a. glassb. scrap aluminumc. Al2 03d. bauxitee. clayf. rubber
Scrap aluminum by far. To get aluminum from an ore, it must be mixed with other salts and melted and a huge amount of electricity passed through the molten mixture to reduce the aluminum to the metallic state. A lot of energy needed, To melt scrap is somewhere around 5-10 % of the energy to make new from ore. Aluminum cannot be reduced by heating an ore with carbon like iron and many other metals.
