Types of Alumina
There are several different types of alumina:
- Smelter Grade Alumina (SGA) or metallurgical grade alumina – used for the production of primary aluminium metal
- Refractory grade alumina’s – of varying purities, used in the production of refractory products and abrasives.
- High purity alumina – used for alumina chemicals, advanced refractories, cosmetics etc.
Additionally un-calcined hydrate (Al2O3.3H2O) is often sold directly to chemical and high purity applications where is further refined or processed.