Mostly aluminum is produced in two ways.
1. Primarily Production Process
1. By refining aluminum from grinding and extracting from bauxite ore - Bayer process
2. By using reduction process for crystalline alumina - Hall-Héroult process
2. Secondary Production Process
1. By doing pre-treatment of scraps such as cleaning and sorting
2. By process of smelting, refining or alloying of aluminum
Bayer process: Refining Bauxite
In this process, the bauxite ore is dried, crushed and ground into a powder. It is then mixed with preheated spent solution. Lime is added to increase the solubility of alumina and the resulting mixture is pumped to digesters along with a solution of caustic soda to extract the alumina. The operation proceeds at elevated temperatures (using high temperature steam) and pressures in
