The processing of a low-grade gold refractory sulfide ore by flotation-biooxidation-cyanidation route | ||
| International Journal of Mining and Geo-Engineering | ||
| مقاله 2، دوره 59، شماره 2، تابستان 2025، صفحه 119-123 اصل مقاله (760.64 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijmge.2025.396215.595265 | ||
| نویسندگان | ||
| Sepide Sedighi1؛ Ali Ahmadi* 2 | ||
| 1Department of Mining Engineering, Isfahan University of Technology, Isfahan, Iran | ||
| 2Department of Mining Engineering, Isfahan University of Technology, Isfahan, Iran | ||
| چکیده | ||
| By depletion of high-grade and easy-to-treat gold ores and the increase in gold price, the extraction of gold from low-grade and refractory ores, such as sulfide ores has been given attention. Biooxidation is one of the efficient, relatively low-cost and environmentally friendly processes to enhance gold extraction by releasing fine gold encapsulated in sulfide phases. So, in this research, the efficiency of concentrate biooxidation-flotation system in increasing gold recovery from sulfide-refractory low-grade ores was investigated. Biooxidation experiments with mesophilic and moderate thermophilic microorganisms were conducted on the flotation concentrate. Finally, cyanidation experiments were conducted on the flotation concentrate, and biooxidized flotation concentrate. Gold recovery from non-biooxidized flotation concentrate was 63.59%, while it increased to 80.21% after biooxidation with mesophilic microorganisms and to 79.84% after biooxidation with moderate thermophilic microorganisms. | ||
| کلیدواژهها | ||
| Biooxidation؛ Concentrate؛ Microorganism | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 472 تعداد دریافت فایل اصل مقاله: 451 |
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