Bauxite & Alumina

Aluminium is the third most abundant element in the earth’s crust. There are various different minerals. Bauxite is the most common raw material used to produce Alumina (Al2O3) for Aluminium metal production. Bauxite deposits are mainly found in a wide belt around the equator. Bauxite does not have a specific composition. It is a mixture of hydrous Aluminium oxides, Aluminium hydroxides, clay minerals and insoluble materials such as Quartz, Hematite, Magnetite, Siderite and Goethite. The Aluminium minerals in Bauxite can include: Gibbsite Al(OH)3, Boehmite AlO(OH), and, Diaspore, AlO(OH).
The raw material required to produce primary Aluminium is Aluminium oxide, also called Alumina. It is a white powder produced by the refining of Bauxite. Some two tonnes of Alumina are needed to produce one tonne of Aluminium through an electrolytic process. Alumina is also used for a number of other purposes, such as water purification and as an additive in various applications.
Iran is the biggest Aluminium supplier in Middle East and has a great potentiality for exporting. It’s Marjan Mineral Company’s great honor to provide all necessary things for exporting of Aluminium. Read more . . .

Bauxite, Alumina & Aluminium Usages:
Bauxite
Globally, most Bauxite mined is converted to Alumina for the production of Aluminium metal. A minor proportion goes to non-metal uses in various forms of specialty Alumina while the remainder is used for non-metallurgical Bauxite applications.
Alumina

• The great majority of Aluminium oxide is consumed for the production of Aluminium, usually by the Hall–Heroult process.
• Filler: Being fairly chemically inert and white, Aluminium oxide is a favored filler for plastics. Aluminium oxide is a common ingredient in sunscreen and is sometimes present in cosmetics such as blush, lipstick, and nail polish.
• Pyrotechnics: Strontium compounds burn to produce a brilliant red flame and so are used in pyrotechnic materials, such as flares and fireworks. Read more . . .