| Issue |
E3S Web Conf.
Volume 192, 2020
VIII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2020)
|
|
|---|---|---|
| Article Number | 02020 | |
| Number of page(s) | 6 | |
| Section | Problems of Complex Processing of Mineral Raw Materials and New Technologies of Mineral Processing | |
| DOI | https://doi.org/10.1051/e3sconf/202019202020 | |
| Published online | 30 September 2020 | |
Research of combined reagent schemes of activation leaching of gold from oxidized ores of the Malmyzh field
Mining Institute FEB RAS, 51 Turgenev st., Khabarovsk, 680000, Russia
* Corresponding author: sekisovag@mail.ru
The results of studies of the cyanide and an alternative methods for leaching gold and silver from oxidized ores of the Malmyzh field are presented. The possibility of recovering gold and silver from oxidized porphyry copper ores by thiosulfate solutions in agitation and percolation modes without intensifying the process – heating the solutions and adding copper ions – has been shown. Also, in a separate cycle – copper leaching with low-concentration sulfuric acid-sulfite solutions with additional opening of the silicate matrix with ammonium hydrofluoride – has been studied. The possibility of using ammonia-thiosulfate leaching in percolation mode has been investigated.
Key words: Malmyzh field / oxidized ores / gold / silver / copper / cyanide leaching / ammonia-thiosulfate leaching / sulfuric-sulfite leaching
© The Authors, published by EDP Sciences, 2020
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