Ammonium paratungstate is mainly used in the production of tungsten trioxide and tungsten powder, it can be further processed into tungsten strips, tungsten wires, tungsten carbide, alloy blades, alloy bits, alloy dies and other tungsten products, such as wear resistant, pressure resistant, and high temperature resistant mechanical components.

Among all kinds of renewable energy and clean energy, hydrogen energy is one of the ideal clean energy. It has the advantages of high combustion efficiency, rich resources, no pollution and relatively cheap cost. Hydrogen has a variety of preparation methods. Hydrogen production by electrolysis is the most commonly used method at present. In order to make hydrogen production by electrolysis water, For commercial applications, hydrogen evolution catalyst materials with high catalytic activity must be developed.

The processing technology of the traditional tungsten ore is ore crushing and grinding. The wolframite concentrate is obtained through the shaking table and strong magnetic field. The scheelite concentrate is obtained by flotation and Petrov method. When the traditional method is used to deal with tungsten ore with more than 30% carbonate content, the ideal index can not be obtained many times, and the ratio of useful metals remaining in the tungsten tailings is still large.

Tungsten electrodes are the key materials used in inert gas shielded welding and plasma welding, cutting, spraying and other equipment. At present, thorium and tungsten electrodes (including ThO₂) and cerium tungsten electrodes (including CeO₂) are used more. In addition, a small amount of lanthanum tungsten electrodes and yttrium tungsten electrodes are used.

At present, in the process of producing ammonium tungstate solution by tungsten mine, the technology of separating P, As, Si and Mo from tungsten ore to produce high pure ammonium tungstate solution has the classical chemical method, the current extraction method and the ion exchange method. The current extraction process is the free alkali in the inorganic acid neutralization solution, the silicate hydrolysis, most silicon is removed by silicic acid precipitation, then the P, As and the remaining silicon are removed by the magnesium salt or ammonium magnesium salt, and the Mo is separated by the precipitated MoS₃ method, and the purified sodium tungstate solution.

At present, in the process of producing ammonium tungstate solution by tungsten mine, the technology of separating P, As, Si and Mo from tungsten ore to produce high pure ammonium tungstate solution has the classical chemical method, the current extraction method and the ion exchange method.

In the process of tungsten concentrate smelting, the existence of tin will have a serious effect on the mechanical and physical properties of the tungsten concentrate. Therefore, according to the national standard, the quality standard of the product submitted in the process of selling tungsten concentrates is required to report the content of tin in the tungsten concentrate and to determine the content of tin.

The tungsten coil used in the cathode of the magnetron is made of the thorium tungsten wire in a spiral shape. It has the ability to emit electrons by heating the current through the current to the specified temperature. The cathode has the advantages of short heating time and strong anti electronic bombardment.

China has successfully produced high-purity tantalum niobium products from various tantalum niobium ores, and it has formed a considerable scale of production capacity. In the process of wet production of tantalum and niobium, a large number of rare elements (such as Ti, Cr, Re, W, Ni, etc.) as well as common elements (such as Sn, Ca, Fe, Mo, etc.) are associated with the raw mineral.

The recovery rate of tungsten mineral resources is only 60-70%, and the recovery rate is about 80%. The recovery rate of mining, selection and metallurgy is only about 50%, of which most of tungsten is lost in tungsten mud. There are more and more scheelite resources of "poor, fine and miscellaneous", and the scheelite is just as brittle as wolframite, it is easily comminuted in the process of grinding and it is lost in fine mud.