Coarse Crystalized Ammonium Paratungstate

Coarse crystalized ammonium paratungstate (APT) is a flaky or needle-like white crystal that is slightly soluble in water and insoluble in alcohol. As a raw material for the powder metallurgy industry, coarse crystalized APT has the characteristics of simple production process, high purity, high bulk density, good fluidity, and easy storage and transportation.

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The particle size of ammonium paratungstate crystals has a great influence on the particle size of subsequent tungsten powders. It has been reported that the particle size of metal tungsten powder prepared by hydrogen reduction of ammonium paratungstate has an inherited genetic relationship with the original ammonium paratungstate particle size under the selected process conditions. In addition, with the continuous improvement of the performance and quality requirements of subsequent tungsten powders, downstream manufacturers of APT at home and abroad have put forward higher requirements for APT, such as finer grains and higher purity, which means the living space of coarse crystalized ammonium paratungstate will be squeezed to a certain extent, and the high-purity fine particle size ammonium paratungstate will gain a broader application market.

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