Method for Recycling Tungsten From Molybdenum-removal Slag

The invention provides a method for recycling tungsten from molybdenum-removal slag, ammonium tungstate solution with low impurity content can be obtained through the method, and the solution can be directly used as raw material for producing ammonium paratungstate. The molybdenum-removal slag is used as raw material, the method comprises the steps of pre-treating, washing, filtering and testing.The production process of the ammonium paratungstate is optimized by the method, the problem that the molybdenum-removal slag with high tungsten content is difficult to treat is solved, the tungsten in the molybdenum-removal slag is recycled, and the cost is reduced; the method of the invention is high in recovery rate to the tungsten, simple, convenient and easy to operate.

A recovering tungsten from molybdenum slag addition method to remove the molybdenum slag as raw material, characterized in that it comprises a pretreatment step, washing and filtration steps and test steps: a pretreatment step in addition to the molybdenum slag, when dry In addition to molybdenum clinker through the large, coarse crushing processing, in addition to molybdenum slag tune into the bucket in the pulp slurry; in the washing step, through the steam heating, stirring; in filtration and laboratory step by testing the pressure filtrate and the content of the press residues in tungsten trioxide to determine whether the extraction of tungsten has been completed.


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