What is the process of aluminum extraction?

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Accepted Answer

Aluminum extraction involves mining bauxite ore, refining it to alumina, and then reducing it to aluminum through electrolysis.

Bauxite Mining: Bauxite, the primary ore of aluminum, is extracted from open-pit mines, primarily found in tropical and subtropical regions.
Bayer Process: The bauxite is crushed and treated with sodium hydroxide to produce alumina (aluminum oxide) through a process called the Bayer process.
Electrolytic Reduction: Alumina is then subjected to electrolysis in a molten cryolite bath, where aluminum metal is separated from oxygen.
Hall-Héroult Process: This electrolytic reduction process, known as the Hall-Héroult process, requires significant energy, making it crucial to optimize energy use.
Recycling: Aluminum can be recycled indefinitely without loss of quality, making recycling a vital part of the aluminum industry.

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