Brown fused alumina is a kind of artificial corundum produced by high temperature smelting of natural bauxite. Although the main component is Aluminium Oxide, it still contains a lot of other chemical components such as silica, iron oxide, titanium oxide, etc.

Brown fused alumina shows blue after calcination at 1350℃ temperature. The impurities existed in the grains will be separated out & vaporized . The surface of each particle changes coarser, improves the hydrophilicity greatly. After 1350℃ calcinations ,cracks from crushing and crystal cooling proces

SEPPE Calcined Brown Fused Alumina is calcined at the high temperature, and with the anneal treatment.

High temperature calcined brown fused alumina/high heating brown fused alumina is the processing with brown fused alumina above in high temperature heating.The single crystal of brown fused alumina is increased and polycrystal of brown fused alumina is decreased.