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There is currently no standard approach to laboratory flotation testing and interpretation. The deficiency stems, in part, from the difficulties in quantifying the recovery of mineral particles by hydraulic entrainment (Re) and the recovery of collected mineral particles across the froth zone (Rf) of a laboratory flotation cell. For lack of alternatives, most practitioners ignore entrainment (Re = 0)...
This paper presents a critical review of the role of froth recovery in laboratory flotation kinetics tests. By conducting tests in the standard lab equipment (the Denver cell), it is demonstrated that, for typical scraping rates, the froth recovery is significantly lower than the 100% that is commonly assumed when interpreting lab kinetics data. Furthermore, it is shown that the curve of overall rate...
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