Aluminium Bauxite

Aluminium BauxiteAluminium is found in the form of oxides and never occurs naturally in its pure form. It is earth's most abundant metallic element, making up approximately seven to eight per cent of the planet's outer crust.
Should we continue to mine Bauxite at the present rate the deposits will last 200- 400 years (this is excluding any increase in the present recycling rate). Bauxite that is predominantly found in tropical and sub-tropical regions of the world is the most commercially viable source of Aluminium. It can be found as rocks or granules and, depending on its exact composition, it can also vary in colour.
Bauxite is a Sedimentary rock. Sedimentary rocks are derived from decomposed or weathered older rocks, which are transported by water, ice or wind to some other place and deposited there. Bauxite is Chemical Sediment, which means that it is formed from substances dissolved in water that have precipitated, either due to evaporation or to a change in the chemical composition of the solution in question.
The ore occurs near the surface, and makes the deposits suitable for mining by simple opencast methods. No drilling or blasting is generally required because of the soft, earthy nature of the ore. This make is generally less expensive to mine that other metals.
Deposits may be located in areas varying from gentle undulating to rugged, hilly terrain involving major capital expenditures in creating a system to transport the ore.
Even though the ore is generally easy to mine, the process to extract the Aluminium from it is very complex.
The process of making metallic Aluminium is carried out in two successive stages:
1. The chemical process to extract anhydrous Aluminium oxide or alumina (A12O3) from the ore.
2. The electrolytic process to reduce the alumina to pure Aluminium

For Aluminium Extrusions Contact Inal Metals North

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