Tungsten Powder Preparation by Ammonium Paratungstate Hydrogen Reduction

Ammonium paratungstate hydrogen reduction preparing tungsten powder combines the calcination of raw material powder and hydrogen reduction of tungsten oxide. It reduces the intermediate process and improves producing efficiency.

During the process of preparing tungsten powder by ammonium paratungstate hydrogen reduction, reduction temperature and time affects the producing or tungsten powder. Raising reduction temperature and extending reduction time will make the size of tungsten powder bigger and the completion of tungsten powder crystal. Extend the reduction time will make the gaseous phase transport more active. The fine tungsten oxide particles will deposit on the large tungsten powder particles. Thus enlarge the size of grain size.

Compared to the traditional preparing method, tungsten powder prepared by ammonium paratungstate hydrogen reduction has higher property and green strength. 



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