In order to reduce energy consumptions, several process configurations are possible: pre-heating, multiple effect, thermal recompression, mechanical recompression...

Aluminium metal production comes from the electrolysis of alumina : a white powder with the following chemical formula Al2O3. The most common process for alumina production consists of dissolving alumina from bauxite ore through a chemical attack with caustic soda. Concentrated caustic liquor is mixed .....