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Alumina Main Component[Mar 15,2019]
Alumina contains the elements aluminum and oxygen. If the bauxite raw material is chemically treated to remove oxides of silicon, iron, titanium, etc., the product obtained 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 at 950-1200 °C, and significant volume shrinkage occurs at the same time.