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Article name USE OF PHOTOCHEMICAL AND ELECTROCHEMICAL PROCESSES WHEN LEACHING GOLD FROM THE SECONDARY MINERAL RAW MATERIAL
Authors Sekisov A.. ,
Rubtsov Y.. ,
Lavrov A.. candidate of engineering sciences, lavrov_2002@mail.ru
Trubachev A.. doctor of geol.-mineralogical sciences, professor, geoxxi@mail.ru
Rasskazova A.. candidate of technical sciences, senior researcher, annbot87@mail.ru
Bibliographic description
Category Earth science
DOI 622.7
DOI 10.21209/2227-9245-2019-25-7-70-83
Article type scientific
Annotation Flotation tailings and cyanidation residual of Darasun mineral processing plant, lead flotation tailings of Novoshirokinsk processing plant contain a significant amount of gold to be recovered. The tailings are valuable mineral raw material in case of application of the technologies providing economically acceptable level of extraction. The geotechnology of a percolation activated gold leaching has been tested in this research. A direct cyanide leaching provides only 14…29 % of extraction of gold from this secondary mineral raw material. Activated leaching sodium bicarbonate - cyanide solution significantly increases gold extraction (by 25…55 %) in comparison with standard cyanidation. This solution is prepared by electro-photo-chemical processing of an aqueous solution of the corresponding reagents in reactors. Activated solution is used both for agglomeration of flotation tailings and for irrigation of each column. Kinetic curve of gold leaching demonstrates that the main portion of gold is recovered at the diffusion oxidation stage and selective dissolution during the curing. The economic calculations which are carried out on the basis of the results received during the experiments and account parameters show that gold recovery from flotation tails and cyanidation residual is profitable actually without the accompanying copper extraction.
Key words Keywords: photochemical processes; electrochemical processes; leaching; dispersed gold; secondary mineral raw material; flotation tailings; cyanidation residual; activated solutions; standard cyanidation
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References References 1. Abramov A. A. Tehnologiya pererabotki i obogashcheniya rud tsvetnyh metallov (Technology of processing and concentration of non-ferrous metal ores). Moscow: Mining Book, 2017, vol. 3, Book. 1,540 p. 2. Aksyonov A. B., Vasiliev A. A. Innovatsionnye protsessy v tehnologiyah kompleksnoy pererabotki mineralnogo i netraditsionnogo syriya (Plaksinskie chteniya): materialy mezhdunarodnogo soveshchaniya (Innovative processes in the technologies for complex processing of mineral and non-traditional raw materials (Plaksinsky readings): proceedings of the international meeting). Novosibirsk, October 5–10, 2009, pp. 100–101. 3. Aksyonov A. B., Vasiliev A. A. Materialy nauchno-prakticheskoy konferentsii “Perspektivy razvitiya, ekologii i avtomatizatsii himicheskih, pishevyh i metallurgicheskih proizvodstv” (Materials of the scientific-practical conference “Prospects for the development, ecology and automation of chemical, food and metallurgical industries”). Irkutsk: Irkutsk State Technical University, 2009, pp. 9–11. 4. Ali A. A., Prokofiev V. Yu., Kryazhev S. G. Materialy III Rossiyskoy molodyozhnoy Shkoly s mezhdunarodnym uchastiem “Novoe v poznanii protsessov rudoobrazovaniya” (Materials of the III Russian Youth School with international participation “New in the knowledge of ore formation processes”). Moscow: Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry RAS, 2013, pp. 35–38. 5. Karapetyants M. Kh. Himicheskaya Termodinamika (Chemical Thermodynamics). Moscow: Librocom, 2013. 584 p. 6. Patent № 2350665, C22B 3/18, C22B 11/08. Sposob kyuvetno-kuchnogo vyshchelachivaniya metallov iz mineralnoy massy (Patent No. 2350665, C22B 3/18, C22B 11/08. The method of heap cuvette-heap leaching of metals from mineral mass) / Sekisov A. G., Reznik Yu. N., Zykov N. V., Shumilova L. V., Lavrov A. Yu., Manzyrev D. V., Klimov S. S ., Korolev V. S., Konareva T. G .; Applicant and patent holder Federal State Educational Establishment of Higher Professional Education “Transbaikal Mining College”. No. 2007118333/03, declared 05/16/2007; publ. 03/27/2009, bull. Number 9. 7. Tehnologicheskie issledovaniya i razrabotka tehnologii polucheniya splava Dore iz kontsentrata gravitatsionnogo obogashcheniya i hvostov svintsovoy flotatsii rudy mestorozhdeniya Novoshirokinskoe: otchyot o nauchno-issledovatelskoy rabote: 1-120815-NSH/180116-1 / Institut TOMS (Technological research and development of the technology for producing Dore alloy from gravity concentration concentrate and lead flotation tailings of ore from the Novoshirokinskoye deposit: research report: 1-120815-NSh / 180116-1 / TOMS Institute). Irkutsk, 2016. 137 p. 8. Alonso-González O., Nava-Alonso F., Jimenez-Velasco C., Uribe-Salas A. Mineral Engineering (Mineral Engineering), 2013, vol. 42, pp. 43–49. 9. Alonso-González O., Nava-Alonso F., Uribe-Salas A. Mineral Engineering (Mineral Engineering), 2009, vol. 22, pp. 324–329. 10. Bas A. D., Koc E., Yazici E. Y., Deveci H. Transactions of nonferrous metals society of China (Transactions of nonferrous metals society of China), 2015, vol. 25, no. 2, pp. 597–607. 11. Bobadilla-Fazzini R. A., Perez A. G., Gautier V., Jordan H., Parada P. Hydrometallurgy (Hydrometallurgy), 2017, vol. 168, pp. 26–31. 12. Breuer P. L., Dai X., Jeffrey M. I. Hydrometallurgy (Hydrometallurgy), 2005, vol. 78, no. 3–4, pp. 156–165. 13. Gonen N., Kabasakal O. S., Ozdil G. Journal of Hazardous Materials (Journal of Hazardous Materials), 2004, vol. 113, pp. 231–236. 14. Rasskazova A. V. Proceedings of IMPC 2018 – 29th International Mineral Processing Congress, 15–21 September, 2018 (Proceedings of IMPC 2018 – 29th International Mineral Processing Congress, 15–21 September, 2018), Moscow, Russia, Young Scientists Reports, Paper-981, pp. 4093–4098. 15. Smith S. R., Zhou Ch., Baron J. Y., Choi Y., Lipkowski J. Electrochimica acta (Electrochimica acta), 2016, vol. 210, pp. 925–934. 16. Xie F., Dreisinger D. Mineral Engineering (Mineral Engineering), 2009, vol. 27, pp. 190–195.
Full articleUSE OF PHOTOCHEMICAL AND ELECTROCHEMICAL PROCESSES WHEN LEACHING GOLD FROM THE SECONDARY MINERAL RAW MATERIAL