Журналы →  Tsvetnye Metally →  2015 →  №10 →  Назад

NOBLE METALS AND ALLOYS
Название Use of halogen containing noble metal solvents in pressure oxidation technology
DOI 10.17580/tsm.2015.10.10
Автор Zolotarev F. D., Aleksandrova T. N., Bogorodskiy A. V., Zhadovskiy I. T.
Информация об авторе

National Mineral Resources University, Saint Petersburg, Russia:

F. D. Zolotarev, Post-Graduate Student (Mineral Concentration Chair), e-mail: fzolot@mail.ru
T. N. Aleksandrova, Head of Mineral Concentration Chair
I. T. Zhadovskiy, Assistant (Chair of General and Physical Chemistry

JSC “Irgiredmet”, Irkutsk, Russia:
A. V. Bogorodskiy, Senior Researcher

Реферат

Gold recovery from technological refractory raw materials can be considered as one of the most urgent problems of modern gold mining industry. A pressure oxidation technology (which exploitation is rather expensive) is used for the processing of refractory sulfide gold-bearing ores. Intensification and increasing of this method efficiency are the urgent tasks for the researchers from the whole world. Using the halide-ion containing noble metal solvents in pressure oxidation process is one of prospective ways of hydrometallurgical processing of refractory sulfide gold-bearing raw materials. Researches were carried out using sulfide flotation concentrate of one of Amur Oblast deposits. Basically, sulfide minerals of researched flotation concentrate are shown by pyrite and arsenopyrite. Gold content is 38.6 g/t, while silver content is 61.2 g/t. NaCl was used in one of two experiment sets as a halide source, while oxidated material was cyanated. Leaching time of pressure leaching cake with addition of halide-ion was reduced from 25 to 2 hours. Reagent consumption was also reduced by almost 2 times. These factors make a significant influence on capital and exploitation costs during the processing of refractory gold-bearing materials with similar chemical and mineral composition. Experimental data were processed by mathematical statistics methods. Regression analysis was carried out with obtaining of equations of cyanation kinetics of pressure oxidation cakes, which can be used for further forecasting of leaching process.
This work was carried out within the State Task No.5.1284.2014/К.

Ключевые слова Key words: refractory ores, gold, sulfides, flotation concentrate, pressure oxidation, halides, cyanation, recovery, intensification
Библиографический список

1. Lodeyshchikov V. V. Tekhnologiya izvlecheniya zolota i serebra iz upornykh rud: v 2 tomakh (Technology of gold and silver rcovery from refractory ores : in two volumes). Irkutsk : Irgiredmet, 1999.
2. Petrov G. V., Boduen A. J., Mardari I. I., Ivanov B. S., Boginskaya A. S. Recourses of precious metals in technogenic objects of mining and metallurgical complex of Russia. International journal of experimental education. 2013. No. 2. pp. 53–54.
3. Goodbody A. Recovering refractory resources. Mining Magazine. August, 2012. Available at: http://www.miningmagazine.com/management/generalmanagement/recovering-refractory-resources.
4. Dunne R. Challenges and opportunities in the treatment of refractory gold ores. Key note address ALTA 2012 Gold Conference. Perth : ALTA Metallurgical Services, 2012.
5. Nikolaev Yu. L., Rybkin S. G. Plavka zolotosoderzhashchikh kontsentratov (Melting of gold-bearing concentrates). Zolotodobycha = Gold mining. 2011. No. 146.
6. Chubarov A. V., Belousova N. V., Drozdov S. V., Maksimenko V. V. Predvaritelnoe okislenie biokeka v tekhnologii pererabotki sulfidnykh zolotosoderzhashchikh rud i kontsentratov (Biocake pre-oxidation in the technology of processing of sulfide gold-bearing ores and concentrates). Tsvetnye Metally = Non-ferrous metals. 2010. No. 1. pp. 20–23.
7. Shneerson Ya. M., Chugaev L. V., Lapin A. Yu., Klementev M. V., Pleshkov M. A. Avtoklavnye tekhnologii prikhodyat v zolotoizvlekatelnuyu promyshlennost Rossii (Pressure technologies appear in Russian gold recovery industry). Zoloto i tekhnologii = Gold and technologies. 2012. No. 2 (16). pp. 82–86.
8. Gudkov S. S., Yemelianov Yu. Ye., Shketova L. Ye., Kopylova N. V., Galukov Ye. V. Heap Bioleaching of Gold-bearing Refractory Ores. Proceedings of the XXVI International Mineral Processing Congress “IMPC 2012”. New Delhi (India), 24–28 September 2012. Vol. 2.
9. Miller P., Brown A. Bacterial oxidation of refractory concentrates. Developments in Mineral Processing. 2005. pp. 403–433.
10. Fleming C. A., Dreisinger D. B., O'Kane P. T. Oxidative pressure leach recovery using halide ions. Patent US, No. 6315812. Publishe : November 13, 2001.
11. Ferron C. J., Fleming C. A., O’Kane P. T., Dreisinger D. Pilot plant demonstration of the PLATSOL™ process for the treatment of the NorthMet copper-nickel-PGM deposit. Mining Engineering. 2002. Vol. 54, No. 12. pp. 33–39.
12. Bogorodskiy A. V., Emelyanov Yu. E., Balikov S. V. Sposob pererabotki syrya, soderzhashchego blagorodnye metally i sulfidy (Method of processing of raw materials, containing noble metals and sulfides). Patent 017438 EPO, ICI C 22 B 11/00. Applier: JSC “Institute “Irgiredmet”. No. 200901228. Applied : September 02, 2009. Published : April 29, 2011.
13. Boldyrev A., Balikov S., Gudkov S., Bogorodsky A. Pressure oxidation of refractory gold-bearing concentrates using halide-based lixiviants and adsorbent. Proceedings of the XXVII International Mineral Processing Congress “IMPC 2014”. Santiago (Chile), 19–23 October 2014. pp. 83–88.
14. Bogorodskiy A. V., Zolotarev F. D. Sposob pererabotki syrya, soderzhashchego blagorodnye metally i sulfidy (Method of processing of raw materials, containing noble metals and sulfides). Patent RF, No. 2547056, IPC S 22 B 11/00. Applier and patent-holder: JSC “Institute “Irgiredmet”. Applied : September 26, 2013. Published : October 04, 2015. Bulletin No. 10.

Language of full-text русский
Полный текст статьи Получить
Назад