The significance of froth stability in mineral flotation — A review

This paper presents a review of the published articles related to froth stability and its importance in mineral flotation. Froth structure and froth stability are known to play a significant role in determining the mineral grade and recovery achieved in a flotation operation. Froth stability is depending not only on the type and concentration of the frother but also on the nature and amount of the particles present in the system. To date, there is no specific criterion to quantify froth stability although a number of parameters are used as indicators of froth stability. Linking froth stability to the metallurgical performance is also challenged. Froth stability has a significant role in determining the mineral grade and recovery achieved in a flotation operation. Froth stability is depending not only on the type and concentration of the surfactant used but also on the nature and concentration of the particles present in the system. To date, there is no specific criterion to quantify froth stability although a number of parameters are used as indicators of froth stability. [Display omitted] ► The importance of froth stability in mineral flotation was reviewed. ► Froth stability determines mineral grade and recovery in flotation operations. ► Froth stability is depending on the concentration and type of frother and particles. ► There is no specific criterion to quantify froth stability.