کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10279736 | 465421 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Correlation between copper-activated pyrite flotation and surface species: Effect of pulp oxidation potential
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The effect of pulp oxidation potential, Eh, on the flotation of copper-activated pyrite at pH 9.0 in the presence of xanthate was investigated. It was found that pyrite recovery is at a maximum value when the Eh during conditioning is approximately 35Â mV (SHE), but decreases at lower and higher Eh values. Solution and surface analytical techniques (EDTA extraction, and UV-visible and X-ray photoelectron spectroscopies) were used to explain the trends observed in the pyrite recovery with Eh. The increase in pyrite recovery with increasing Eh values has been attributed to an increase in xanthate adsorption at the pyrite surface while the decrease in recovery at high Eh values is the result of an increase in the proportion of surface iron oxidation species covering the hydrophobic species.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 18, Issue 12, October 2005, Pages 1208-1213
Journal: Minerals Engineering - Volume 18, Issue 12, October 2005, Pages 1208-1213
نویسندگان
S. He, D. Fornasiero, W. Skinner,