Beneficiation method for flotation and recovery of molybdenum from easy-floating gangue refractory molybdenum ore

Abstract

The invention discloses a beneficiation method for flotation and recovery of molybdenum from easy-floating gangue refractory molybdenum ore. The beneficiation method comprises the following steps: taking easy-floating gangue refractory molybdenum ore as a raw material for ore grinding; adopting a mixed reagent containing an adjusting agent, a combined inhibitor, a non-polar collecting agent and a foaming agent for flotation of ore after ore grinding to obtain high-grade molybdenite rough concentrate; and obtaining molybdenum concentrate through repeated 'fine grinding-concentration' processes of the obtained rough concentrate after the flotation. The beneficiation method is simple in technological process, low in cost, less in equipment investment, and high in grade and recovery rate of the molybdenum concentrate product.

Description

technical field [0001] The invention relates to a beneficiation process, in particular to a beneficiation method for reclaiming molybdenum from fine-grained refractory molybdenum ores such as easy-to-float gangue. Background technique [0002] Talc-type molybdenum deposits are currently recognized as one of the refractory molybdenum deposits in the beneficiation industry. my country's Henan Shangfanggou super-large tungsten-molybdenum deposit, Jixi molybdenum deposit, and Southwest Henan molybdenum deposit are all talc-type molybdenum deposits. Since the dissociation planes of talc and molybdenite (001 base plane) are both very hydrophobic, their natural buoyancy is good, and talc is in the shape of small scales, and molybdenite is a typical layered mineral. From the perspective of dissociation surface or shape characteristics, both talc and molybdenite can be regarded as equifloatable minerals, and the density of talc is lower than that of molybdenite. Both of them adsorb n...

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Problems solved by technology

In 2007, it cooperated with Luoyang Fuchuan Mining Co., Ltd., and adopted the mineral processing principle process of "raw ore - grinding - magnetic separation - classification - concentrate regrinding - magnetic sieve selection - floating molybdenum tailings sulfur separation" to complete the above Fanggou high talc refractory molybdenum ore scale-up test with a daily processing capacity of 6.5 tons, the scale-up test obtained molybdenum rough concentrate yield of 6.55% and molybdenum grade of 2.17%, and the grade of molybdenum concentrate was 42% through beneficiation, and the recovery rate was 65% molybdenum selection index; however, due to the large number of equipment and long desliming process in the desliming and grading process, it is difficult to achieve stable operation in production, and the grade of the produced molybdenum coarse concentrate is low, only about 2%. It directly leads to difficulty in producing high-quality molybdenum concentrate during the beneficiation process

[0004] However, the above various talc-type molybdenum ore beneficiation processes have technical problems such as complex process flow, high process cost, and large equipment investment, and the grade and recovery rate of the final molybdenum concentrate product also need to be improved

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