Gas dispersion measurements in flotation machines

CIM Bulletin, Vol. 95, No. 1066, 2002

C.O. Gomez, J.A. Finch, McGill University, Montreal, Quebec

Gas dispersion in flotation defines the efficiency of the process once the chemistry has been established. There are three measurements, superficial gas velocity, gas holdup, and bubble size, which along with the derived quantity bubble surface area flux, are used to define “gas dispersion.” Sensors for measuring gas dispersion in industrial machines have been developed. This communication describes the working principle of the techniques and illustrates their potential to detect problems and to improve the operation of individual cells, banks and circuits.