Cryolite or synthetic cryolite is the electrolyte component used in the Hall-Héroult process for industrial production of aluminium. It is also commonly referred to as Secondary Cryolite, Crushed Bath, Bath Cryolite, Pure Bath, Bath and tapped Bath Material. It is generated during the aluminium smelting process as a result of high Sodium (Na) content in the alumina. Surplus cryolite is liquidly tapped and then crushed to be reused by other smelters or to compensate for electrolyte losses.
