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OPTIMISATION OF ALUMINA PRECIPITATION USING MATHEMATICAL SIMULATION

Cresswell, P.J.and Nguyen, T.

A major concern of all alumina plant operators is to maximise the productivity of their plants while maintaining or improving the quality of their product. In most cases this requires improvements in precipitation.

A mathematical model of alumina precipitation, based on particle number balance, has been developed which can be used to predict both product yield and quality.

The model is flexible and can be used to simulate a wide range of precipitation technologies. The model is described and a number of simulation examples discussed.