A research on the Extraction of Metals from Küre Chalcopyrite Concentrate in the Pressure Reactor System

Year 2013, Volume: 17 Issue: 3, 447 - 455, 01.06.2013

Hasan Arslanoğlu Hamdi Soner Altundoğan

Abstract

In this study, ammonium persulfate leaching of metals from Küre chalcopyrite concentrate was investigated in the pressure reactor by using response surface methodology (RSM). Experiments were planned with all factorial array of central composite design (CCD) as total 86 experiments, so that 10 experiments in centre. The all of investigating parameters having affected on the results were defined as independent variable. The investigating parameters that effect on the metal extraction yield in the chalcopyrite leaching are concentration of ammonium persulfate (APS), leaching temperature, stirring speed and ratio of liquid-solid, reactor occupancy and leaching time. Leaching experiments were performed as batch in the 300 ml pressure reactor. The data obtained from different experimental conditions were optimized that optimizing criteria is maximum copper and minimum iron passing into leach solution, and model equation were formed for both response values. The obtained model equations for copper and iron extraction were determined as second order model. Under the optimum leaching conditions, some model solution points were determined. According to results of performed experiments in these solution points, copper extraction yield is 55% while iron is about 15%.

Keywords

Chalcopyrite, Pressure leaching, Ammonium persulfate, Metal extraction.

Yüksek Basınç Reaktör Sisteminde Küre Kalkopirit Konsantresinden Metallerin Ekstraksiyonu Üzerine Bir Araştırma

Abstract

In this study, ammonium persulfate leaching of metals from Küre chalcopyrite concentrate was investigated in the pressure reactor by using response surface methodology (RSM). Experiments were planned with all factorial array of central composite design (CCD) as total 86 experiments, so that 10 experiments in centre. The all of investigating parameters having affected on the results were defined as independent variable. The investigating parameters that effect on the metal extraction yield in the chalcopyrite leaching are concentration of ammonium persulfate (APS), leaching temperature, stirring speed and ratio of liquid-solid, reactor occupancy and leaching time. Leaching experiments were performed as batch in the 300 ml pressure reactor. The data obtained from different experimental conditions were optimized that optimizing criteria is maximum copper and minimum iron passing into leach solution, and model equation were formed for both response values. The obtained model equations for copper and iron extraction were determined as second order model. Under the optimum leaching conditions, some model solution points were determined. According to results of performed experiments in these solution points, copper extraction yield is 55% while iron is about 15%.

Keywords

Kalkopirit, Basınç liçi, Amonyum persülfat, Metal ekstraksiyon

References

• [1] Prasad, S., Pandey, B.D. (1998) ‘Alternative processes for treatment of chalcopyrite’, Minerals Engineering, Vol. 11, pp. 763-781.
• [2] Stott, M.B., Watling, H.R., Franzmann, P.D., Sutton, D. (2000) ‘The Role of iron-hydroxy precipitates in the passivation of chalcopyrite during bioleaching’, Minerals Engineering, Vol. 13, pp. 1117-1127.
• [3] Hiroyoshi, N., Hirota, M., Hirajima, T., Tsunekawa, M. (1997) ‘A case of ferrous sulfate addition enhancing chalcopyrite leaching’, Hydrometallurgy, Vol. 47, pp. 37- 45.
• [4] Hiroyoshi, N., Miki, H., Hirajima, T., Tsunekawa, M. (2001) ‘Enhancement of chalcopyrite leaching by ferrous ions in acidic ferric sulphate solutions’, Hydrometallurgy, Vol. 60, pp. 185-197.
• [5] Lu, Z.Y., Jeffrey, M.I., Lawson, F. (2000) ‘The effect of chloride ions on the dissolution of chalcopyrite in acidic solutions’, Hydrometallurgy, Vol. 56, pp. 189-202.
• [6] Dreisinger, D., Abed, N. (2002) ‘A fundamental study of the reductive leaching of chalcopyrite using metallic iron part: kinetic analysis’, Hydrometallurgy, Vol. 66, pp. 37- 57.
• [7] Han, K.N., Meng, X. (2003) ‘Recovery of copper from its sulphides and other sources using halogen reagents and oxidants, Minerals & Metallurgical Processing, Vol. 20, pp. 160- 164.
• [8] Koleini, J.S.M., Aghazadeh, V., Sandstrom, A. (2011) ‘Acidic sulphate leaching of chalcopyrite concentrates in presence of pyrite’, Minerals Engineering, Vol. 24, pp. 381-386.
• [9] Bjorling, G., Faldt, I., Lindgren, E., Toromanov, I. (1976) ‘A nitric acid route in combination with solvent extraction for hydrometallurgical treatment of chalcopyrite’, In Extractive Metallurgy of Copper, AIME, Vol. 2, pp. 725-737, New York.
• [10] Maurice, D., Hawk, J.A. (1998) Ferric chloride leaching of mechanically activated chalcopyrite, Hydrometallurgy, Vol. 49, pp. 103-123.
• [11] Tamagawa, T., Tabaian, S.H., Fu, N.X., Kobayashi, M., Iwasaki, I. (2000) ‘Extraction of copper from chalcopyrite concentrates without sulphuric acid generation via chlorination, Part 1: gaseous chlorination of sulphide concentrates’, Minerals and Metallurgical Processing, Vol. 17, pp. 259- 263.
• [12] Sarvesware, K., Rao, K., Ray, H.S. (1998) ‘A new look at characterisation and oxidative ammonia leaching behaviour of multimetal sulphides’, Minerals Engineering, Vol. 11, pp. 1011-1024.
• [13] Feng, D., Van Deverter, J.S.J. (2002) ‘Leaching behavior of sulphides in ammoniacal thiosulphate systems 2, Hydrometallurgy, Vol. 63, pp.189-200.
• [14] Havlik, T., Miskufova, A., Tatarka, P. (2001) ‘Modern methods of oxidative chalcopyrite leaching’, Acta Metallurgica Slovaca, Vol. 4, pp. 62-68.
• [15] Ting-Sheng, Q., Guang-Hua, N., Jun-Feng, W., Li-Feng, C. (2007) ‘Kinetic process of oxidative leaching of chalcopyrite under low oxygen pressure and low temperature’, Transaction of Nonferrous Metals Society of China, Vol. 17, pp. 418-422.
• [16] Mcdonald, R.G., Muir, D.M. (2007) ‘Pressure oxidation leaching of chalcopyrite. Part I. Comparison of high and low temperature reaction kinetics and products’, Hydrometallurgy, Vol. 86, pp. 191:205.
• [17] Padilla, R., Pavez, P., Ruiz, H. (2008) ‘Kinetics of copper dissolution from sulfidized chalcopyrite at high pressure in H2SO4-O2’, Hydrometallurgy, Vol. 91, pp. 113-120.
• [18] Akçıl, A. (2002) ‘A preliminary research on acid pressure leaching of pyritic copper ore in Küre copper mine Turkey’, Minerals Engineering, Vol. 15, pp. 1193-1197.
• [19] Touro, F.J. (1976) ‘Oxidation-leaching of chalcopyrite, United States Patent, 3 962 402.
• [20] Padilla, R., Vega, D., Ruiz, M. C. (2007) ‘Pressure leaching of sulfidized chalcopyrite in sulfuric acid-oxygen media’, Hydrometallurgy, Vol. 86, pp. 80-88.
• [21] Jackson, E. (1986) ‘Hydrometallurgicall extraction and reclamation’, Ellis Harwood Ltd., pp. 56-61 , Newyork,
• [22] Vogel, A.I. (1989) ‘Vogel’s textbook of quantitative chemical analysis’, 5th edition, ISBN:0-582-44693-7, London.
• [23] Montgomery, C. D. (2001) ‘Design and Analysis of Experiments’, 5th Edition, A.B.D.
• [24] Kul, S. (2004) ‘Cevap Yüzey Yöntemleri, Yüksek Lisans Tezi’, Mersin Üniversitesi Sağlık Bilimleri Enstitüsü Biyoistatistik Anabilim Dalı, Mersin.