Molybdenum and tungsten are strictly controlled impurities in tungsten and molybdenum metallurgical products. The national standard GB10116-88 of our country stipulates that molybdenum is not more than 20ppm in the 0 grade ammonium paratungstate, the national standard GB/T3480-2007 stipulates that MSA-0 molybdenum acid is not more than 150ppm in the product. When dealing with molybdenum scheelite, waste catalyst and other raw materials, they are faced with the task and difficult problem of separating tungsten from molybdenum in solution.

The main method of producing super coarse grained cemented carbide is the use of super coarse tungsten carbide powder and cobalt powder as raw materials. It is pressed and sintered to become a product after batching, ball milling, drying and granulation. However, the ultra coarse tungsten carbide powder will break in the process of ball milling, and the grain size will decrease greatly. During the sintering process, the WC grain can not grow into an ultra coarse grained WC grain.

TFT film has the advantages of high responsivity, high brightness and high contrast. It is one of the basic materials in many industries. Therefore, it is widely used in the fields of solar cells, liquid crystal displays and plasma displays. In recent years, along with the rapid development of high-end displays, tungsten molybdenum alloy rotating target is an important material for preparing TFT film.

In the existing technology, the synthesis of tungsten oxide nanowires is mainly included in the following methods: high temperature vacuum vapor deposition, surfactant method, or anodic alumina template method. Compared with the above methods, the hydrothermal preparIn the existing technology, the synthesis of tungsten oxide nanowires is mainly included in the following methods: high temperature vacuum vapor deposition, surfactant method, or anodic alumina template method. Compared with the above methods, the hydrothermal preparation process is very simple and most widely used.ation process is very simple and most widely used.

arsenicTungsten carbide powder is the main raw material for the preparation of cemented carbide. At present, the preparation of ultra-fine tungsten carbide powder mainly includes conventional tungsten oxide hydrogen reduction-carbonization method, tungsten oxide direct reduction carbonization method, plasma chemical synthesis method, mechanical alloying method. The quality of tungsten powder directly affects the performance of cemented carbide products. In order to obtain high-performance ultra-fine WC-Co cemented carbide, the grain size of tungsten carbide must be controlled. Therefore, the preparation of ultrafine tungsten carbide powder with good dispersibility and uniform particle size distribution is the key technology for the preparation of ultrafine grained WC-Co cemented carbide.

At present, the content of WO₃ in white tungsten flotation tailings in many mines has reached more than 0.2%, even as high as 0.4%. These tailings are very low in floatability due to strong inhibition of inhibitor water glass, and the size of the inlay is very fine. It is very difficult and difficult to recycle.

The tungsten sponge is the major carrier of the impregnated ruthenium tungsten cathode. The pores in the sponge are used to store the emissive material and at the same time serve as a transport channel for the emissive material. So far, the major difficulty in preparing the uniform distribution of tungsten sponges is that the particle size of tungsten powder is not uniform.

According to China Geological Survey, scientists from the Chengdu Geological Survey under China Geological Survey identified a large gneiss dome structure in the south of the Zhaxikang mining area in the eastern Himalayas. The high-differential pale-colored granite has multi-period intrusion characteristics, and a thick silicon skarn-type bismuth-tin-tungsten rare metal ore body is found in the edge of the dome.

The tungsten alloy bullets produced in China are called tungsten core shelling armor-piercing projectiles. In the 1960s, the United States and other Western countries introduced rotary-stabilized tungsten-shelled armor-piercing projectiles on small-caliber guns at the same time. Their excellent armor-piercing performance caused great concern in the socialist countries. In order to improve the ability of infantry weapons to deal with thin steel armor and effectively prevent air defense at close range, China has applied the rotary stable shelling technology used on the shells to the bullets, and developed the first generation of tungsten core shelling armor-piercing projectiles.

Tungsten is the most promising plasma material to be used in fusion reactors due to its high melting point, low coefficient of thermal expansion, low sputter corrosion rate, high thermal conductivity, low hydrogen retention, and high strength at high temperatures. These excellent properties make tungsten has the ability to stand high doses of particle irradiation (such as neutron irradiation) and high heat flow in a fusion reactor.