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. Since the APT crystallized  liquor contains a large number of impurity elements, it can not be directly returned to the process, in order to improve the metal recycle, it is necessary to set the auxiliary process to recycle the  of WO 3 . Due to the low energy consumption of membrane separation technology, it’s easy to achieve continuous operation and management, the process is easy to enlarge, the equipment is compact, it occupies a limited area and easy to use with other processes. In recent years, it widely attracted by the industry. Nano-Membrane filtration method is based on nano filtration equipment and put forward on the basis of great achievements. Nano membrane  filtration  was deve...