At present, the main method to decompose tungsten minerals in industry is the NaOH decomposition process. Obviously, the traditional method can not cope with the decomposition of wolframite and scheelite mixed symbiotic ore. Therefore, a set of effective combination scheme is also very important.

In the production of tungsten powder, tungstate thermal decomposition is mostly used to produce blue tungsten oxide, blue tungsten oxide hydrogen reduction process to tungsten powder. The conventional process generally uses ammonium paratungstate as the initial raw material, but it is difficult to obtain ultrafine tungsten powder with average particle size of less than 1μm by hydrogen reduction.

Fluorite is the most important mineral in fluorides. It has unique physical and chemical properties and it is widely used. The reserves, production and export of fluorite in China are the first class in the world.

China has abundant tungsten resources, for the mixed materials containing wolframite, such as high calcium wolframite concentrate, refractory tungsten material, tungsten fine slime and scheelite ammonia leaching residue, only sodium hydroxide leaching can only dissolve wolframite and it can not leach scheelite. If hydrochloric acid leaching alone can only dissolve scheelite, the wolframite can not be leached.