There are three recovery schemes for the bismuth ore beneficiation process: direct preferential flotation from crude tungsten concentrates; preferential flotation in self-sulfurized ore concentrates; flotation of other sulfide minerals in self-sulfided mineral concentrates The output of tailings usually contains more gangue and wolframite , which need to be removed by shaker selection and magnetic separation. Separation sequence is: → molybdenite bismuthinite, galena ore brass → → → sphalerite pyrite. The volcanic ore bismuth ore is very similar in floatability, and is generally mixed for smelting and then separated. The fine particles are floated and the coarse particles are floated.
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