Simple Recovery of Wolframite and Scheelite in Tungsten Slender Mud

The recovery rate of tungsten mineral resources is only 60-70%, and the recovery rate is about 80%. The recovery rate of mining, selection and metallurgy is only about 50%, of which most of tungsten is lost in tungsten mud. There are more and more scheelite resources of "poor, fine and miscellaneous", and the scheelite is just as brittle as wolframite, it is easily comminuted in the process of grinding and it is lost in fine mud.

As the tungsten mineral resources tend to be "poor, fine and miscellaneous", this process can not adapt to the change of this resource situation. Therefore, it is urgent to develop a kind of medicine with low cost, good effect, wide source and convenient use, the flotation method is used to recover the fine tungsten resources.

The study on the floatation of wolframite was carried out under alkaline conditions. Due to the addition of a large number of water glass in the process, the flotation tailings were cloudy, difficult to clarify and difficult to deal with the tailings. The problems such as low recovery rate of tungsten and fine mud, poor turbidity and difficult treatment of tailings are solved.

The beneficiation method of wolframite in the recovery of tungsten slender mud includes the following steps: preconcentration of tungsten fine mud, coarse slime concentrate, and then flotation recovery of sulfide ore; floating sulphur tailings are added to the mixture of wolframite and scheelite tungsten coarse concentrate, and black and white coarse concentrate in lime, sodium carbonate and pure water glass. Scheelite Concentrate was obtained by flotation separation of sodium sulfide and oxidized paraffin soap 731, and wolframite concentrate was obtained by flotation tailings.

Taking the small test of the laboratory as an example, for the coarse concentrate containing WO₃1.21%, using zh-2 as a wolframite and scheelite tungsten flotation collector, the recovery rate of scheelite concentrate is WO₃74.04%, the recovery rate is 39.24%, the wolframite concentrate is WO₃34.93%, the recovery rate is 57.45%, the tungsten concentrite is WO₃44.46%, and the recovery rate is 96.69%.

The above method can effectively solve the problem of low recovery rate of wolframite in tungsten slender mud and difficult clarification of the turbidity of tailings. The recovery rate of tungsten in tungsten fine slime is improved. It is suitable for the comprehensive recovery of wolframite and scheelite in tungsten fine slime. The size of the fine slime is less than 0.1mm, and it is also suitable for the recovery of wolframite and scheelite in the symbiotic mineral resources.

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