In the process of beneficiation, the tungsten mine has a large amount of fine slime, which generally accounts for about 8%-10% of the ore. The recycled rate of the conventional tungsten slender mud process is generally low, about 20 - 30%. Therefore, the comprehensive recycle process and application of tungsten slender mud can be used to improve the comprehensive recycled rate of tungsten slender mud, reduce the waste of resources and reduce the cost of mineral processing. It is of great importance to increase the economic efficiency of enterprises.

The chromism and coating quality of tungsten nickel alloy target produced by the existing technology are still not stable enough, resulting in low yield and high cost of electrochromic glass, more wastes such as waste acid and other pollutants are produced.

Separation of tungsten and molybdenum has been the focus of tungsten and molybdenum smelting technology research and development. Some researchers have proposed a method of extraction and separation of tungsten and molybdenum by extraction and separation of ammonium tungstate solution by N263- paraoctanol - kerosene system, which consists of 20% N263, 20% isooctanol and 60% kerosene, O/A=1:1.

In order to optimize the technological process, energy saving and emission reduction, the researchers put forward a far infrared hot press decomposition of tungsten mineral raw materials to achieve a clean production process for the full decomposition of tungsten minerals in wet tungsten smelting. The characteristics of the process are as follows:

The traditional tungsten concentrates bake converter is heating through the drying oven. The main fuel of the oven is coal or dry wood. This drying method shows the following shortcomings in the production practice: first, it causes environmental pollution and consumes a lot of wood; Second, it is that both coal and dry wood need a larger fuel yard, and the effect is affected.

The calcined ammonium tungsten compound is the source of tungsten powder metallurgy raw material. The tail gas of calcined ammonium tungsten compound contains a large amount of water vapor, ammonia and ammonia slag. Recycling ammonium tungstate from the tail gas of the calcined ammonium tungsten compound usually requires the recycled tail gas, the treatment of the recycled liquid, the separation of solid and the filtration of the slag.

Tungsten materials have excellent thermal stability, high temperature performance and X-ray absorptive capacity. Tungsten sheet with thickness less than 0.3mm is called thin tungsten sheet. Thin tungsten sheet has excellent thermal stability, high temperature performance and X-ray absorption capacity. It has been widely applied in the fields of electrical vacuum technology and medical diagnostic equipment.

Ferrotungsten is an iron alloy series (containing tungsten, 70%-80%), an alloy of tungsten and iron. It is used as an alloy additive for steelmaking. The commonly used tungsten iron contains 70% and 80% tungsten types. With the depletion of wolframite resources, how to make full use of scheelite resources that occupy the majority of reserves has become particularly important.

Tungsten carbide is the main raw material for the production of hard alloy. The basic process of producing alloy powder in tungsten production and processing enterprises is that the tungsten carbide powder and cobalt powder are mixed through mechanical mixing. The uniformity of the alloy powder is not ideal, and it has a great influence on the subsequent hard alloy pressing. Some scholars try to pre allot alloy powder in liquid state, and then to reduce the alloy powder:

Phthalic acid ester (PAEs) is mainly used as a modified additive for plastics to increase plasticity and strength of plastics; it can also be used in the production and processing of pesticides, coatings, printing and dyeing, cosmetics and spices. The PAEs has estrogen effect, which can interfere with the endocrine and reproductive systems of animals and human beings and damage reproduction and development.