Mercury Removal From Gold Cyanide Leach Solution (554eef23-ca71-4903-b0f8-f5bd6f45d18d)
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 6
- File Size:
- 379 KB
- Publication Date:
- Jan 1, 1985
Abstract
The Bureau of Mines investigated selective extraction of Au and Ag from a low-grade Au ore containing Hg. Gold and silver were extracted from the ore in cyanide slurries, and Hg extraction was suppressed with sodium or calcium sulfide. Maximum Au extraction and minimum Hg extraction were obtained using solutions containing 17 kg NaCN/t of solution (0.34 lb NaCN/st). Increasing the cyanide concentration increased Hg extraction without increasing Au extraction. Mercury extraction from the ore was suppressed with 0.5-2.9 kg CaS/kg Hg (0.5-2.9 lb/lb) in the ore. Gold-to-mercury ratios of 100:1 to 400:1 were obtained in the leach solution, and on the activated carbon in a CIP circuit.
Citation
APA: (1985) Mercury Removal From Gold Cyanide Leach Solution (554eef23-ca71-4903-b0f8-f5bd6f45d18d)
MLA: Mercury Removal From Gold Cyanide Leach Solution (554eef23-ca71-4903-b0f8-f5bd6f45d18d). The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1985.