How is aluminum extracted from ore?
Quick Answer
Aluminum is usually extracted from bauxite using the Bayer process and then refined by electrolysis in the Hall-Héroult process. The metal is not commonly found in pure form because it is highly reactive.
The Full Story
Aluminum production begins with bauxite, which is processed in the Bayer process to make purified aluminum oxide, or alumina. The Hall-Héroult process then uses molten cryolite and electricity to reduce alumina into aluminum metal. This method, developed independently by Charles Martin Hall and Paul Héroult in 1886, made aluminum much cheaper to produce. Before that, aluminum was once considered a precious metal. Today it is one of the most widely used lightweight metals in transport, packaging, and construction.
Key Facts
YouTube Angle
Suggested video title for this topic:
"Why aluminum used to be more valuable than gold"
Was this answer helpful?
Tap a reaction — it helps us pick what to cover next.