The existing literature on recovering tungsten from tungsten tailings has reported that the content of WO₃ in tailings is more than 0.2%, which is relatively high tungsten containing tungsten tailings, and the tungsten minerals are selected by wet leaching and flotation, which not only needs grinding, adding medicaments, high cost, but also causing environmental pollution; and using magnetism. The method of recovery of wolframite requires energy consumption and relatively high cost.

In order to improve the leaching rate of tungsten, high pressure leaching, extraction and ion exchange are generally used to improve the recovery of tungsten.

Tungsten cobalt cemented carbide is mainly tungsten. Because of the advantages of rich tungsten mineral resources in China, in the early development of hard alloy industrial process, the waste hard alloy is not paid much attention to. The upstream industry of the hard alloy is overdue to the excessive exploitation of tungsten mineral resources, the management is chaotic, the waste of resources is serious, most of the raw raw material is high quality. It is used only to produce low-grade alloys.

The tungsten bead pad for grenade is a prefabricated killing element assembled in the axial direction of the ammunition. It can provide a killing element gain of 35 to 600 pieces for the axial direction of the ammunition. The projectile structure is made of a hard aluminum alloy body with a grooved square wire. The prefabricated fragments and high-energy explosives are made of prefabricated tungsten bead pads, which make the shape of the fragments more regular, the flying angle of the fragments more reasonable, the killing power is greater, and the function of burning and arson is to improve the killing efficiency of the grenade ammunition products.

Nowadays, the International Thermonuclear Experimental Reactor (ITER) has been built in France. The plasma-facing material is an urgent problem to be solved for ITER and future commercial fusion reactors. It is directly related to whether commercial power generation in fusion reactors can be realized in the future.

Although the porthole of the Boeing 787 has no visor, it can change the transparency. You only need to press the button, and then transparency-changeable porthole will become completely dark. Of course, the captain can also dim directly from the cockpit when the night falls. In addition, because the color change process of this transparency-changeable porthole is gradual, you don't have to worry about the eyes being uncomfortable. What's more, when an unexpected power outage occurs, the portholes become completely transparent and comply with relevant aviation standards. The key is the tungsten oxide electrochromic film applied on the porthole. To understand this, we need to know what is electrochromism ?

Smart Home makes our home life more comfortable, safer and more convenient! It is also energy-saving and environmentally friendly, and it also makes our life quite artistic. The smart sunroom is one of which. The basic characteristic of the smart sunroom is to permit abundant sunlight in. Thus a large area of glass wall has been always applied on it. What makes it smart is the temperature adjustment function, which keeps the room from too warm or too cold. What conflicts is that the major source of heat comes from the sunlight through the glass, wherein the ultraviolet (UV) rays and infrared radiation carries the most percent of heat. Therefore it is necessary to find a heat-insulating coating with ultraviolet sunlight & infrared radiation blocking functions for the glass wall. The nanometer tungsten oxide is considered as a suitable material.

Tungsten iron is an important raw material in industry. The use of tungsten iron is very widely used in various industrial fields, such as mine, metallurgy, machinery, construction, transportation, electronics, space and military industry. The traditional tungsten iron is made from wolframite concentrate and mixed in electric furnace by mixing the additive in a certain proportion. This smelting process has difficulties in raw material sources, high requirements for raw materials, high cost and need to be broken by crusher in the process of preparation, resulting in unevenness and other technical problems.

Tungsten metal has high melting point, high hardness, wear resistance, good conductivity and thermal conductivity. It is widely used in the fields of mine, metallurgy, electronics and machinery, and it is also an important raw material for the preparation of hard alloy materials. The rapid development of modern industry has put forward higher requirements for today's cemented carbide materials, and it is necessary to develop hard alloy materials with high hardness, high strength and high wear resistance.

Tungsten containing waste is complex, difficult to extract and complicated. This kind of APT is manufactured by traditional methods with long process flow, narrow range of raw materials, large investment in equipment, unstable products and poor economic benefits. In recent years, people have made some explorations in the preparation of ammonium parotungstate from waste materials containing tungsten and achieved some results.