Froth flotation : a century of innovation by Maurice C. Fuerstenau, Graeme Jameson, Roe-Hoan Yoon

By Maurice C. Fuerstenau, Graeme Jameson, Roe-Hoan Yoon

''Froth Flotation: A Century of Innovation comprehensively describes state of the art study and perform in mineral froth flotation a century after its creation. well-known specialists from world wide offer in-depth assurance on many elements of flotation, together with the ancient features; basics; chemistry; flotation cells, modeling, and simulation; and flotation plant perform. This commemorative Read more...

summary: ''Froth Flotation: A Century of Innovation comprehensively describes cutting-edge learn and perform in mineral froth flotation a century after its advent. famous specialists from all over the world supply in-depth insurance on many points of flotation, together with the old facets; basics; chemistry; flotation cells, modeling, and simulation; and flotation plant perform. This commemorative quantity is a useful reference for execs, researchers, and graduate students.''--BOOK JACKET

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These results clearly indicate that, with the exception of covellite, sulfide minerals that display a rest potential below the corresponding reversible potential for the oxidation of the collector to its disulfide (dixanthogen, in this case) will react with thiols, forming metal tholates. Those sulfide minerals whose rest potentials are above this value oxidize the thiol to its disulfide, and this product is now accepted as the collecting species in these systems. Similar results were reported for the diethyl dithiocarbamate–sulfide systems.

Because of his concern with regard to the equations connecting electrophoretic mobilities to zeta potentials, the distinguished surface and colloid chemist, Victor LaMer (1967), commented: It is for these reasons that I feel strongly that no scientific purpose is served by converting mobilities into zeta potentials until the more complicated connecting equations have been verified. Of course if you have something to sell, zeta potential is a much better advertising catch word than is electrophoretic mobility.

W. Fuerstenau first proposed that similar phenomena can take place at the mineral–water interface. In their 1955 paper, Gaudin and Fuerstenau termed these surface aggregates hemimicelles because the charged heads would be oriented toward the mineral surface (at least until the zeta potential is reversed). As the adsorption density increases in the Stern plane, the adsorbed surfactant ions come sufficiently close together that they begin to associate into twodimensional aggregates similar to micelle formation in bulk solution.

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