DEVELOPMENTS IN CALCINATION TECHNOLOGY FOR SMELTER GRADE ALUMINA

Raahauge, B.E. and Mills, G.J.

Stationary Calciners of different design and technology have gradually replaced Rotary Kilns for production of Smelter Grade Alumina (SGA).

The Gas Suspension Calciner (GSC) Units now being built, incorporate about 75 years of technology experience from design, operation and maintenance of Stationary Calciners.

The features of the new generation of Gas Suspension Calciners will be presented with respect to Alumina Quality, Capex, Opex and Environmental Compliance.