This work describes a comprehensive characterization of the factors controlling the floatability of free gold from flotation test using reagents (collectors) at plant concentration levels. A relationship between the collectors loadings on gold particles and their surface composition has been established. The findings of this study show that silver activates gold flotation and there is a strong correlation between the surface concentration of silver and the loading of certain collectors. The organic surface analysis was done by ToF-SIMS while the inorganic surface analysis was carried out by time-of-flight laser ionization mass spectrometry (ToF-LIMS). The developed testing protocol based on ToF-LIMS and ToF-SIMS complementary surface analysis allows for optimization of the flotation scheme and hence improved gold recovery. (C) 2004 Elsevier B.V. All rights reserved.
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SUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USASUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USA
Milillo, Tammy M.
Miller, Mary E.
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Michigan Technol Univ, Res Inst, 3600 Green Ct 100, Ann Arbor, MI 48105 USASUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USA
Miller, Mary E.
Fischione, Remo
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CUBRC Inc, 4455 Genesee St, Buffalo, NY 14225 USASUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USA
Fischione, Remo
Montes, Angelina
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SUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USASUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USA
Montes, Angelina
Gardella, Joseph A., Jr.
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SUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USASUNY Buffalo, Univ Buffalo, Dept Chem, 359 Nat Sci Complex, Buffalo, NY 14260 USA