The two main ways to apply this process are the Soderberg and prebake methods.  
The two main ways to apply this process are the Soderberg and prebake methods.  High electrical power requirements and the disposition of toxic flouride waste products have been a problem since its discovery in 1886.  The ore is purified in sodium hydroxide, and carbon dioxide is added in order to precipitate the hydroxide of the desired metal, which is decomposed by heating.  FTP, name this chemical process that uses an electrolytic cell to extract from bauxite its product of aluminum.
The two main ways to apply this process are the Soderberg and prebake methods.  
Hall-Heroult process