quote: Your also no Structural Analyst. Or Mechancal Engineer.
quote: The oxygen then bonds to the aluminum to form aluminum oxide, also known as alumina. It is cheaper to recycle alumina back to aluminum than it is to refine aluminum from bauxite ore, which is another element contributing to its efficiency.
quote: On average, around the world, it takes some 15.7 kWh of electricity to produce one kilogram of aluminium from alumina. Design and process improvements have progressively reduced this figure from about 21kWh in the 1950's.