Cerium oxide 

 Yellow or brown to help cerium oxide powder. Density 7.13g/cm3. Melting point 2397 ℃. Insoluble in water and alkali, slightly soluble in acid. In 2000 ℃ temperature and pressure 15Mpa, cerium oxide has been used hydrogen reduction of cerium oxide, free at 2000 ℃ temperature, the pressure in the 5Mpa stress free, cerium oxide was slightly yellowish red, and pink, its performance do polishing materials. 
 Specifications: according to purity is divided into: low net: no more than 99% purity, purity: 99.9% ~ 99.99%, 99.999% ultra pure divided according to size: coarse, micron, sub-nanometer, nanoscale Safety Note: Non-toxic, tasteless, non-irritating, safe, reliable, stable performance, with no water and organic chemical reaction, is high-quality glass fining agents, bleaching agents and chemical additives. 

 Rare earth major role in a variety of glass 

 The role of rare earth polishing 
 With rare earth polishing powder polishing speed, high finish and long life benefits, and traditional polishing powder - iron than Pink, no pollution, easy to remove from the stained material on the advantages. Cerium oxide polishing powder polishing lenses, one minute to complete the work, such as iron oxide polishing powder you need 30 to 60 minutes. So, has to use less rare earth polishing powder, polishing and polishing speed advantages of high efficiency. And change the polishing quality and operating environment. Glass is generally rare earth polishing powder cerium-rich oxide is mainly used. The reason why cerium oxide is very effective polishing compound, because it is the chemical decomposition and mechanical friction while two forms of polished glass. Cerium polishing powder used in cameras, camera lenses, television tubes, glasses and other polishing. Currently, there are dozens of rare earth polishing powder factory, producing more than ten tons of scale. Kiyomi joint Baotou rare earth polishing powder Tianjiao Co., Ltd. is China's largest rare earth polishing powder factory, with annual production capacity of 1200 tons, the products are sold abroad. 


 Yttrium oxide (Y2o3) 99.9% 280 元 / kg 99.99% 330 yuan / kg 
 Lanthanum oxide (La2o3) 99.9% 120 元 / kg 99.99% 150 yuan / kg 
 Cerium oxide (Ceo2) 99.9% 130 元 / kg 99.99% 320 yuan / kg 
 Praseodymium oxide (Pr6on) 99.9% 500 元 / kg 99.99% 700 yuan / kg 
 Neodymium oxide (Nd2o3) 99.9% 750 元 / kg 99.99% 1000 yuan / kg 
 Samarium oxide (Sm2o3) 99.9% 150 元 / kg 99.99% 260 yuan / kg 
 Europium oxide (Eu2o3) 99.9% 13500 元 / kg 99.99% 17500 yuan / kg 
 Gadolinium oxide (Gd2o3) 99.9% 320 元 / kg 99.99% 450 yuan / kg 
 Terbium oxide (Tb4o3) 99.9% 13500 元 / kg 99.99% 17000 yuan / kg 
 Dysprosium oxide (Dy2o3) 99.9% 8500 元 / kg 99.99% 11500 yuan / kg 
 Holmium oxide (Ho2o3) 99.9% 2800 元 / kg 99.99% 3500 yuan / kg 
 Erbium oxide (Er2o3) 99.9% 750 元 / kg 99.99% 1200 yuan / kg 
 Thulium oxide (Tm2o3) 99.9% 6500 元 / kg 99.99% 9500 yuan / kg 
 Ytterbium oxide (Yb2o3) 99.9% 350 元 / kg 99.99% 500 yuan / kg 
 Lutetium oxide (Lu2o3) 99.9% 12000 元 / kg 99.99% 14500 yuan / kg