Method for Separating Tungsten And Tin From Tungsten/Tin-containing Concentrate

The invention relates to a method for separating tungsten and tin from tungsten/tin-containing concentrate, particularly a method for treating tungsten/tin-containing concentrate by a leaching process, preparing a sodium tungstate product and entering a tin smelting process, belonging to the technical field of hydrometallurgy. The method comprises the following steps: adding tungsten/tin concentrate containing 3-10% of tungsten and 30-50% of tin into a stoichiometric sodium hydroxide solution, leaching at 150-160 DEG C under the pressure of 0.5-1 MPa, and concentrating to crystallize the leach solution to obtain sodium tungstate; and sending the tin metal in the leached slag into the tin smelting process.

The method can extract tungsten from tin concentrate more simply and effectively, so that the tungsten can be well separated from other metals; and meanwhile, the method can optimally compromise environment protection and economic benefit.


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