Implementing a true circular economy for metals is a priority . These materials retain their physical and chemical properties during recycling.
The advantageous recycling of aluminum
An example of this type of material is aluminum. Obtaining primary aluminum (from virgin raw materials) requires three main steps: extraction of the mineral rock, bauxite , through open-pit mining in tropical regions. The Bayer process , which involves heating the bauxite with sodium carbonate at high temperatures, produces alumina (aluminum oxide). Elemental aluminum is then separated from the oxide using electrolytic cells with molten cryolite.
The production of one ton of primary aluminum requires 15 megawatts of energy (…) and results in the direct…
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