Seller naomi1989

our self-developed purification technology, by strictly control to the raw material and produce process, get the alumina has the advantages of high purity and density, mainly used for kyropoulos method, efg method, tgt method, czochralski method etc. to produce large size sapphire crystals. type alumina crystalline phase a-al2o3 appearance powder,ball,pellet and crystal bulk density (g/cm3) ----- ---- lump density (g/cm3) ?3.75 al2o3 content ( pourcent) >99.999 si (ppm) ?2.5 na (ppm) ?1 fe (ppm) ?1 ca (ppm) ?1 mg (ppm) ?1 cu(ppm) ?1