Tungsten is a kind of high melting point metal with melting point of 3410 ℃, so it becomes a special process to make it into regular shape. The addition of rare earth elements to tungsten can effectively improve the performance of materials, but the difficulty of forming and processing is obviously increased. Moreover, the preparation of rare earth tungsten electrodes from rare earth tungsten slabs still needs a long process.

Oxygenated desulfurization (ODS) technology has mild operating conditions, high selectivity, and no need of hydrogen, which reduces operating costs. It has high desulfurization efficiency for benzothiophene compounds which are difficult to remove in catalytic hydrogenation, and can meet the requirements of ultra-deep desulfurization. It has good application prospects. Catalyst is a key factor in catalytic oxidation desulfurization. Catalysts for the oxidation of hydrogen peroxide are usually organic acids such as formic acid and acetic acid, heteropoly acids such as phosphotungstic acid, metal oxides, etc.

In recent years, with the rapid development of social economy, the impact of human activities on the earth has become more and more serious, making the pollution of the earth more and more serious, especially the water pollution. In order to solve this problem, people began to study photocatalyst, hoping that it can alleviate the environmental pollution.

Tungsten carbide is the main raw material for the manufacture of cemented carbide products, and its particle size has a decisive influence on the properties of cemented carbide products. The preparation of nano tungsten carbide has become the main way to improve the strength and toughness of cemented carbide products.