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Study of leachability of Zhezkazgan deposit copper ores

https://doi.org/10.17073/2500-0632-2018-2-14-20

Abstract

In the conditions of Zhezkazgan copper deposit, exploited by underground method, ore losses in pillars left ranges from 12 to 25%, sometimes reaching 40%. During the period of Zhezkazgan deposit development, tens million tonnes of rich ores remained as the losses. Annual growing ore losses in various pillars, taking into account the growing overall ore production, is approximately equal to the annual productivity of the whole mine. Besides, high-grade copper ore sublayers has not yet involved in mining. Therefore, the search for the most effective methods of mining lost, off-balance, and waste ores is of paramount importance. One of such methods is in-situ leaching, which allows secondary extracting and maximum use of the mineral wealth. The research purpose was to experimentally study the processes of leaching of oxidized, mixed, and sulfide copper ores for old mined-out mines of Zhezkazgan deposit using various solvents. Leaching of oxidized and sulfide ores was carried out in 2 stages, while duration of the short-term tests was 35 days, and that of long-term ones, 294 days. For 10 months, 50–80% of copper can be leached from the oxidized-sulfide ores with particle size of below 20 mm. For the same period, 30–50% of copper was leached from chalcocite ore, whereas only 5–12% were extracted from bornite-chalcopyrite ore. This indicates low efficiency of leaching processing of the bornite-chalcopyrite ore. The best solvents in this case are sulfuric acid (5–10 g/l) and acidified iron (III) sulfate Fe2(SO4)3 (5 g/l). Sulfuric acid consumption in the process of leaching and development of oxidizing processes decreases to 1.6–3.2 t/t of copper for the oxidized ore and to 2.5–4.1 t/t for the chalcocite ore that makes sulfuric acid leaching quite acceptable for these ores in terms of performance indicators.

About the Authors

N. Zhalgasuly
Kunaev Mining Institute
Kazakhstan

191, Abay Ave., Almaty, Kazakhstan, A05A1K0



A. V. Kogut
Kunaev Mining Institute
Kazakhstan

191, Abay Ave., Almaty, Kazakhstan, A05A1K0



A. A. Ismailova
Kunaev Mining Institute
Kazakhstan

191, Abay Ave., Almaty, Kazakhstan, A05A1K0



References

1. Bartlett Robert W. Metal extraction from ores by heap leaching. Metallurgical and Materials Transactions B, vol. 28, issue 4, 1997, pp. 529-548.

2. Petersen Jochen. Heap leaching as a key technology for recovery of values from low-grade ores – A brief overview. Hydrometallurgy, volume 165, part 1, 2016, pp. 206-212.

3. Shayestehfar M.R., Karimi S., Mohammadalizadeh Nasab H. Mineralogy, petrology, and chemistry studies to evaluate oxide copper ores for heap leaching in Sarcheshmeh copper mine. Kerman, Iran. Journal of Hazardous Materials, vol. 154, issues 1–3, 2008, pp. 602-612.

4. Hoseinian Fatemeh Sadat, Bahadori Moein, Hashemzadeh Mohsen, Rezai Bahram, Soltani-Mohammadi Saeed. Application of Mathematical Modeling on Copper Recovery Optimization of Oxide Ores. JOM, vol. 69, issue 10, 2017, pp. 1939–1944.

5. Noei Saman Beikzadeh, Sheibani Saeed, Rashchi Fereshteh, and Mirazimi Seyed Mohammad Javad. Kinetic modeling of copper bioleaching from lowgrade ore from the Shahrbabak Copper Complex. International Journal of Minerals, Metallurgy and Materials, vol. 24, issue 6, 2017, pp. 611-623.

6. Rakishev B. Prirodnyj i nauchno-tehniche-skij potencial proizvodstva redkih, redkozemelnyh metallov [Natural and scientific and technical potential of rare, rare earth metals production]. Promyshlennost Kazahstana, 2016, 1(94), pp. 40-43.

7. Satpaeva T.A. Mineralogicheskij sostav rud Dzhezkazganskogo mestorozhdeniya [Mineralogical composition of the Dzhezkazgan deposit]. In the book "Bolshoj Dzhezkazgan", T. 1, Alma-Ata, 1961, pp. 29-41.

8. Kalabin A.I. Dobycha poleznyh iskopaemyh podzemnym vyshelachivaniem [Extraction of minerals by underground leaching]. Moscow, Atomizdat, 1969, 375 p.

9. Novik-Kachan V.P., et al. Dobycha metallov sposobom vyshelachivaniya [Extraction of metals by leaching]. Moscow, Cvetmetinformaciya, 1970.

10. Lunev L.I., Rudakov I.E. Podzemnye sistemy vyshelachivaniya metallov [Underground systems of metal leaching]. Moscow, Atomizdat, 1979, 90 p.

11. Solomin G.A., Fesenko N.G. Opredelenie FeII, FeIII v kislotnyh vodah [Determination of FeII, FeIII in acid waters]. Moscow, PH of the USSR Academy of Sciences, 1962.

12. Lyalikov N.N., Sokolova G.A. Mikrobio-logicheskaya harakteristika nekotoryh rudnyh mestorozhdenij Centralnogo Kazahstana [Microbiological characteristics of some ore deposits in Central Kazakhstan]. Mikrobiologiya, 1965, T. 34, Iss. 2, pp. 335-343.

13. Zhalgasuly N., Kairbekov Zh.K., Bitimbaev M.Zh., et al. Problemy i puti racio- - tehnicheskoe obespechenie gornogo proizvodstva [Problems and ways of rational use of mineral raw materials. In: Scientific and technical support of mining]. In Scientific and technical support of mining, T. 64, Almaty, 2002, pp. 177-181.

14. Zhalgasuly N., Kairbekov Zh.K., Chernij G.M., et al. Kompleksnoe ispolzovanie othodov razlichnyh otraslej promyshlennosti Kazahstana [Complex use of waste products of various industries of Kazakhstan]. Special Issue of NC COPUOS RK "Puti minimizacii i predotvrasheniya" ["Ways of minimization and prevention"]. Al-mats, 2002, pp. 44-46.

15. Pomashev O.P., Zhalgasuly N. et al. Certificate of authorship No. 1581761 of May 24, 1988. Sposob kuchnogo vyshelachivaniya medi iz rud [Method of heap leaching of copper from ores].

16. Altaev Sh.A., Zhalgasuly N., et al. K voprosu vyshelachivaniya metalla iz rudnyh celikov. Trudy shkoly-seminara GIGHS [To the question of leaching metal from ore ends. Proceedings of the School-Seminar of the GIGHS]. Moscow, 1985.

17. Altaev Sh.A., Toktamysov M.T., Zhalga-suly N. Geotehnologicheskie metody razrabotki rudnyh mestorozhdenij: Monografiya [Geotechnological methods for development of ore deposits: Monograph]. Almaty, Rauan, 1997, 287 p.

18. Zhalgasuly N., Chernij G.M., Tumakov V.A. Fiziko-himicheskie sposoby intensi- fikacii vyshelachivaniya cvetnyh metallov [Physicochemical methods of intensification of leaching of non-ferrous metals]. Mining information and analytical bulletin, 2004, no. 2.


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For citations:


Zhalgasuly N., Kogut A.V., Ismailova A.A. Study of leachability of Zhezkazgan deposit copper ores. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2018;(2):14-22. (In Russ.) https://doi.org/10.17073/2500-0632-2018-2-14-20

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