Abstract
Froth forms an important phase in flotation, upon which are dependent the final yield parameters. Flotation froths are three-phase froths and the solid particles exercise an influence in stabilizing or destabilizing the froths depending on their nature i.e. the degree of hydrophobicity, size and concentration of fines. This paper deals with froth characteristics in flotation tests carried out on lead-zinc and copper ores with four different frothers. The results are analysed by grade-recovery relationships.
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