Main component of oxidized hexagonal aluminum bar

The oxidized hexagonal aluminum bar is obtained by chemically treating the bauxite raw material to remove oxides of silicon, iron, titanium, etc., and is a high purity alumina raw material, and the Al2O3 content is generally above 99%. The mineral phase consists of 40% to 76% γ-Al2O3 and 24% to 60% α-Al2O3. γ-Al2O3 can be converted to α-Al2O3 (corundum) at 950-1200 °C, and significant volume shrinkage occurs at the same time.

oxidized hexagonal aluminum bar

Containing elements

Aluminum and oxygen

Chemical properties

Acid reaction

Al2O3 + 6HCL == 2AlCl3 + 3H20

Al2O3 + 6H+ == 2Al3+ + 3H2O

Reaction with alkali

Al2O3 + 2NaOH == 2NaAlO2 + H2O

Al2O3 + 2OH- == 2AlO2- + H2O

Author: Frank

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