Aluminum Oxide

Abstract The article contains sections titled: 1 General Aspects 1.1 Aluminum Hydroxides 1.2 Aluminum Oxide Hydroxides 1.3 Aluminum Oxide, Corundum 1.4 The Al 2 O 3 –H 2 O System 1.5 Thermal Decomposition of Aluminum Hydroxides 1.6 Aluminates and Related Compounds 2 Bauxite, the Principal Raw Material 2.1 Definition and Geology 2.2 Composition and Properties 2.3 Genesis of Bauxites 2.4 Major Bauxite Deposits 2.5 Economic Aspects 3 Bayer Process 3.1 History and Procedure 3.1.1 Bauxite Preparation 3.1.2 Digestion 3.1.3 Equipment 3.1.4 Residue Separation 3.1.5 Precipitation 3.1.6 Impurities 3.1.7 Calcination 3.1.8 Evaporation 3.2 Bauxite Residue 3.2.1 Disposal of Bauxite Residue 3.2.2 Remediation of Bauxite Residue Storage Facilities 3.2.3 Uses of Bauxite Residue 3.3 Energy Aspects 3.4 Economic Aspects 4 Other Processes for Alumina Production 4.1 Raw Materials 4.2 Alkaline Processes 4.3 Acid Processes 5 Metallurgical Alumina 5.1 Alumina Properties Required for Smelting 5.2 Typical Specifications for Metallurgical Alumina 6 Industrial Alumina Chemicals 6.1 Aluminum Hydroxides 6.2 Adsorbent and Catalytic Aluminas 6.2.1 Preparation of Activated Aluminas 6.2.2 Adsorbent Applications 6.2.3 Catalytic Applications 7 Specialty Calcined Alumina 7.1 Ceramic Use of Alumina 7.2 Refractory Uses of Alumina 7.3 Fused Alumina 7.4 Tabular Alumina 8 Toxicology and Industrial Hygiene List of Abbreviations References