Tungsten has the advantages of high melting point, high strength, high hardness and high wear resistance. In addition, it has low thermal expansion coefficient, good corrosion resistance and oxidation resistance, and good conductivity and thermal conductivity. Therefore, tungsten has been widely used in cutting-edge scientific fields, national defense industry and civil industry.

Ammonium paratungstate is an important intermediate product in tungsten hydrometallurgical process. The production process of tungsten concentrate decomposition-ammonium paratungstate mainly includes ore decomposition, transformation to obtain crude ammonium tungstate solution, impurity removal from crude ammonium tungstate solution, crystallization to obtain ammonium paratungstate and crystallization mother liquor, recycling of crystallization mother liquor, etc.

Tungsten carbide (WC) has been widely used in catalysis because of its platinum-like catalytic activity, high hardness, high thermal stability and good wear resistance. As a catalyst, WC has not only good catalytic activity for hydrogenation and dehydrogenation, but also selective catalysis for some reactions.

Foamed metal tungsten is a kind of material with double properties of function and structure. It has certain strength, high temperature resistance and corrosion resistance, and has low density, high porosity and large surface area. It is widely used in modern defense and military, atomic energy, aeronautical and aerospace, electronic information and other fields.