates, crude scavenger tailings recovery associated mineral or discarded. Coarse molybdenum concentrates use two, three grinding, four, five times the selection of the final molybdenum concentrate.
Molybdenum ore flotation agent is the non-polar oil as collector, while adding the foaming agent. The United States and Canada for oil emulsifier surfactant Sim Pentax (of Syntex) according to the nature of the ore with lime adjusting agent, sodium silicate is used as gangue inhibitors, sometimes plus cyanide or sulfide inhibition of other heavy metals, minerals.
To ensure the quality of molybdenum, molybdenum concentrate contained in the heavy metals copper, lead, iron and other minerals and calcium oxide and carbonaceous minerals needed further separation:
The general use of sodium sulfide or sodium hydrosulfide, cyanide, iron cyanide system, copper and iron; inhibition of lead dichromate or Knox (Nokes). If you are using inhibitor impurities to meet quality standards, yet need to deal with the chemical processing: secondary copper sulfide leaching with cyanide; chalcopyrite leaching with ferric chloride solution; galena leaching with hydrochloric acid and ferric chloride solution, and can be up to standard content.
Containing calcium oxide gangue is easy clay, ore containing such gangue avoid excessive wear. Often added to the production of sodium silicate, the hexameric sodium metaphosphate or organic plastic, gangue inhibitor or dispersant; can also be used activated carbon and CMC (carboxymethyl cellulose) inhibit carbonate gangue. eventually used for hydrochloric acid or hydrochloric acid plus ferric chloride solution leaching treatment.
