Ammonium paratungstate evaporation crystallization process due to the continuous process, it has a large production capacity, uniform particle size and quality and stability and so on. At the same time, ammonia is easy to recycle. At present, this method has replaced the traditional neutralization crystallization method in industrial production and has become the mainstream method for the preparation of ammonium paratungstate.

Tungsten carbide can be used as a catalyst in the field of chemical catalysis and electrocatalysis because of its platinum like catalysis, and it will not cause CO, H₂S and other gas pollution reactions during the catalytic reaction. But the existing research shows that the catalytic activity of tungsten carbide is less than platinum and other precious metals, thus improve the catalytic activity of tungsten carbide is one of the key issues in the study of WC hot and catalytic materials for industrial applications.

Preparation of ammonium paratungstate by evaporative crystallization is the main method of industrial production of tungsten products. Ammonium paratungstate evaporation crystallization principle is through the use of ammonium tungstate solution itself special nature: ammonium tungstate solution contains more free ammonium, free ammonia is easy to volatilize, ammonium tungstate is very unstable.

Ammonium paratungstate neutralization crystallization method refers to a fixed-form process. In this process, atoms or molecules are highly organized into a structure called a crystal.

Ammonium paratungstate crystals were white and transparent, is a loose and fluidity are better powder material. Ammonium paratungstate English name Ammonium paratungstate, commonly referred to as APT. Ammonium paratungstate for the relevant physical constants, it should include the molecular formula, crystallization temperature, solubility and so on.

Ammonium paratungstate crystals were white and transparent, is a loose and fluidity are better powder material. Ammonium paratungstate English name Ammonium paratungstate, commonly referred to as APT. As a middle product in the production of tungsten products, ammonium paratungstate is one of the main raw materials for the production of tungsten products such as tungsten oxide, tungsten wire, tungsten powder and tungsten carbide powder.

The ITER divertor is a superconducting tokamak can produce large-scale nuclear fusion reactions, commonly known as "artificial sun", is to solve human future clean energy has the potential of scientific project. In this, tungsten filter is an important part of its parts and plays an important role.

Tungstic heteropoly acid generally refers to heteropoly acid and its salts. It is a polyoxometalate metal complex composed of central (Heteropoly) atoms (P, Si, etc.) and coordinated (multi atom W) bridged by oxygen atoms. It can be widely used in homogeneous and heterogeneous catalytic systems.

Ceramic heating substrate is a new generation of new heating element developed in recent years. Because it has the characteristics of environmental protection, high reliability and long life, it is replacing the commonly used PTC heating element containing lead. It has wide market prospect at home and abroad. Therefore, the research on the production technology of high temperature alumina ceramic heating substrate has been paid more and more attention.

Tungsten copper alloy composite material combines the advantages of two kinds of elements W and Cu, has low thermal expansion coefficient, good conductivity, good thermal conductivity and good arc erosion resistance, in mechanical processing, electrical engineering and electronic information field is widely used as electrical contact materials, electrode materials and electronic packaging materials.