Abstract: The structure and technique feature of cyclonic-static micro bubble flotation column are described.The cyclonic-static micro bubble flotation column was used in the research on the column flotation process for a Shangdong gold ore.The results indicate that even after the elimination of one scavenging and two cleaning steps from the flowsheet used on site, a concentrate that can satisfy the cyanidation requirement can be achieved, and what's more, the recovery exceeded that of the site flotation.

Key words: Cyclonic-static micro bubble flotation column, Gold ore, Flotation process