Sell calcined alumina @China (Mainland)

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

the soda(Na2O) content will be control in the range of 0.1%-0.02%.

and the alpha-alumina will reach 99%.

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

 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

AL2O3%:   99.5

Na2O%:0.2

SiO2%:0.013             

Fe2O3%:0.017

a-AL2O3%:93-94

SpecificGravity(g/cm3):3.95