E. S. Allen and P. R. Krnesi, Cymet electrometallurgical process for base metal sulfide concentrate, Joint Meeting NMIJ-AIME, 1972.

E. S. Allen and P. R. Krnesi, Cymet Process -hydrometallurgical conversion of base metal sulfides to pure me tais, Can. Min. Metall. Bull, vol.66, p.734, 1973.

A. Andriamanana and M. Et-lamache, Etude electrochimique de la pyrite en milieu acide, Electrochimica Acta, vol.28, issue.2, pp.177-183, 1983.
DOI : 10.1016/0013-4686(83)85106-8

G. A. Baker, J. Gammel, and L. , The padé Approximant in theoretical physics, 1970.

J. Y. Barean and F. Coeuret, The anodic dissolution of copper in a fluidized bed electrode, Journal of Applied Electrochemistry, vol.22, issue.790, pp.737-743, 1979.
DOI : 10.1007/BF00614968

L. W. Beckstead, P. B. Munoz, J. L. Sepulveda, J. A. Herbst, J. D. Miller et al., Acid ferric sulfate leaching of attritor-ground chalcopyrite concentrates, Paper presented at the International Symposium on Copper Extraction & Refining, pp.611-632, 1976.

R. Bertram, N. Hillrichs, N. Galitis, R. Müller, and H. Greulich, Electrochemicalleaching of copper sulphide ores, Dev. Miner. Process, issue.2, pp.810-824, 1981.

R. Bertram, E. Hillrichs, and R. Müller, Anodic dissolution of copper sulphide ores in molten ZnCI2 -KCl, Technical note published in Trans. Instn. Min. Metall. ( sect. C: Mineral Process. Extr. Metall, pp.92-169, 1983.

T. Biegler, Reduction kinetics of a chalcopyrite electrode surface, Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, vol.85, issue.1, pp.101-106, 1977.
DOI : 10.1016/S0022-0728(77)80155-1

T. Biegler and D. C. Constable, Upgrading and activation of chalcopyrite concentrates by sllJITY electrolysis, Trans. Inst. Mining Metall, vol.85, pp.23-29, 1976.

T. Biegler and D. C. Constable, Continuous electrolytic reduction of a chalcopyrite slurry, Journal of Applied Electrochemistry, vol.81, issue.2, pp.175-179, 1977.
DOI : 10.1007/BF00616145

T. Biegler and M. D. Horne, Electrochemistry in mineral and metal processing, 1984.

T. Bigler and D. A. Swift, Dissolution kinetics of copper sulphide anodes, Hydrometallurgy, vol.2, issue.4, pp.335-349, 1977.
DOI : 10.1016/0304-386X(77)90041-X

T. Biegler and D. A. Swift, Anodic behaviour of pyrite in acid solutions, Electrochimica Acta, vol.24, issue.4, pp.415-420, 1979.
DOI : 10.1016/0013-4686(79)87029-2

M. C. Brage, M. Lamache, and D. Et-bauer, Contribution a l'etude des sulfures de cuivre non stoechiometriques, Electrochimica Acta, vol.24, issue.1, pp.25-30, 1979.
DOI : 10.1016/0013-4686(79)80035-3

P. Brennet, S. Jafferalli, J. Vanseveren, J. Vereevken, and R. Winand, Study of the mechanism of anodic dissolution of Cu2S, Metallurgical Transactions, vol.5, pp.127-134, 1974.

D. Buttineli, R. Lavecchia, F. Pochetti, A. Geveci, N. Guresin et al., Leaching by ferric sulphate of raw and concentrated copper-zinc complex sulphide ores, International Journal of Mineral Processing, vol.36, issue.3-4, pp.245-257, 1992.
DOI : 10.1016/0301-7516(92)90047-Z

K. J. Cathro, Recovery of copper from chalcopyrite by means of a cupric chloride leach, Paper presented at the International Symposium on Copper Extraction & Refining, pp.777-792, 1976.

F. Coeuret, Reacteurs à electrodes volumiques, Source inconnue, pp.351-372

F. Coeuret, L'electrode poreuse percolante (EPP)???III., Electrochimica Acta, vol.21, issue.3, pp.203-213, 1976.
DOI : 10.1016/0013-4686(76)80007-2

T. F. Cimson and Z. B. Rozhdestvenscaja, Electrochemical studies on sulfide and oxide minerais, Zhurnal Analaticeskij Himii, vol.36, issue.10, pp.1933-1938, 1981.

J. Conde, Contribution à la valorisation des Amas -pyriteux -Etude de la cinétique de dissolutino de la chalcopyrite par les sels ferrique, 1974.

D. Kocabag and M. R. Smith, The effect of grinding media and galvanic interactions upon the flotation of sulphide minerais, Complex Sulfides. Processing of ores Concentrates and By-Products. Fall meeting, pp.55-81, 1985.

W. J. Craigen and M. J. Nad-beattie, Economies of chemical methods for copper extraction & refining, paper presented at the Canadian Chemical Conference, 1985.

W. J. Craigen, F. J. Kelly, D. H. Bell, and J. A. Wells, Evaluation of the CANMET Ferric Chloride Leach (FCL) process for treatment of complex base-metal sulphide ores, 1990.
DOI : 10.1007/978-94-009-0809-3_17

F. K. Crundwell, The influence of the electronic structure of solids on the anodic dissolution and leaching of semiconducting sulphide minerals, Hydrometallurgy, vol.21, issue.2, pp.155-190, 1988.
DOI : 10.1016/0304-386X(88)90003-5

R. F. Dalton, G. Diaz, R. Priee, and A. D. Zunkel, The cuprex metal extraction process: Recovering copper from sulfide ores, JOM, vol.43, issue.8, pp.51-56, 1991.
DOI : 10.1007/BF03221105

J. M. Demarthe, L. Gandon, and . Georgeaux, A new hydrometallurgical process for copper, Hydrometallurgy and Eletrometallurgy of Copper, pp.825-848, 1976.

G. P. Demopoulos and P. A. Distin, Ferric chloride leaching of sulphidized chalcopyrite, Hydrometallurgy, vol.10, issue.1, pp.111-122, 1983.
DOI : 10.1016/0304-386X(83)90081-6

. Dresher, Chemical processing, Mining Engeniering, pp.58-60, 1975.

J. E. Dutrizac, The kinetics of dissolution of chalcopyrite in ferric ion media, Metallurgical Transactions B, vol.12, issue.no. 4, pp.9-431, 1978.
DOI : 10.1179/000844373795148548

J. E. Dutrizac, The dissolution of chalcopyrite in ferric sulfate and ferric chloride media, Metallurgical Transactions B, vol.11, issue.2, pp.12-371, 1981.
DOI : 10.1179/000844373795148548

J. E. Du-trizac, Ferric iron leaching from different localities, Metall. Trans., B, pp.13-303, 1982.

J. E. Dutrizac, Elemental sulphur formation during the ferric chloride leaching of chalcopyrite, Hydrometallurgy, vol.23, issue.2-3, pp.153-176, 1990.
DOI : 10.1016/0304-386X(90)90002-J

J. E. Dutrizac, The leaching of sulfide minerais in chloride media, Hydrometallurgy, issue.2, pp.29-30, 1990.

J. E. Dutrizac, Elemental sulphur formation during the ferric chloride leaching of chalcopyrite, Hydrometallurgy, vol.23, issue.2-3, pp.153-176, 1992.
DOI : 10.1016/0304-386X(90)90002-J

N. 1. Eliseev, L. A. Nemeshaeva, and F. F. Boriskov, Electrochemicalleaching of pyrite, Elektron. Obrab. Mater, issue.6, pp.38-41, 1988.

M. A. Enriquez-granados, D. Hutin, and A. Storck, The behaviour of porous electrodes in a flow-by regime???II. experimental study, Electrochimica Acta, vol.27, issue.2, pp.303-311, 1982.
DOI : 10.1016/0013-4686(82)80019-4

P. K. Everett, The DEXTEC copper process, Extractive Metallurgy, Institute ofMining and Metallurgy, pp.21-23, 1981.

A. W. Fletcher, Future Potential for Chloride Metallurgy, paper presented at the SME Annual Meeting, 1986.

W. Fuchs, Extraction of sulfide ores with hot concentrated sulfuric acid, German patent, Canadian patent 964, pp.815-513, 1969.

A. Gaunand, D. Hutin, and C. , Potential distribution in flow -through porous electrodes under limiting current conditions, Electrochemica. Acta, pp.93-97, 1977.

S. Germain and F. Goodridge, Copper deposition in a fluidized bed cell, Electrochemica Acta, vol.21, pp.549-551, 1976.

E. Ghali, B. Dandapani, and A. Et-lewenstam, Electrodissolution of synthetic covellite in hydrochloric acid, Journal of Applied Electrochemistry, vol.101, issue.96, pp.369-376, 1982.
DOI : 10.1007/BF00615104

S. Guy and C. P. Broadbent, Formation of copper(I) sulphate during cupric chloride leaching on a complex Cu/Zn/Pb ore, Hydrometallurgy, vol.11, issue.3, pp.277-288, 1983.
DOI : 10.1016/0304-386X(83)90048-8

S. Guy, C. P. Broadbent, G. J. Lawson, and J. D. Jackson, Cupric chloride leaching of a complex copper/zinc/lead ore, Hydrometallurgy, vol.10, issue.2, pp.243-255, 1983.
DOI : 10.1016/0304-386X(83)90008-7

F. Habashi and R. Dugdale, The Action of concentrated Sulfuric Acid on Chalcopyrite, Erzmetall, vol.65, issue.6, pp.269-274, 1974.

F. Habashi and T. Toor, Aqueous oxidation of chalcopyrite in hydrochloric acid, Metallurgical Transactions B, vol.2, issue.no.1, pp.49-56, 1974.
DOI : 10.1007/BF02917578

P. D. Harvey and . S. Butler-1, Raman spectra of orthorhombic sulfur at 40 K, Journal of Raman Spectroscopy, vol.8, issue.4, pp.329-334, 1986.
DOI : 10.1107/S0365110X55002089

W. W. Harvey and F. Dudas, Hydrochloric acid leach process for copper concentrates, Trans. SME/ AIME, vol.262, pp.46-57, 1977.

F. P. Haver and M. M. Wong, Recovery of Copper, Iron, and Sulfur from Chalcopyrite Concentrate using a Ferric Chloride Leach, JOM, vol.30, issue.2, pp.25-29, 1971.
DOI : 10.1007/BF03355683

F. P. Haver, R. D. Baker, and M. M. Wong, Improvements in ferric chloride leaching of chalcopyrite concentrates, U.S. Bur. Mines. RI, vol.8007, 1975.

F. P. Haver and M. M. Wong, Recovery of Copper, Iron, and Sulfur from Chalcopyrite Concentrate using a Ferric Chloride Leach, JOM, vol.30, issue.2, pp.25-29, 1971.
DOI : 10.1007/BF03355683

W. C. Hazen, for Cyprus Metallurgical Process Coorporation, USA. Canadien Patent nos. 1,012, p.89651, 1977.

M. He and T. , The anodic dissolution of chalcocite in an ammoniacal environment, J. Electroana1Chem, vol.81, pp.161-170, 1977.

E. Hillrichs and R. Bertram, Anodic dissolution of copper sulphides in sulphuric acid solution, Hydrometallurgy, issue.11, pp.195-206, 1983.

E. Hillrichs and R. Bertram, Anodic dissolution of copper sulphides in sulphuric acid solution. 1. The anodic decomposition of Cu2-xS, Hydrometallurgy, issue.11, pp.181-193, 1985.

T. Hirato, M. Kinoshita, Y. Awakura, and H. Majima, The leaching of chalcopyrite with ferric chloride, Metallurgical Transactions B, vol.32, issue.2, pp.19-28, 1986.
DOI : 10.1016/S0022-0728(81)80549-9

T. Hirato, H. Majima, and Y. Awakura, The leaching of chalcopyrite with cupric chloride, Metallurgical Transactions B, vol.20, issue.2, pp.31-39, 1987.
DOI : 10.1179/000844385795448434

J. Hiskey, B. Wadsworth, and M. E. , Galvanic conversion of chalcopyrite, Metallurgical and Materials Transactions B, vol.23, issue.1, pp.183-190, 1975.
DOI : 10.1179/cmq.1971.10.1.3

J. B. Hiskey and M. E. Wadsworth, Process and fundamental considerations in selected hydrométallurgical systems, p.303, 1981.

J. E. Hoffmann, Winning copper via chloride chemistry???An elusive technology, JOM, vol.43, issue.8, pp.48-50, 1991.
DOI : 10.1007/BF03221104

M. Holo and E. Peters, Direct electrorefining of chalcocite, J. Electroanal. Chem, vol.118, pp.345-364, 1981.

C. 1. House and G. H. Kelsall, Hydrometallurgical reduction of Sn02, CuFeS2 and PbS by electrogenerated Cr(II) and Y(Il) solutions, Paper peresented at the Extractin Metallurgy '85 symposium, organized by the Institution of Mining and Metallurgy and, London from 9 to 12 September, pp.659-682, 1985.

T. Huh and J. W. Evans, Electrical and Electrochemical Behavior of Fluidized Bed Electrodes, Journal of The Electrochemical Society, vol.134, issue.2, pp.308-317, 1987.
DOI : 10.1149/1.2100452

S. Ilangovan, D. R. Nagaraj, and K. I. Vasu, Electrometallurgy of chalcopyrites -II : Copper powder from slurry anodes, J. Electrochem. Soc. India, pp.24-28, 1975.

G. J. Janz, J. R. Downey, . Rodunere, G. J. Waclilczyc, J. W. Coutts et al., Raman studies of sulfur-containing anions in inorganic polysulfides. Sodium polysulfides, Inorganic Chemistry, vol.15, issue.8, pp.1759-1762, 1976.
DOI : 10.1021/ic50162a004

G. A. Jauregui and R. A. Reyes, Anodic electrooxidation of a copper concentrate, Hydrometallurgy, vol.17, issue.3, pp.281-294, 1987.
DOI : 10.1016/0304-386X(87)90059-4

D. L. Jones, The leaching of chalcopyrite, 1974.

D. L. Jones and . E. Peters, The leaching of chalcopyrite with ferric sulfate and ferric chloride, Paper presented at the International Symposium on Copper Extraction & Refining, pp.637-653, 1976.

N. Jyothi, G. P. Brahmaprakash, and R. Ramananda, Role of galvanic intereaction in the bioleaching of mixed sulphides, Paper presented at the First International Conference on Hydrometallurgy (ICHM '88), ed. by Zheng Yulian and Xu Jiazhong, pp.111-115, 1988.

G. H. Kestall and P. W. Page, Electrochemistry in mineral and metal processing, 1984.

D. F. Koch and R. J. Mc-intyre, The application of reflectance spectroscopy to a study of the anodic oxidation of cuprous sulphide, Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, vol.71, issue.3, p.285, 1976.
DOI : 10.1016/S0022-0728(76)80015-0

L. B. Sh and M. Shami, Electrochemical oxidation of puri te slurries, J. Electrochem. Soc, vol.133, issue.7, pp.1364-1368, 1986.

J. Li, X. Zhu, and E. Wadsworth, Raman spectroscopy of natural and oxidized metal sulphides, P aperpresented at the TMS Annual Meeting in Denever, pp.229-244, 1993.

K. C. Liddell and R. G. Bautista, A partial equilibrium model to characterize the precipitation of ferric ion during the leaching of chalcopyrite with ferric sulfate, Metallurgical Transactions B, vol.12, issue.3, pp.5-15, 1983.
DOI : 10.1007/BF00208032

.. F. Masterson-1 and J. W. Evans, Fluidized bed electrowinning of copper; experiments using 150 ampere and 1,000 ampere cells and some mathematical modeling, Metallurgical Transactions B, vol.11, issue.6, pp.3-13, 1982.
DOI : 10.1149/1.2129239

G. W. Mcdonald, T. J. Udovic, J. A. Dumesic, and S. H. Langer, Equilibria associated with cupric ch1oride 1eaching of chalcopyrite concentrate, Hydrornetallurgy, pp.125-135, 1984.

D. J. Mackinnon, Fluidized-bed anodic dissolution of covellite, pp.65-76, 1976.

Y. D. Matyskin and N. P. Kashpurova, Investigation of the kinetics of dissolving iron, nickel and copper sulfides in ferric chloride solutions, Zurnal Prikladnoj Hirnii, vol.54, issue.2, pp.148-152, 1981.

G. W. Mcdonald and S. H. Langer, Cupric chloride leaching of rnodel sulfur cornpounds for simple copper ore concentrates, Metall. Trans. B, issue.144, pp.559-570, 1983.

D. J. Mckay, The direct electrorefining of copper matte, JOM, vol.44, issue.2, pp.44-48, 1993.
DOI : 10.1007/BF03222351

R. S. Mcmillan, D. J. Mackinnon, and J. E. Dutrizac, Anodic dissolution of n-type and p-type chalcopyrite, Journal of Applied Electrochemistry, vol.126, issue.6, pp.743-757, 1982.
DOI : 10.1007/BF00617495

J. H. Mcnamara, A Hydrornetallurgical Process fo Copper, Paper presented at the AIME Annual Meeting, 1978.

S. G. Mehendale, S. Vencatachalam, and R. Mallikarjunan, Studies on the anodic dissolution of copper matte, Hydrornetallurgy, pp.195-204, 1982.

T. Mizoguchi and F. Habashi, Aqueous Oxidation of Lead Sulphide Concentra te in Hydrochloric Acid, Trans. Instn. Min. Metall, pp.14-20, 1983.

D. Mowla, Application of volumetric electrodes to the recuperation of metals in industrial effluents???III. Potential distributions and design of radial field electrodes, Electrochimica Acta, vol.28, issue.6, pp.839-846, 1983.
DOI : 10.1016/0013-4686(83)85156-1

T. K. Mukherjee, R. C. Hubli, and C. K. Gupta, A cupric chloride-oxygen leach process for a nickel-copper sulphide concentrate, Hydrometallurgy, vol.15, issue.1, pp.25-54, 1985.
DOI : 10.1016/0304-386X(85)90064-7

P. B. Munoz, J. D. Miller, and M. E. Wadsworth, Reaction mechanism for the acid ferric sulfate leaching of chalcopyrite, Metallurgical Transactions B, vol.27, issue.l, pp.149-158, 1979.
DOI : 10.1007/BF02652458

J. Mycroft and R. , Detection of sulphur and polysulphides on electrochemically oxidized pyrite surfaces by X-ray photoelectron spectroscopy and Raman spectroscopy, Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, vol.292, issue.1-2, pp.139-152, 1990.
DOI : 10.1016/0022-0728(90)87332-E

L. A. Nemeshaeva, K. Z. Brainina, and . Eliseev, Formation of sulfur film during anodic dissolution of sulfide minerais, Elektron. Obrab. Mater, issue.13, pp.51-53, 1990.

L. A. Nemeshaeva and E. A. Nechaev, Procedure for the selection of surfactants intensifying the electrochemicalleaching of chalcopyrite in sulfuric acid solutions, Eliseev N. 1. and Brainina, Kh. Z. Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol, vol.30, issue.12, pp.87-90, 1987.

P. Neou-singouna and G. Fourlaris, A kinetic study of the ferric chloride leaching of an iron-activated bulk sulfide concentrate, Hydrometallurgy, vol.23, issue.2-3, pp.203-220, 1990.
DOI : 10.1016/0304-386X(90)90005-M

B. R. Palmer, C. 0. Nebo, M. F. Rau, and M. C. Fuerstenau, Rate phenomena involved in the dissolution of chalcopyrite in chloride bearing lixiviants, Metallurgical Transactions B, vol.10, issue.2, pp.12-595, 1981.
DOI : 10.1007/BF02654332

R. S. Parikh and K. C. Liddell, Mechanism of anodic dissolution of chalcocite in hydrochloric acid solution, Industrial & Engineering Chemistry Research, vol.29, issue.2, pp.187-193, 1980.
DOI : 10.1021/ie00098a007

R. S. Parikl and K. C. Liddell, Anodic dissolution of chalcocite in chloride media, Proc.-Electrochem. Soc., N°2, pp.325-338, 1988.

P. Pascal, Nouveau traité de chimie minérale, p.155, 1957.

B. C. Paul, H. Y. Sohn, and M. K. Mccarter, Model for ferric sulfate leaching of copper ores containing a variety of sulfide minerais : Part I. Modeling uniform size ore fragments, Metall. Trans. B, issue.5, pp.23-537, 1992.

B. C. Paul, H. Y. Sohn, and M. K. Mccarter, Model for ferric sulfate leaching of copper ores containing a variety of sulfide minerais : Part II. Process modeling of in situ operations, Metall. Trans. B, issue.5, pp.23-549, 1992.

J. Paynter, A review of copper hydrometallurgy, 1973.

E. Peters, The physical chemistry on hydrométallurgy, Proceeding of Intern, Symp. on Hydrometallurgy, 1973.

E. Peters and H. Majima, Electrochemistry of sulfides dissolution in hydrometallurgical systems, 1968.

E. Peters and H. Majima, Electrochemical reactions of pyrite in acid perchlorate solutions, Canadian Metallurgical Quarterly, vol.31, issue.3, pp.111-117, 1972.
DOI : 10.1179/cmq.1968.7.3.111

J. D. Prater, P. B. Queneau, and T. J. Hudson, The Sulfation of Copper-Iron Sulfides with Concentrated Sulfuric Acid, JOM, vol.12, issue.5, pp.23-27, 1970.
DOI : 10.1007/BF03355675

D. C. Priee, Application of chronopotentiometric analysis to the anodic treatment of copper sulphides, Met. Trans. B, 12 B, issue.6, pp.231-239, 1981.

D. W. Priee and G. W. Warren, The influence of silver ion on the electrochemical response of chalcopyrite and other mineral sulfide electrodes in sulfuric acid, Hydrometallurgy, vol.15, issue.3, pp.303-324, 1986.

J. D. Rimstidt, J. A. Chermak, and P. M. Gagen, Rates of reaction of Gal ena, Sphalerite, Chalcopyrite and Arsenopyrite with Fe(III) in Acidic Solutions, Environmental Geochemistry of Sulfide Oxidation, 1993.

G. M. Ritcey, L. B. Priee, and K. T. , Evaluation and selection of extractants for the separaton of Cu and Zn from chloride leach liquor, pp.197-222, 1982.

N. N. Saxena and N. R. Mandre, Mixed control kinetics of copper dissolution for copper ore using ferric chloride., H ydrometall ur gy, pp.111-117, 1992.

F. W. Schweitzer and R. Livingstone, Duval's CLEAR hydrometallurgical process Chloride hydrometallurgy, pp.221-227, 1982.

G. B. Shakhtakhtinskii, G. R. Askerov, and A. A. Askerova, Leaching ofFilizchaisk polymetallic sulfide ores with ferric chloride solution, Azerb. Khim. Zh, issue.3, pp.106-109, 1986.

V. Srinivasan, Comparison of the anodic dissolution behavior of Butte and transvaal chalcocite, Metallurgical transactions. B, Process metallurgy, pp.879-882, 1993.

M. H. Stanczyc and C. Et-rampacek, Oxidation leaching of copper sulfides in acidic pulp at elevated temperatures and pressures, U.S. Bureau of Mines, p.6193, 1963.

Z. D. Stankovic, The anodic dissolution reaction of chalcopyrite, Erzmetall, pp.623-628, 1986.

K. N. Subramanian and P. H. Jennings, Review of the hydrométallurgy chalcopyrite concentrates Can, Metall. Q, vol.11, pp.387-400, 1972.

B. L. Tiwari, J. Kolbe, and H. W. Hayden, Leaching of high-solids, attritor-ground chalcopyrite concentrate byin situ generated ferric sulfate solution, Metallurgical Transactions B, vol.203, issue.11, pp.89-93, 1980.
DOI : 10.1007/BF02825677

S. Ushiodz, Raman Scattering from Photons in Iron Pyrite (FeS2, Solid State Communications, pp.307-310, 1972.

A. H. Usul and R. Tolun, Electrochemical study of the pyrite-oxygen-xanthate system, International Journal of Mineral Processing, vol.1, issue.2, pp.135-140, 1974.
DOI : 10.1016/0301-7516(74)90009-X

T. Vargas and . Inman-0, The anodic dissolution of chalcopyrite in water + acetonitrile solutions, Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, vol.119, issue.1, pp.25-40, 1981.
DOI : 10.1016/S0022-0728(81)80121-0

S. Venkatachalam and R. Mallikarjunan, Direct electrorefining of cuprous sulphide and copper matte, Trans.Inst.Min.Metall, vol.77, pp.45-52, 1968.

. S. Venkatachalam and R. Mallikarjunan, Electrode potentials and anodic polarization of sulphides, Trans.Inst.Min.Metall, pp.181-188, 1970.

S. Venkatachalam and R. Mallikarjunan, Laboratory sca1e studies on a new procedure for the recovery of electrolytic copper, Trans. Ind. Inst. Met, vol.24, issue.2, pp.29-38, 1971.

A. Vizsollyi, H. Veltman, I. H. Warren, and V. N. Et-mackiw, Copper and elemental sulphur from chalcopyrite by pressure leaching, JOM, vol.19, issue.2, pp.52-58, 1967.
DOI : 10.1007/BF03378656

D. J. Vaughan and G. J. , Mineral chemistry of mineral Sulhhides, 1978.

H. Vogt, T. Chattopaddhyay, and H. J. Stolz, Complete first-order Raman spectra of the pyrite structure compounds FeS2, MnS2 AND SiP2, Journal of Physics and Chemistry of Solids, vol.44, issue.9, pp.869-873, 1983.
DOI : 10.1016/0022-3697(83)90124-5

A. T. Walker and A. A. Wragg, Mass transfer in fluidised bed electrochemical reactors, Electrochimica Acta, vol.25, issue.3, pp.323-330, 1979.
DOI : 10.1016/0013-4686(80)90013-4

G. W. Warren and M. E. Wadsworth, The electrochemical oxidation of chalcopyrite in ammoniacal solutions, Metallurgical Transactions B, vol.26, issue.1, pp.289-297, 1984.
DOI : 10.1179/000844381795270183

G. W. Warren, M. E. Wadsworth, and S. M. El-raghy, Passive and transpassive anodic behavior of chalcopyrite in acid solutions, Metallurgical Transactions B, vol.24, issue.4, pp.571-579, 1982.
DOI : 10.1016/S0022-0728(81)80549-9

K. H. Wedepohl, The composition of the Upper Earth's Crust and the Natural Cycles of Selected Metals Metals and their compounds in the environnement, Metaks in Natural Raw materials. Natural Resources, p.5, 1991.

G. M. Yashina and N. L. Olerskaya, Study of the electrochernical behavior of pyrite according to the potential drop curves, Fiz. -Tekh, Probl. Razrab. Polezn. Iskop, issue.6, pp.113-117, 1979.

Z. L. Yin, H. Y. Jiang, Y. D. Shu, and R. R. Zhao, The anodic oxidation of pyrite in the solution of sulphuric acid and sulphate, Paper presented at the First International Conference on Hydrometallurgy (ICHM '88), pp.623-626, 1988.

X. Zhu, J. Li, and M. E. Wadsworth, Kinetics of the transpassive oxidation of pyrite, Paper peresented at the TMS Annual Meeting in Denever, pp.355-369, 1993.

Y. Zhao, H. Li, H. Cai, Y. Yu, and Y. Zhu, Simultaneous production of hydrogen and oxidation of pyrite slurries BIBLIOGRAPHIE Rapports : Gaballah. 1. et lvanaj S., New approach for the selective concentration of valuable elements from concentrates and industrial wastes, Intenational Journal ofhydrogen energy Contract, vol.17, issue.10, pp.763-766, 1991.

. 1. Gaballah and S. Et, New approach for the selective concentration ofvaluable elements from concentrates and industrial wastes, Contract N°: MA2M-CT90 -0008, p.32, 1992.

. 1. Gaballah and S. Et, New approach for the selective concentration of valuable elements from concentrates and industrial wastes, Contract N° : MA2M -CT90 -0008, p.35, 1992.

. 1. Gaballah and S. Et, New approach for the selective concentration of valuable elements from concentrates and industrial wastes, Contract N°: MA2M-CT90-0008, p.40, 1993.

C. 1. Actes-de, S. Lvanaj, B. Fenouillet, and G. Lacoste, Electrochemical treatement of a natural chalcopyrite ore with a high content of pyrite in a, Paper presented at the TMS Annual Meeting The Minerais, Metals & Materials, pp.109-123, 1994.

. Gaballah, Electrochemical dissolution of a chalcopyrite concentrate in HCl solutions by slurry electrodes, Paperpresented at the TMS Annual Meeting, 1994.

P. Aguirre, . Gaballah-1, B. Fenouillet, S. Lvanaj, G. Lacoste et al., Recovery of zinc, copper and nickel from industriai effluents generated by the electroplating units using the "3PE" technology, Separation processes: Heavy Metais, Ions and Minerais lvanaj S. and Gaballah 1., Oxidation of chalcopyrite by 'in-situ' eiectrogenerated Feiii and Cu II using an ion exchange membrane, Separation processes : Heavy Metais, The Minerais, Metals & Materials, pp.257-267, 1994.

V. 6. Réduction-Électrochimique and .. , 106 VII. 6. 1. Réduction en mode galvanostatique, p.106

I. Courbe, obtenue après 15 h d'oxydation à 0,9 V vers, p.83

V. Tableau, 1 Taux d'extraction de Cu et de Fe en fonction de courant après 72 h