Aluminum production

The main raw material for aluminum production is Bauxite. Aluminum is created according to the following formula: 4-7 tons of raw bauxite will produce = 2 tons of alumina oxide = 1 ton of aluminum.
According to the information above, about 7% of aluminum is on the surface of the earth.
Aluminum is separated from many other ores, but bauxite is the only metal ore used to separate aluminum. In bauxite contains 12-25% aluminum.
Bauxite is usually found in snow lice layers underneath a few layers of heavy waste.