Improved flotation method.

摘要

A method of improving the quality of froth removed from a minerals separation flotation cell (1) by providing converging side walls (2) to crowd the froth into a narrower chimney (4) and thereby increase the froth height. The cell is operated so that the pulp/froth interface is positioned to give a froth height to the overflow weir (5) greater than the natural froth height in a similar parallel sided flotation cell.