THE OPTIMUM LEACHING CONDITIONS OF ARTViN MURGUL CHALCOPYRITE ORE IN HYPOCHLORITE SOLUTION

Year 2005, Volume: 9 Issue: 2, 6 - 11, 01.12.2005

Deniz İkiz Mustafa Gülfen Ali Aydın

Abstract

The optin1un1 leaching conditions or prin1ary chalcopyrite ore tl·on1 Artvin-Murgul region in Turkey have been
exan1ined in hypochlorite solution. 'The effects of various paran1eters as initial pH, hypochlorite concentration, stirring
speed, solid/liquid ratio and ternperature to the copper dissolution fron1 chalcopyrite were investigated. lt was found that
chc:1lcopyritc reacted \\'ith chlorine generated fron1 hypochlorite in acidic pH values. pi I cfTcctivcly decreased during the
di. solution. It was detern1incd that the optin1un1 leaching conditions \vere initial pll of 5-6~ hypochlorite concentration
of0.2 N for 4 g/L solid/liquid ratio. 600 rpn1 stirring speed and it was seen that sulphate forn1ation was over 50%.

Keywords

Chalcopyrite, Hypochlorite leaching, the optimum leaching conditions

References

• iaslti. l Clntlcopyrite its chemistry and Elurgy. Mc(ii*ext-'-l~lill. London (1978). rs. E.. l-lydrometallurgical process innovations. rometallurgy. 29. 431—459. (1992). l. A.. A preliminary research on acid pressure
• 'ting pyritic copper ore in Kure Copper Mine. ex. Minerals Iîngineering. 15. 1193—1197. Vi).
• '.fac. .l. ll.. lilemental sulphur formation during terric sulphate let-[citing ol" chalcopyrite. ulian Metallurgical Quarterly. 28(4).337-344. __.l) Ina. ll.. Awakura. Y.. l-lirolo. "1". and Tanaka. leaching ol” chalcopyrite in Ferric sulphate ions. (‘anadian Metallurgical Quarterly. 24(4) *91. (1985).
• R. P.. Dreisinger. D. B.. Peters. E. and King. F’assiyation o|" chalcopyrite during oxidative mg in sulphate media. l-lydrometallurgy. 39. t. (1995). :ik. 'l'. and Skrobian. M.. Acid leaching of tip)-rite in the presence of ozone. Canadian llurgical Quarterly. 29(2). 133-139 (1990). ::gler. '1'. and Swift. D. A.. Anodic u‘oehemistry ot ehalcopyrite. Journal of Applied _:trochemistry. 9. 545-554. (1979). u..teha_\'o. A. ().. lpinmoroti. K. 0. and A_iavi. O. 0..
• ‘e (solution kinetics ol" chalcopyrite with hydrogen ;.:r=.:toxide in sulphuric acid medium. Chemical and Biochemical lingineering Quarterly. 17(3). 213-218. (2003). l l l....- ERS.
• I20]. Vinals. _|_. Roca. A.. Hernandez. M. C. and Benaventc. ()... '1"opochemical transformation of enargite into copper oxide by hypochlorite leaching. l-lydrometallurgy. 68. 183-193 (2003).
• Li. W.. Coal desulfurization with sodium hypochlorite. Master Of Science in Chemical Enginering. West Virginia University-(2004).
• Curreli. L... Ghiani. M.. Surracco.. M. and Orru. G.. Beneliciation of a gold bearing enargite ore by flotation and Arsenic leaching with sodium hypochlorite. Minerals Engineering. 18(8). 849—854 (2005).
• Alkan. M.. Oktay. M.. Kocakerim M. M. and Çopur. M.. Solubility of chlorine in aqueous hydrochloric acid solutions. Journal of Hazardous Materials. Al 19. 13-18.(2005).