calcined alumina powder;CAS:1302-74-5/1344-28-1

It has high melting point, is thermally stable, has diamond hardness. Moreover, it has high electric resistance and is stable against alids and alikalis. Used as raw materials for aluminous refractory, ceramic product, sparking plugs and grinding material. Customers choose the products according chemical composition and physical properties.

Calcined alumina is used as raw materials for aluminous refractory, ceramic product, sparking plugs and grinding material. 

alcined alumina is raw materials for top class aluminous refractory, ceramic, sparking plugs and so on. 

Al2O3:    99.6%,  SiO2:   0.025%

Fe2O3: 0.02%  ,  Na2O: 0.25

Heating loss: 3.5%

+130 mesh: 5.0% max

-325 mesh: 15% max

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