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.