How do we make aluminum foil?

Aluminum foil is made through a process that begins with the extraction of aluminum from its ore, bauxite. The bauxite is first refined to produce aluminum oxide, which is then reduced to aluminum metal using the Hall-H茅roult process. The aluminum is then melted and cast into large ingots. These ingots are heated and rolled into thin sheets in a series of passes through large rolling mills. As the metal cools, it hardens, and the thickness of the sheet is progressively reduced. The final thin sheets are then cut and packaged as aluminum foil. This process requires precision and control to achieve the desired thickness and quality of the foil.