Tungsten Oxide

The crystalization method of evaporation and extraction method in the preparation of APT will produce crystallization liquor, leaving about 5% -10% of the WO 3  and part of the S, P, As, Mo, K, Na and other impurities. Resulting in it can not directly return to the process of use. In order to improve the metal recycle, it is necessary to set up auxiliary processes to recycle WO 3  in the APT crystallization liquor. Selective precipitation method is developed from the tungsten and molybdenum separation technology. Scholars have found that the use of tungsten, molybdenum compounds of some of the structure and nature of the differences, learn from the successful experience of mineral processing flotation synthesis, synthesis of a precipitant, it can interact with molybdenum and other impurities to form a very small solubility of the compound, and the tungsten compounds remain in the solution to achieve selective separation of tungsten and impurities. ...