TY - GEN
T1 - Adsorption of collectors on chalcopyrite surface studied by an AFM
AU - Zhang, Jinhong
AU - Zhang, Wei
PY - 2012
Y1 - 2012
N2 - An atomic force microscopy (AFM) has been applied to study the adsorption of collectors on chalcopyrite surface in aqueous solutions. AFM images showed that collectors absorbed on mineral surface in patches after the chalcopyrite sample was soaked in potassium ethyl xanthate (KEX) or potassium amyl xanthate (PAX) solutions at pH 11. At the same time, as shown by the obtained AFM force curves, the adhesion between the AFM tip and the substrate increased greatly due to the collector adsorption. Rinsing with ethanol removed the patch-like absorbate instantly from the chalcopyrite surface. Patch-like absorbate was also observed on chalcopyrite surface in the solutions of two industrial collectors, i.e., Col-1 and Col-2. The potential impact of this patches adsorption on chalcopyrite flotation is discussed.
AB - An atomic force microscopy (AFM) has been applied to study the adsorption of collectors on chalcopyrite surface in aqueous solutions. AFM images showed that collectors absorbed on mineral surface in patches after the chalcopyrite sample was soaked in potassium ethyl xanthate (KEX) or potassium amyl xanthate (PAX) solutions at pH 11. At the same time, as shown by the obtained AFM force curves, the adhesion between the AFM tip and the substrate increased greatly due to the collector adsorption. Rinsing with ethanol removed the patch-like absorbate instantly from the chalcopyrite surface. Patch-like absorbate was also observed on chalcopyrite surface in the solutions of two industrial collectors, i.e., Col-1 and Col-2. The potential impact of this patches adsorption on chalcopyrite flotation is discussed.
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M3 - Conference contribution
AN - SCOPUS:84860749446
SN - 9780873353397
T3 - Separation Technologies for Minerals, Coal, and Earth Resources
SP - 65
EP - 73
BT - Separation Technologies for Minerals, Coal, and Earth Resources
T2 - International Symposium on Separation Technologies for Minerals, Coal, and Earth Resources, Part of the 2011 SME Annual Meeting
Y2 - 27 February 2011 through 2 March 2011
ER -