Oxygenated Leaching of Copper Sulfide Mineral under Microwave-Hydrothermal Conditions


A study on microwave assisted chalcocite leaching was carried out with a microwave hydrothermal reactor. The leaching was conducted with thick mineral slurries (50-100g/l). The leaching media is a mixed solution of CuCl2 and NaCl. The investigation included the effect of leaching temperature, quantities of the minerals per unit slurry volume as well as the initial concentration of cupric ions. The results were discussed and compared with using conventional leaching method.

Share and Cite:

J. Hwang, S. Shi, Z. Xu and X. Huang, "Oxygenated Leaching of Copper Sulfide Mineral under Microwave-Hydrothermal Conditions," Journal of Minerals and Materials Characterization and Engineering, Vol. 1 No. 2, 2002, pp. 111-119. doi: 10.4236/jmmce.2002.12008.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] M. Valayapetre and A.E. Torma; “Electrochemical recovery of copper from covellite”; Metal, 32 [11] 1120-1123 (1978).
[2] D.J.Mckay; “ The direct electrorefining of copper matte”, JOM, 44-48 (1993)
[3] A.K. Bose, B.K. Banik, N. Lavlinskaia, M. Jayaraman and M.S. Manhas; “MORE chemistry in a microwave”; Chmtech, 18-23, 1997.
[4] S.S. Park; “Synthesis of alumina sulfate from kaolin by microwave extraction”; J. Am. Ceram. Soc., 83 [6] 1341-45 (2000).
[5] Anon; “Microwave dissolution”; Analytical Chemistry; 58 (14) 1424a 1426a (1986)
[6] K.E. Haque; “Microwave energy for mineral treatment processes – a brief review”; Int. J. Miner. Process, 57 1-24 (1999).
[7] U. Oberhagemann, M. Jeschke and H. Papp; “Synthesis of highly ordered boron-containing BMCM-41 and pure silica MCM-41”; Microporous and Mesoporous Materials; 33 165-172 (1999)
[8] W. Ding; “Leaching behavior of complex copper sulfide concentration with ferric chloride by microwave irradiation”; Rare Metals, 16 [2] 152-155 (1997).
[9] R. Padilla, D. Lovera and M.C. Ruiz; “Leaching of chalcopyrite in CuCl2-NaCl-O2 system”; EPD Congress 1997, 167-177 (1997).
[10] M.C. Ruiz, S. Honores and P. Padilla; “Leaching of a chalcocite concentrate with cupric chloride-oxygen”; EPD Congress 1997, 139-147 (1997).
[11] M.C. Ruiz, S. Honores and R. Padilla; “Leaching of Digenite concentrate in oxygenated chloride media at ambient pressure”; Metallurgical and Materials Transactions B, 29B 961-969 (1998).
[12] R.Z. Vracar, I.S. Parezanovic and K.P. Cerovic; “Leaching of Copper(I) sulfide in calcium chloride solution”; Hydrometallurgy, 58 261-267 (2000).
[13] F. Chemat, D. C. Esveld, M. Poux and J. L. Dimartino; “Role of selective heating in the microwave activation of heterogeneous catalysis reactions using a continuous microwave reactor”: J. Microwave Power and Electromagnetic Energy; 33 (2) 88-94 (1998).
[14] I.S. Hudiara, “Microwave complex permitivity of water at high temperatures”, IETE Technical Review, 15 [3] 221-223 (1998).
[15] S. Ryynanen, P.O. Risman and T. Ohlsson, “The dielectric properties of native starch solutions – a research note”, Journal of Microwave power and Electromagnetic Energy, 31 [1] 50-53 (1996).
[16] A.S. Jhaveri and M.M. Sharma; “Kinetics of absorption of oxygen in aqueous solutions of cuprous chloride”; Chem. Eng. Sci., 22 1-6 (1967).
[17] T. Tran and D.A.J. Swinkels; “The kinetics of oxidation of Cu (I) chloride by oxygen in NaCl-HCl solutions”; Hydrometallurgy, 15 281-295 (1986).
[18] R. Winand; “Chloride hydrometallurgy”; Hydrometallurgy, 27 285-316 (1991).

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.