Presented at the Randol Innovations in Metallurgy Conference, Perth, Australia, August 2005

Michael Battersby, Michael Fletcher, Rainer Imhof, Adrian Singh and Franz Puder

ABSTRACT
Pneumatic flotation, as developed by Dr. Rainer Imhof, has been successfully deployed in the minerals and environmental industry for over fifteen years. A recent innovation – the use
of centrifugal forces in the separating vessel for rapid froth from tailings separation and removal – has added a new dimension to the technology. The Imhoflot G-Cell has
dramatically reduced the size of the flotation plant needed with the consequential reduction in capital required for its construction. This paper will detail the principles and development of the G-Cell and its first commercial installations at the Barbrook Gold Mine in South Africa and the Dorfner Kaolin Plant in Germany.

THE ADVANTAGES OF THE IMHOFLOT G-CELL PNEUMATIC FLOTATION PROCESS WITH CENTRIFUGAL FROTH REMOVAL – TWO CASE STUDIES