Please enter verification code
Investigation of Affecting Parameters on Heap Leaching Performance and Reducing Acid Consumption of Low Grade Oxide-Sulfide Copper Ore
International Journal of Mineral Processing and Extractive Metallurgy
Volume 2, Issue 4, July 2017, Pages: 40-45
Received: May 26, 2017; Accepted: Jul. 26, 2017; Published: Aug. 24, 2017
Views 2858      Downloads 187
Mohsen Azmayandeh, School of Mining, College of Engineering, Sahand University of Technology, Tabriz, Iran
Valeh Aghazadeh, School of Mining, College of Engineering, Sahand University of Technology, Tabriz, Iran
Hadi Abdollahi, School of Mining, College of Engineering, University of Tehran, Tehran, Iran
Article Tools
Follow on us
Heap leaching method is known as cheap method for copper extraction. Presence of clay and acid consumer waste minerals are the most critical issues because they may bring out the process from economic mode. For reduce acid consumption and increasing copper extraction in heap leaching method, about 3 tons sample was taken randomly from different low grade zones. After homogenization and spelling into small parts, bottle roll tests were carried out to achieve maximum copper recovery and acid consumption in a short time at pH= 1, 1.1 and 1.2. Maximum copper recovery were 60.8, 60.2 and 60.1%, respectively. Also acid consumption were 107.30, 99.90 and 93.23 kg/t of ore, respectively. After diagnostic tests, nine columns with dimension 2m height and 15cm diameter were filled by 0.5, 1 and 1.5 inches ore. Columns were irrigated with 7, 9 and 11 g/l as acid solution concentration at flow rates of 7, 11 and 15 l/m2*h for 63 days. Results showed that there are high correlation between copper and iron recoveries. Copper recovery changed from 25.5% to 58.9% while iron recovery changed from 4.7% to 15.2%. Acid consumption were achieved between 18 to 54 kg per ton of ore. Acid solution concentration and irrigation flow rate are the most important parameters on the copper and iron recoveries. By increasing of leaching period Copper extraction will increase, but acid will be waste more. Copper and iron recoveries were increased with increasing the acid solution concentration and irrigation flow rate but Increasing in amount of acid consumption does not increase copper extraction inevitably. Irrigation flow rate of acid solution has significant effect on acid consumption. With decreasing the ore particle size, both of copper recovery and acid consumption were increased.
Copper Oxide Heap Leaching, Bottle Rolling Test, Column Tests, Copper and Iron Recoveries, Acid Sulfuric Consumption
To cite this article
Mohsen Azmayandeh, Valeh Aghazadeh, Hadi Abdollahi, Investigation of Affecting Parameters on Heap Leaching Performance and Reducing Acid Consumption of Low Grade Oxide-Sulfide Copper Ore, International Journal of Mineral Processing and Extractive Metallurgy. Vol. 2, No. 4, 2017, pp. 40-45. doi: 10.11648/j.ijmpem.20170204.11
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Ghaderian, SM., Ghotbi Ravandi, A., 2012. Accumulation of copper and other heavy metals by plants growing on Sarcheshmeh copper mining area, Iran. Journal of Geochemical Exploration, 123. Pages 25-32
Massinaie, M., Oliazadeh, M., Seyed Bagheri, A., 2006. Biological copper extraction from melting furnaces dust of Sarcheshmeh copper mine. J. Mineral Processing. 81, 1, 58-62
Norgate, T., Jahanshahi, S. 2010. Low grade ores – Smelt, leach or concentrate? J. Minerals Engineering. 23, 2. 65-73
Hiskey, J. B., 1983 “Heap leaching practice at Alligator Ridge,” Chapter 1, Current status of U. S. Gold and Silver Heap Leaching Operations, Heap and Dump Leaching practice, Proceedings from the 1983 SME Fall Meeting, October 19-21, 1983, Salt Lake City, pp. 1-7
Breitenbach, A. J., Smith M, E. 2007. Geomembrane Raincoat Liners in the Mining Heap Leach Industry, J. Geosynthetics. 25, 2. 32-39
Peacy, J., Xian-Jian, G., Robles, E. 2004. Copper hydrometallurgy: current status, preliminary economics, future direction and positioning versus smelting, Trans. J. Nonferrous Met. Soc. China, 14, 3. 560-568
Aixiang, W., Shenghu, Y., Wenqing, Q., Jishan, L., Guanzhou, Q. 2009. The effect of preferential flow on extraction and surface morphology of copper sulphides during heap leaching, J. Hydrometallurgy. 95, 1-2. 76-81
Ghorbani, Y., Franzidise, J. P., Peterson. J. 2016. Heap Leaching Technology-Current State, Innovations, and Future Directions: A Review. J. Mineral Processing and Extractive Metallurgy Review. 37, 2. 73-119
Nikhil Dhawan, M., Safarzadeh, S., Miller, J. D., Michael, S., Moats, Raj K. Rajamani. 20013. Crushed ore agglomeration and its control for heap leach operations. J. Minerals Engineering, 41. 53-70
Phanindra, K., Tolga D., Nikhil D., Xuming W., Lina C. L., Millera Ja, n D. 2011. Evaluation of stucco binder for agglomeration in the heap leaching of copper ore. J. Minerals Engineering, 24, 8. 886-893
Lwambiyi, M., Maweja, K., Kongolo, K., Lwambiyi, N. M., Diyambi, M. 2009. Investigation into the heap leaching of copper ore from the Disele deposit. J. Hydrometallurgy. 98, 1-2. 177-180.
Ghorbani, Y., Becker, M., Mainza, A., Franzidis, J P. 2011. Large particle effect in chemical/biochemical heap leach processes-A review. J. Minerals Engineering. 24, 11. 1172-1184
Khodadadi Darban, A., Koleyni, S MJ., Sheikhzadeh, Gh., Hasani, M. 2009. Mathematical Modelling and Development Software for leaching of Copper Oxide Minerals. J. Mining engineering. 4. 23-34
Savov, G., Angelov, T., Tsekov, V., Grigorova, I., Nishkov I. 2011. Heap and Dump Leach Process at the Buchim Cooper Project – Metallurgical Testwork. XXII World Mining Congress, Vol. II, Istanbul, Turkey. 271-276
Andrade Lima, L. R. P. 2006. Liquid axial dispersion and holdup in column leaching, J. Minerals Engineering. 19, 1. 37-47
Dulliea. F. A. L. D. 1992. Porous Media: Fluid Transport and Pore Structure, B. Academic Press Inc. NewYork 1992
Dreisinger, D. 2006. Copper leaching from primary sulfides: Options for biological and chemical extraction of copper. J. Hydrometallurgy. 83, 1-4. 10-20
Schlitt, W. J. 1999. Hydrometallurgical treatment of Haib copper ore. J. south African institute of mining and metallurgy, 99, 2. 75-92
Ferron, CJ. Riveros, P. A., Dixon, D. G. 2003. Leaching of secondary copper minerals using regenerated ferric sulfate Copper, VI: Hydrometallurgy of Copper, J. SGS MINERALS SERVICES, Technical Paper. 337-352
Sherlock, E. J., Lawrence, R. W., Poulin, R. 1995. On the neutralization of acid rock drainage by carbonate and silicate minerals. J. Environmental Geology, 25, 1. 43-54
Dopson, M., Halinen, AK, Rahunen, N., Boström, D., Sundkvist, JE. Riekkola-Vanhanen, M., Kaksonen, AH., Puhakka, JA. 2008. Silicate mineral dissolution during heap bioleaching. J. Biotechnol Bioeng. 99, 4. 811-820
Science Publishing Group
1 Rockefeller Plaza,
10th and 11th Floors,
New York, NY 10020
Tel: (001)347-983-5186