Abstract
Abstract Work done on modelling the transport of various components through the froth phase will be reviewed with an emphasis on the author's work in this area. The plug flow of material through a column-type cell is described first, since it is the situation which can be modelled accurately and simply. A different approach is taken in attempts to describe the behaviour of conventional cells; a numerical solution of Laplace's equation allows the modelling of a frictionless inviscid froth through the froth chamber, while a three-stage horizontal cross-flow reactor model is required to produce a tractable model of real froth behaviour. The model is in terms of control variables available on the plant, such as gas rate, frothheight and froth stability, and is shown to produce an accurate model for the residence time distribution (RTD) of concentrate particles, leading to a model for the recovery of such particles over the froth phase. Insight obtained from the model has led to the development of improved methods for froth removal, and is used to place the optimisation of flotation cell operation on a rational basis.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
