Metal tungstates are a kind of important inorganic materials. They have good application prospects in optical fibers, scintillation materials, photoluminescent materials, humidity sensors, magnetic devices, microwave applications, catalysts and corrosion inhibitors. Among them, zinc tungstate nanometer material is a good photoluminescence, photocatalytic and gas sensitive material. However, pure zinc tungstate nanomaterials are less sensitive to hydrogen.

At present, hydrofining catalysts are usually prepared by introducing active metal components from solution or suspension into the carrier through impregnation, and then by drying and calcination. Among them, nickel cobalt molybdenum tungsten sulfide is a highly active hydrodesulfurization catalyst. Impregnation is a common method to prepare supported catalysts, but there are some problems such as uneven metal components on the surface of the support, large particles of active components and uneven dispersion.

Thermal Sprayed tungsten carbide coating is a common wear-resistant coating with high microhardness and low oxide content. It has been widely used in aviation, machinery and other industrial fields. Because of the high hardness of the tungsten carbide coating, the friction coefficient of the friction system is large, which will cause serious wear and tear to the friction pairs matched with the tungsten carbide coating, even affect the service life of the wear-resistant protective coating.

There has always been a low (poor) grade tungsten tin associated ore in the tungsten-tin production industry, especially in Yunnan Province. Due to the similarity of the material and chemical properties of the two metal compounds, the separation of the two metals in the industrial production process has always been a difficult problem for the industrial production technology. The traditional production methods have always had the defects of high pollution and high energy consumption, and it is difficult to conform to the national industrial policy.