Bauxite is a naturally occurring, heterogeneous material composed primarily of one or more aluminum hydroxide minerals, plus various mixtures of silica, iron oxide, titania, aluminosilicate, and other impurities in minor or trace amounts
Bauxite is a naturally occurring, heterogeneous material composed primarily of one or more aluminum hydroxide minerals, plus various mixtures of silica, iron oxide, titania, aluminosilicate, and other impurities in minor or trace amounts
90% of the world's bauxite reserves are concentrated in tropical and subtropical regions. Large blanket deposits are found in West Africa, Australia, South America, and India as flat layers lying near the surface, extending over an area that can cover many square kilometers.
Bauxite appears dull in luster and is reddish-brown, white, or tan.
Bauxite ore is the world's main source of aluminum Bauxite is a rock formed from a reddish clay material called laterite soil and is most commonly found in tropical or subtropical regions.
Bauxite Mineral. Bauxite is a mixture of aluminum oxide and hydroxides with a hardness of 1-3 and a density of 2.5-3.5 g/cm3.
Bauxite is the most common aluminum ore. Approximately 98% of primary aluminum production is based on bauxite. In the former Soviet Union, alunite and kaolinite are also used in small proportions for aluminum production.
Contents | Grade A % | Grade B % | Grade C % |
---|---|---|---|
Al2O3 | 46% min | 44% min | 42% min |
SiO2 | 5% max | 7% max | 7% max |
Fe2O3 | 15% max | 18% max | 25% max |
TiO2 | 3.5% max | 3.5% max | 3.5% max |
Moisture | 10% max | 10% max | 10% max |
Size 0 - 100 mm | 95% | 95% | 95% |
Monohydrates | 3% max | 3% max | 3% max |