【China Molybdenum Industry News Network】
Flotation process:Deep select contain trace amounts of copper molybdenum ore, using part of the mixed - flotation process. Jinduicheng molybdenum processing plant processing ore valuable mineral molybdenite, pyrite and minor chalcopyrite, molybdenum, copper flotation, tailings flotation of pyrite, copper - molybdenum separation and molybdenum concentrate mixed - flotation process.Now also from the copper-molybdenum ore beneficiation recovery of molybdenum, a commonly used process copper-molybdenum mixed flotation, and then the copper-molybdenum separation and a selection of molybdenum concentrate.
Copper-molybdenum separation and molybdenum concentrate featured commonly used sodium sulfide and sodium cyanide.
The molybdenum concentrate selected depends primarily on the number of total enrichment ratio of molybdenum. General total enrichment is high, the selection of the number of times usually more; total enrichment ratio is low, which offers a selection of the number of times usually less.
Molybdenum processing plant ore processing ore grade higher (0.2% to 0.3%), enrichment ratio of 133 to 155, its original design featured a total number of 7 times, Jinduicheng processing plant molybdenum processed raw ore grade of approximately 0.1%, the enrichment ratio of 430 to 520, and advice total number of up to 12 times. In recent years, in order to meet the needs of molybdenum concentrate exports, Jinduicheng molybdenum processing plant using hydrochloric acid - ferric chloride leaching Apart from impurities in the molybdenum concentrate.
Molybdenum ore processing plant from some of colored system point of view, the processing of ore grade vary greatly, the high at 0.3% or more, a low of 0.1% or less, and some only 0.02%. Processing the actual recovery of the vast majority of more than 80%. The resulting concentrate grade of 45% to 54%, tailings grade of 0.02%, a high of 0.04%, a low of 0.01%.
The current industrial production of molybdenum molybdenite concentrate smelting oxidizing roasting to extract pure molybdenum trioxide restore roasting molybdenum metal powder three links.
Molybdenum concentrate first reverberatory furnace, multiple hearth furnace roaster oxidizing roasting or flash furnace desulfurization made a calcine impure molybdenum trioxide (Mo ≥ 40% ~ 48%), Calcine using The metal thermal or silicon thermal method can produce molybdenum ferroalloy.
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