Tungsten electron emitter is a key material for vacuum electronic components, inert gas shielded welding, plasma welding, cutting, spraying, smelting and special electro-optic sources. At present, the most of the materials are thorium and tungsten and cerium tungsten materials.

With the continuous development of cemented carbide industry, the demand for tungsten carbide is increasing. The tungsten carbide powder prepared by the traditional method has a high aggregation degree, which is liable to cause the larger average particle size and the smaller particle size. As a result, the difficulty in manufacturing high-quality cemented carbide is increased, making it difficult for the cemented carbide products to achieve a high degree of uniformity in wear resistance and toughness.

Tungsten electrode material is one of the key materials used in tungsten inert gas protection welding and plasma technology. With the development of high and new technology, the properties of tungsten electrodes are becoming higher and higher in the fields of mechanical electronics, petroleum, chemical, aerospace, ship, atomic energy and other fields. The tungsten yttrium electrode has long life, long arc beam and compression. It is popular because of its large degree and good arc performance.

In the existing technology, the production of ammonium para tungstate is not recycled, and the consumption of auxiliary materials is large, and the environmental pollution is heavy. The main reason is that a large amount of high salt waste liquid is produced during the transformation process of tungstate solution, and the evaporation crystallization mother liquor is difficult to recycle economically and produce ammonia nitrogen wastewater. In the existing technology, if the enterprise is changed to "cycle" model, then the enterprise will lose money, so the tungsten metallurgical enterprises all over the world have to choose sewage discharge.

With the continuous development of the hard alloy industry and the quickening of the pace of deep-sea engineering, the exploration of oil and gas is becoming more complex in the geological conditions and physical environment. Some areas with high H₂S and CO₂ content and high sulfur bearing geological environment have become the focus of oil and gas exploration, and this has also raised higher requirements for the hard joint gold for drilling.

The table is commonly used in separation of fine ore dressing equipment, processing of metal ore can tick size in the 3 - 0.019 mm particles. After more than 100 years of development, the performance of ore dressing rocking bed has been perfected, mainly around the target of high efficiency and low space occupancy rate, and great progress has been made.

The present sintering process of high proportion tungsten alloy is generally used in primary sintering. The high ratio of waste products and low utilization ratio of raw materials make high production cost of high gravity tungsten alloy. For example, the utilization ratio of raw material for 90WNiFe alloy by existing technology is only 60%, and the raw materials of 93WN iFe alloy sintered by existing technology are used. The utilization rate is only 63%, and the waste of raw materials is serious.

China's Tungsten smelting has about 20000000 cubic meters of wastewater every year. Most of the production enterprises have serious problems of ammonia nitrogen, arsenic, phosphorus and fluoride emissions. How to solve the environmental pollution of tungsten smelting industry, protect river water and people's health, and realize the sustainable development of tungsten industry is of great significance.

Carbides are used to produce cutters for cutting or forming objects such as end milling, knives and scissors. In this automatic cutting or automatic molding process, hard alloy tools need to be subjected to extremely harsh conditions.

Tungsten is nonferrous metal, the distribution of the crust is small, mainly in the state of tungstate and tungsten, the main tungsten minerals are wolframite (Fe, Wn) Wo₄ and scheelite CaWo₄, which are mostly vein deposits and their Wo₃ content is between 0.4 and 2%. Wo₃ reaches more than 65% and becomes tungsten concentrate before it can be used to smelt tungsten or extract compounds and metals.