What it is
Bauxite is the ore refined into alumina and then smelted into aluminium — a lightweight, corrosion-resistant metal used everywhere from cans to aircraft.
Why it matters
Aluminium is one of the few critical materials with a working recycling industry. Secondary (recycled) aluminium uses about 5% of the energy of primary production.
Circular challenges
Whether bauxite / aluminium re-enters the economy at end-of-life is mostly settled at the design stage. These are the recurring blockers.
Alloy contamination
Mixing different aluminium alloys during collection forces recyclers to downcycle into cast alloys instead of the higher-value wrought alloys needed for sheet and extrusions.
Composite parts
Aluminium bonded to plastics, foams or other metals in packaging and vehicles is hard to separate, lowering yield.
Sorting at scale
End-of-life vehicles and buildings need automated sorting (LIBS, XRF) to keep alloy families separate; without it, value is lost on every pass.