1111 E. Airline Hwy, Gramercy, LA 70052

How Aluminum is Made?

Aluminum is smelted from compounds of ore, specifically bauxite, that is most typically found in tropical areas. Railroads and trucking services work in tandem with excavation crews to bring bauxite for refining from even the most remote areas. Frequently, one of the largest hurdles in making aluminum is managing the logistics of getting the raw materials out of the ground and to where they need to be in the first place.

What are the Steps for Making Aluminum?

  1. bauxite is mixed with water, lime, and soda ash.
  2. The mixture is wet-ground, and a solution of caustic soda is added.
  3. Sodium aluminate is derived from digester tanks with the mixture injected into them under steam pressure. Heavier impurities settle to the bottom of each successive tank.
  4. Presses remove any finer impurities from the liquid skimmed from the top.
  5. Purified sodium aluminate is agitated by compressed air in six-story tanks and seeded with aluminum trihydrate.
  6. The crystals that fall to the bottom of this tank are thoroughly cleaned and heated to temperatures over 2000 degrees Fahrenheit in rotating kilns.
  7. The result is a powdered aluminum substance that is then smelted into the metallic aluminum we all use today.

Customers can be provided aluminum in both pure or alloy form per request.

What Energy Sources Help Make Aluminum?

The process of making aluminum takes a lot of energy. This energy can come from hydroelectric power plants, coal, and natural gas.

The Future of Aluminum Production

Atlantic Alumina works closely with the EPA to find solutions for pollution problems within the industry and beyond. We seek to be stewards of our environment, and therefore we want to work with new compounds to eliminate greenhouse gas emissions and lower energy costs overall during the smelting process.