Entrainment and True Flotation of a Natural Complex Ore Sulfide
A. ABIDI1, K. ELAMARI2, A. BACAOUI3, A. YACOUBI3
1Institute des Mines de Marrakech, Morocco
2Laboratoire Géoressources, URAC 42, BP 549, Av Abdelkarim Elkhattabi, Guéliz, 40000 Marrakech, Morocco
3Université Cadi Ayad, Morocco
Keywords: froth flotation, true flotation, entrainment, potassium amyl xanthate, Aerophine 3418A, complex ore sulfide
Abstract
This study attempts to assess the contribution of entrainment and true flotation in the overall recovery by the laboratory tests performed on a natural complex sulphide ore, provided by la Compagnie Minière des Guemassa (Morocco), and the effect of two different collectors, Potassium Amyl Xanthate (PAX) and Sodium di–isobutyl di-thiophosphinate (Aerophine 3418A), on the two contributions. Overall recovery and true recovery were fitted to first kinetic model and modified flotation parameters were calculated to measure of flotation separation selectivity of chalcopyrite, galena and sphalerite over gangue and pyrrhotite. To estimate the entrainment, Ross method was the most suitable in the case of complex sulphide ore with high content of pyrrhotite. Trahar method overestimates the effect of entrainment.
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