For a long time, China's tungsten concentrate mining is dominated by wolframite ore resources, and the output once accounted for more than 90% of tungsten concentrate production. At present, the reserves of wolframite ore have been depleted, and the replacement of black tungsten ore with scheelite concentrate is of great significance and imminent. 

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.

Tungsten oxide is a new type of semiconductor material and one of the few oxide semiconductors which are easy to achieve quantum size effect. It has the characteristics of electrochromic, absorption and catalysis. It has been widely used in fuel cells, chemical sensors, optoelectronic devices and other fields.

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.