Tungsten Oxide

At present, in Chinese  ammonium paratungstate (APT) enterprises, the most commonly used crystallization method often requires a lot of ammonia, in the production of ammonium tungstate process there are two cases will escape ammonia. There are two cases will escape ammonia: One is the free ammonia in the ammonium tungstate solution, which quickly escapes in the early stages of the heating ammonium tungstate solution; the other is the reaction of ammonia, it is with the loss of the ammonia concentration in the solution and the precipitation of ammonium paratungstate, and constantly to escape. A mmonia l iquid is a high energy consumption products, the current market price is about 2400 RMB / ton. If the recycle rate of ammonia is 80%, the recycle value is considerable, and the recycle cost is low, it don’t need to increase in capacity, using the cooling cover to recycle,  only add a small amount of vacuum pump and water pump for electricity, thus ...