activated alumina, pseudoboehmite, Zibo XiangRun Environment Engineering Co., Ltd.

In the polishing industry, high-purity alumina is mainly used for polishing in the hardware industry and the gem and precision glass industry. The hardware industry, such as automotive polishing, requires alumina with high cutting power and high whiteness. The purity requirements for alumina are not as high as in the gem industry. In this industry, alumina is used as a raw material to make polishing wax for polishing. Polishing in the gem industry is mostly divided into three steps, rough polishing, medium polishing and fine polishing. High-purity alumina is the material for fine polishing. The purity of polished alumina required by this industry is relatively high, at least 99.95% or more. Most companies now use high-purity alumina as a polishing liquid. At present, high-end polished alumina is still monopolized by Japanese companies, and the price is relatively high. Domestic polished alumina is not very mature yet, and the high-end field is not stable enough, and the polishing market has great prospects.

Shandong Bairui started producing high-purity alumina for sapphire in 2016 and successively expanded high-purity alumina for lithium batteries, high-purity alumina for ceramics, and front-end products such as aluminum isopropoxide and pseudo-boehmite. The high-purity alumina for polishing developed and prepared in the past two years has been certified by the country.