Introduction Of Cerium Oxide Rare Earth

The cerium oxide powder is a light yellow or brown powder. Its density was 7.13g/cm3, a melting point of 2397 ° C. It is insoluble in water and alkali, but slightly soluble in acid. At a temperature of 2000 ° C and pressure of 15Mpa, we can use the hydrogen reduction of cerium oxide, cerium oxide. When the temperature is between 2000 to 2007, the Liberal ℃, pressure 5MPA, cerium oxide yellow and red, maybe pink, its performance as polishing materials. But it is mainly used as a glass decolorizing agent, glass polishing powder, it is also prepared a raw material of cerium metal, high purity cerium oxide is also used for the production of luminescent materials. Insoluble in water, but can be dissolved in acid. Bleach, it not only can be used for glass, advanced polishing powder as a clarifying agent, is also used in ceramic electrical, chemical, and other industries.

The History of the Development of Cerium Oxide Powder

With the development of rare earth industry in the 1930s, first as a polishing powder glass polishing rare earth oxides in Europe. Rare earth polishing powder in World War II, soon succeeded in polishing precision optical instruments. Abroad 60 years ago to start the production of rare earth polishing powder in the 1990s, it has formed more than 30 kinds of products in a variety of standardized series. Currently, the major domestic brands chute brand cerium oxide powder and arrogant beauty brand cerium oxide polishing powder. 15 foreign rare earth polishing powder manufacturers (annual production capacity is 200 tons or more. The annual production capacity of France Rhodia is over 2200 tons, it is the world's largest rare earth polishing powder manufacturer. In 1968, China's first successful development of rare earth polishing powder chemical plant in Shanghai, cerium oxide manufacturers in China more than 14 (annual production capacity of more than 30 tons), compared with foreign countries, there is still much gap.

The Application of Cerium Oxide Powder

As a rare earth manufacturer says, cerium rare earth polishing powder has better chemical and physical properties, so that it has a polishing of a wide range of applications in the industrial products, such as in the device of the various optical glass, television picture tubes, an optical lens, a CRT, flat glass polishing a semiconductor wafer and precision metal products, such as. Cerium rare earth polishing powder is mainly applied in high-speed precision optical lens polishing. Of the cerium rare earth polishing powder, high-speed optical instrument is mainly applied to the polishing of moderate precision small and medium-sized spherical lens. Domestic use polishing powder dosage still need to be to continue to develop new uses in the future. The low cerium oxide rare earth polishing powder is suitable for television picture tubes, eyeglass lenses and flat glass polishing. Therefore, the purpose of cerium oxide production is to grasp the opportunity to develop in the glass deep processing industry.

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