TY - GEN
T1 - An AFM study of collectors' adsorption on minerals in copper/molybdenum flotation
AU - Zhang, J.
AU - Zhang, W.
PY - 2012
Y1 - 2012
N2 - An atomic force microscopy (AFM) has been applied to study the adsorption of collectors on mineral surfaces in a copper/molybdenum flotation system. AFM images show that collectors absorb on chalcopyrite surface in patches at pH 11. A study of temperature effect on surface morphology excludes the possibility that these patches are nanobubbles forming on hydrophobized mineral surface. Hydrocarbon oil absorbs on molybdenite quickly, while KEX (potassium ethyl xanthate) has little affinity for molybdenite. Pyrite is much more reactive in water and its surface is easily coated in Ca(OH) 2 solutions at pH 11. Based on the obtained AFM images, the adsorption of chemicals on mineral surface and its impact on copper/molybdenum flotation were discussed.
AB - An atomic force microscopy (AFM) has been applied to study the adsorption of collectors on mineral surfaces in a copper/molybdenum flotation system. AFM images show that collectors absorb on chalcopyrite surface in patches at pH 11. A study of temperature effect on surface morphology excludes the possibility that these patches are nanobubbles forming on hydrophobized mineral surface. Hydrocarbon oil absorbs on molybdenite quickly, while KEX (potassium ethyl xanthate) has little affinity for molybdenite. Pyrite is much more reactive in water and its surface is easily coated in Ca(OH) 2 solutions at pH 11. Based on the obtained AFM images, the adsorption of chemicals on mineral surface and its impact on copper/molybdenum flotation were discussed.
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M3 - Conference contribution
AN - SCOPUS:84866035528
SN - 9781622760893
T3 - 2012 SME Annual Meeting and Exhibit 2012, SME 2012, Meeting Preprints
SP - 547
EP - 552
BT - 2012 SME Annual Meeting and Exhibit 2012, SME 2012, Meeting Preprints
T2 - 2012 SME Annual Meeting and Exhibit 2012, SME 2012
Y2 - 19 February 2012 through 22 February 2012
ER -