کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
233514 | 465350 | 2012 | 9 صفحه PDF | دانلود رایگان |

Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, atomic absorption spectroscopy (AAS) and X-ray photoelectron spectroscopy (XPS) have been employed to characterise the surface layer and compound formation during the interaction of n-octanohydroxamate with chrysocolla and malachite surfaces. The flotation response of a single mineral chrysocolla–quartz sand sample and mixed chrysocolla–malachite–quartz sand sample using n-octanohydroxamate collector has been investigated. Recoveries of 95% were achieved in bench-scale flotation testing, with the best Cu grades achieved at pH > 9. Long conditioning times adversely affected flotation performance. Moderate recovery of impurity minerals in the mineral and sand was also observed.
Curve A is the Cu recovery for sequential AM2 addition, B is for a single dose at the start of the flotation experiment, and C is dosed with AM2 and stirred for 30 min prior to commencement; pH 10.Figure optionsDownload as PowerPoint slideHighlights
► Recoveries of >95% in bench-scale testing achieved for a chrysocolla–quartz sample.
► Best Cu grades achieved at pH > 9.
► Long conditioning times adversely affected flotation performance.
► Moderate recovery of impurity minerals in sand was observed.
Journal: Minerals Engineering - Volumes 36–38, October 2012, Pages 12–20