Rare earth polishing powder refers to a mixed light rare earth oxide powder with cerium oxide as the main component used to improve the surface finish of products or parts. It is widely used in industrial product polishing because of its excellent chemical and physical properties.
Rare earth polishing powder can be made from bastnaesite concentrate (containing RE2O3≥70%) or soluble rare earth salts (containing CeO2/RE2O3=45%~50% rare earth chloride or cerium-rich rare earth compound containing more than 80% CeO2) as raw materials through chemical treatment, burning, crushing, screening and other processes. CeO2 polishing powder is widely used in the polishing of cameras, camera lenses, TV picture tubes, spectacle lenses, etc.
The specifications and models of rare earth polishing powder are not the same. Generally, they can be divided into three types: low cerium, rich cerium, and high cerium according to the content of cerium oxide. The polishing ability of rare earth polishing powder is closely related to the content of cerium oxide. Rare earth polishing powders with high content of cerium oxide usually have a strong polishing ability, but their prices are relatively more expensive.
Cerium oxide rare earth polishing powder has the advantages of high polishing finish, fast speed, and long service life compared to other abrasive materials such as Fe2O3 and Al2O3. It only takes about one minute to polish optical glass lenses with cerium oxide rare earth polishing powder, which is more than 30 times more efficient than ordinary polishing powders that cost more than 30 minutes in the past.