Journals →  Tsvetnye Metally →  2017 →  #9 →  Back

NOBLE METALS AND ALLOYS
ArticleName Pyrometallurgical opening of refractory carbonaceous and arsenic gold ledge ores with noble metal recovery to matte
DOI 10.17580/tsm.2017.09.08
ArticleAuthor Kvyatkovskiy S. A., Kozhakhmetov S. M., Ospanov Ye. A., Semenova A. S.
ArticleAuthorData

Institute of Metallurgy and Ore Beneficiation, Almaty, Republic of Kazakhstan:

S. A. Kvyatkovskiy, Head of Laboratory, e-mail: kvyatkovskiy55@mail.ru
S. M. Kozhakhmetov, Chief Researcher
A. S. Semеnova, Leading Engineer

 

KazakhMys Corporation LLP, Almaty, Republic of Kazakhstan:

Ye. A. Ospanov, Technical Director

Abstract

Carbonaceous and arsenic, highly refractory gold ledge ores are the minerals with complex composition and structure. High recovery of noble metals from them is an unsolved problem of the gold mining industry of the world. Our paper detaily reviews the phase compositions, structure and thermal properties of the source gold refractory ores using physical methods that allowed determining conditions of experimental melting. It also provides the results of laboratory tests on direct melting of refractory gold ledge ores using selective pyrometallurgical reduction (SPR) process for gold and other metals recovery to the matte melts. The main experimental crucible melting was carried out using two types of refractory ores of Bakyrchik (East Kazakhstan) deposit having low grade gold content (5,5 g/t Au, 0.8 g/t Ag, 1.0% As), and high grade gold content (12.0 g/t Au, 1.1 g/t Ag and 2.05% As). Pyrite concentrate with high grade gold containing 17.5 g/t Au and 68.7 g/t Ag and copper sulfide concentrate containing 2.0 g/t Au and 103.5 g/t Ag were used as matte-forming flux. A big size crucible melting showed the optional use of the SPR process for processing of highly refractory gold ledge ores of the Bakyrchik deposit, with production of slags containing 0.2–0.57 g/t Au, 0.5–2.6 g/t Ag and 0.01–0.83% Cu and mattes containing up to 70.41 g/t Au and up to 151.55 g/t Ag. Meanwhile, metal recovery to collector matte is at the level of 96-98% for gold and 65–98% for silver. Given the existing gold recovery to matte copper smelting plants operating by the standard process flow, the end-to-end noble metal recovery will be 93–94%.
This article is published within the project implementation of the grant financing of scientific investigations No. 855/ГФ4.

keywords Refractory ore, gold, sulfide flux, pyrite concentrate, calcium flux, pyrometallurgical selection, distribution, recovery, matte, slag, gold
References

1. Zakharov V. A., Meretukov M. A. Gold: refractory ores. Moscow : “Ore and Metals” Publishing House, 2013. 456 p.
2. Hol A., van der Weijden R. D., Van Weert G., Kondos P., Buisman C. J. N. Bio-reduction of elemental sulfur to increase the gold recovery from enargite. Hydrometallurgy. 2012. Vol. 115–116. pp. 93–97.
3. Turysbekova G. S., Meretukov M. A., Bektay E. K. Gold: innovations in chemistry and metallurgy. Almaty : KazNTU, 2015. 632 p.
4. Adams M. Advances in Gold Ore Processing. Amsterdam : Elsevier, 2005. Vol. 15. 1076 p.
5. Super porphyry copper and gold deposits: a global perspective. Vol. 1. Linden Park, Australia : PGS Publishing, 2005. 256 p.
6. Meretukov M. A. Gold and natural carbonaceous substance. Moscow : “Ore and Metals” Publishing House, 2007. 109 p.
7. Meretukov M. A. Active coals and cyanide process. Moscow : “Ore and Metals” Publishing House, 2007. 284 p.
8. Frank-Kamenetskiy D. A. Pyrometallurgy in gold mining. Roasting and smelting of gold-bearing ores. Moscow, Irkutsk : OGIZ, 1933. 80 p.
9. Russian gold. Ed.: V. V. Rudakov. Moscow : Ekos, 2002. 722 p.
10. Migachev I. F., Karpenko I. A., Petrash N. G. Geological-economic revaluation of the Sukhoy Log deposit taking into account innovation technologies. Materials of International symposium “Gigantic deposits of gold in the Central Asia. Strengthening of gold ore potential of Kazakhstan”. Almaty, 13–14 March 2014. pp. 23–35.
11. Kushnarev P. I. New data about Natalkinskoe gold ore deposit. Materials of International symposium “Gigantic deposits of gold in the Central Asia. Strengthening of gold ore potential of Kazakhstan”. Almaty, 13–14 March 2014. pp. 36–40.
12. Isakhodzhaev B. A., Nurtaev B. S., Khamroev I. O. Supergigantic deposit Muruntau and its position in regional structures. Materials of International symposium “Gigantic deposits of gold in the Central Asia. Strengthening of gold ore potential of Kazakhstan”. Almaty, 13–14 March 2014. pp. 41–48.
13. Dzhenchuraeva R. D., Nikonorov V. V. Gigantic deposit Kumtor and its rational mastering problems. Materials of International symposium “Gigantic deposits of gold in the Central Asia. Strengthening of gold ore potential of Kazakhstan”. Almaty, 13–14 March 2014. pp. 49–55.
14. Antonov Yu. A. Bakyrchik deposit and prospects of increasing of its reserves. Materials of International symposium “Gigantic deposits of gold in the Central Asia. Strengthening of gold ore potential of Kazakhstan”. Almaty, 13–14 March 2014. pp. 56–60.
15. Fridovskiy V. Yu., Gamyanin G. N., Polufuntikova L. I. Metallogeny of gold and silver in South Verkhoyanie. Gornyi Zhurnal. 2017. No. 6. рр. 9–15. DOI: 10.17580/gzh.2017.06.02
16. Narseev V. A., Gostev Yu. V., Zakharov A. V., Kozlyannikov D. M., Matvienko V. N., Favorov V. A., Frankovskaya N. M., Shiganov A. A. Bakyrchik (geology, geochemistry, mineralization). Moscow : TsNIGRI, 2001. 174 p.
17. Kovalev V. N., Golikov V. V., Rylov N. V. The Bakyrchikskoye deposit rebellious carbon-bearing gold sulfide ore processing technology analysis and selection. Obogashchenie Rud. 2017. No. 2. pp. 21–25. DOI: 10.17580/or.2017.02.04
18. Marchenko L. G. Micro-nanomineralogy of gold and platinoids in black shales. Almaty : Interpress, 2010. 146 p.
19. Baybatsha A. B., Dyusembaeva K. Sh., Sazhin Yu. G., Abdykirova G. Zh. Micro- and nanogold and technology of its extraction. Almaty : KazNTU, 2009. 160 p.
20. Moiseenko N. V., Safronov P. P., Voropaeva E. N. Minerals-concentrators of microscopic and nanosize gold of Pokrovskoe deposit. Nanogeochemistry of gold : symposium proceedings. Vladivostok : Dalnauka, 2008. pp. 113–118.
21. Kozhakhmetov S. M. New efficient processes in pyrometallurgy of copper, nickel and gold : selected proceedings. Vol. 2. Almaty : Fylym ordasy, 2015. 408 p.
22. Kozhakhmetov S. M., Bekturganov N. S., Kvyatkovskiy S. A. Method of processing of gold-arsenic raw materials. Patent 25568 RK. Published: 15.03.2012. Bulletin No. 3.
23. Filippou D., St-Germain P., Grammatikopoulos T. Recovery of metal values from copper-arsenic minerals and other related resources. Mineral Processing and Extractive Metallurgy Review. 2007. Vol. 28. pp. 247–298.
24. Semenova A. S., Kozhakhmetov S. M., Kvyatkovskiy S. A., Kim L. P., Sejsembaev R. S. Technological parameters of direct smelting of goldcontaining refractory ledge of Bakyrchik deposit. Complex Use of Mineral Resources. 2016. No. 4. pp. 35–38.
25. Ginzburg S. I., Gladyshevskaya K. A., Ezerskaya I. A., Ivonina O. M., Prokofeva I. V., Fedorenko N. V., Fedorova A. H. Guidance for chemical analysis of platinum metals and gold. Moscow : Nauka, 1965. 314 p.

Language of full-text russian
Full content Buy
Back