Effect of Seasonal Work on Residual Cyanide Removal From Leach Heaps in Sub-Arctic Conditions
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Bakshi, A. K. ; Nelson, M. G. (1995). Effect of Seasonal Work on Residual Cyanide Removal From Leach Heaps in Sub-Arctic Conditions.
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Bakshi, A. K. ; Nelson, M. G. (1995). Effect of Seasonal Work on Residual Cyanide Removal From Leach Heaps in Sub-Arctic Conditions.
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Organization: Society for Mining, Metallurgy & Exploration
Pages: 7
Publication Date:
Jan 1, 1995
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Abstract
Abstract
| In cold regions, rinsing of spent cyanide from leach heaps is stopped during winter and is resumed again after the snow melts. The effect of this idle time on the overall removal process was studied in this experiment. Samples were collected for rinsing tests from one heap at a gold mine near Fairbanks, Alaska. Continuous and interrupted rinsing of this sample were carried out in test columns. The rinse solution was analyzed at regular intervals to determine the rate of cyanide removal from the solids. It was found that total cyanide concentration per rinse cycle for interrupted rinsing test was higher than for the corresponding continuous rinsing test. As a result, interrupted rinsing required less rinsing cycles than continuous rinsing. |
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