Tungstate nanomaterials have been widely used in many fields, such as optics, electricity, magnetism, conductor/superconductor, catalysis, biology and so on. The synthesis methods of transition metal tungstate materials include sol-gel method, copolymer assisted synthesis, reversed micellar soft template, wet chemical method and solution synthesis.

In the traditional method of producing ammonium paratungstate, the main impurity ions in tungsten waste are phosphorus ions, magnesium ions, iron ions and potassium ions. The major part of the tungsten waste is four kinds of phosphorus ions, magnesium ions, iron ions and potassium ions. At 50 -60°C, the large part of the phosphorus ions and potassium ions in the tungsten residue can not be precipitated, and the magnesium ions are also due to the magnesium ions. With the influence of iron ions, most of the tungsten slag produced will be lumpy when the reaction is finished.

In China, a large amount of tungsten tailings and tungsten waste rock after hand picking has been produced in the mining and processing of tungsten ore. And they are generally dumped into and stored in the tailings ponds. For a long period, most mining businesses are committed to production of tungsten ore, the reclamation of tailings have rarely been noticed.

The ratio of scheelite and wolframite is 1: 9~9: 1 in the co-occurrence ore. separation of scheelite from wolframite from complex polymetallic ores has always been a difficult task for mineral processing.
In view of this problem, some scholars have proposed a beneficiation method with good separation effect, high recovery, simple operation and low reagent cost for scheelite. The method is made up of the following steps in turn:

With the continuous exploitation and consumption of high-quality tungsten molybdenum resources, complex tungsten and molybdenum co-occurrence mineral resources are being gradually exploited and utilized. However, the impurity content in tungsten-molybdenum products seriously affects its performance. In order to improve the performance of tungsten-molybdenum products, the complete separation of tungsten and molybdenum is necessary. Therefore, the separation process of tungsten and molybdenum is the key.

With the improvement of the integration of semiconductor integrated circuits, the size of the device has been reduced. At present, the mainstream semiconductor transistors have reached the size of 22 nanometers or smaller. In order to measure the electrical characteristics of a single small size device, the diameter of the tungsten metal probe needed to contact the device is small enough.

Tungsten zirconium alloy is a typical energy containing structure material, which is fairly stable at room temperature and has high strength, and the zirconium based elements in the tungsten zirconium alloy are induced by impact and release a large amount of heat under impact loading. The tungsten zirconium alloy fragments made of this characteristic can use its strength to penetrate through the target and produce additional damage to the target by its release characteristics. Finally, it can significantly improve the damage effect of the fragment to the target, and has a broad application prospect in the military field.

In the process of hydrometallurgy of tungsten, due to the depletion of wolframite resources, hydrometallurgy of tungsten will also turn to scheelite and artificial scheelite as the main raw materials. The production of tungstic acid from Scheelite (powder) and artificial scheelite pulp is one of the key processes. It is also an important process for further processing of deep processed products with tungsten as the main component.

In order to protect the earth's ozone layer, a zero ODP value of HFCs and HFOs has been introduced in the world, and chlorofluorocarbons (CFCs) and hydrogen chlorofluorocarbons (HCFCs) are eliminated with a zero ODP value. HFCs and HFOs have been widely used as refrigerants, cleaning agents, foaming agents, inextinguishing agents and etching agents.

The purification assembly of the electronic air purifier consists of a generating pole and a collection pole, which is made up of plastic parts and tungsten wire, the two ends of the tungsten wire are attached to the plastic parts. Therefore, the plastic parts need to be reserved for the holes and gaps to allow the tungsten wire to pass through, the gap of the wire of the tungsten wire of the same kind air purifier is larger. The dust enters the plastic parts through gaps between holes.