In Dharavi, aluminum ... molten aluminum into a mold, which later solidify into shape. Recycling aluminum is much cheaper than extracting it. Aluminum extraction requires temperatures of 1,000 o C and ...

It employs the Hall–Héroult process for the production of aluminium which involves dissolving alumina in molten cryolite, and electrolysing the molten salt bath to obtain pure aluminium metal.

To reduce costs, powdered aluminium oxide is dissolved in molten cryolite. This ionic compound melts at a lower temperature than aluminium oxide. The oxygen reacts with the carbon anodes ...