CONTROL ALTERNATIVES FOR FLOTATION COLUMNS

The optimisation -of flotation column operation relies mostly on the i dentification of the key variables to be controlled, how accurately th ey can be measured and how coordinately they can be dynamically influe nced. Even though substantial efforts have been made during the last y ears, there is still a lack of process knowledge, which partially inhi bits further improvement. In this work some advances in solving measur ement problems of operating variables, in obtaining and using multivar iable dynamic models, and the experience of testing different control strategies and control algorithms on flotation columns, are discussed.