Study on the effect of low-energy milling work and mechanoleaching on the chlorination of chalcopyrite

Subject Areas :

Hirbod  Ranjkesh ¹ (دانشجوی کارشناسی ارشد، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی)
Amirhosein  Emami ² (استادیار، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی)
Reza  EbrahiKahrizsangi ³ (دانشیار، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی)

Received: 2016-06-20 Accepted : 2016-06-20 Published : 2016-05-21

Keywords: chlorination, Mechanical activation, Mechanoleaching, Chalcopyrite, chlorine, Copper Chloride,

Abstract :

In this research, chlorination of chalcopyrite in a low-energy mill was carried out in order to convert chalcopyrite to copper chloride. Chalcopyrite milling was performed at ambient temperature and in different times and dry chlorine gas atmosphere. Also, chlorination process was combined by mechanoleaching using different solvents at different times. X-ray diffraction analysis was used to identify the phases formed in the samples. X-ray diffraction pattern of milled chalcopyrite powders showed that in the low-energy milling, after a specified time, chalcopyrite is converted to chloride of iron, copper and sulfur. Scanning electron microscope images were obtained to evaluate the products morphology and reaction kinetics. Eventually, after 20 hours milling, about 60 percent of chalcopyrite were converted into chlorides.

References:

[1]     A. K. Biswas. W. G & .Davenport, “Extractive Metallurgy of Copper”, Pergamon, Oxford, New York, 1976.

 

[2]     F. Aramu, T. Bressani & P. Manca, “Mossbauer Effect of Chalcopyrite” Nuovo Cimento, Vol. B51, No. 2, pp. 370-375, 1967.

 

[3]     S. R. Hall & J. M. Stewart, “Crystal Stractures Refinement of Chalcopyrite”, Acta Crystallogeraphica, Vol. B29, No. 3, pp. 579-585, 1973.

 

[4]     P. Balaz., “Mechanical activation in hydrometallurgy”, Int. J. Mineral processing, Vol. 72, pp. 341-354, 2003.

 

[5]       ا. عطائی ، س. شیبانی ، غ. خیاطی و س. اسدی کوهنجانی، "آلیاژسازی و فعال سازی مکانیکی فناوری تهیه نانو مواد"، انتشارات جهاد دانشگاهی واحد تهران، ص.19-28، 1385.

 

[6]       م. عنایتی و ز. صادقیان، " آلیاژسازی مکانیکی (اصول و کاربردها) " ، نشریه مهندسی متالورژی، ش. 20، ص. 44-55، 1384.

 

[7]     B. Lustman & F. Karze, “The Metallurgy of Zirconium”, Mc Graw-Hill Book Company, Inc, New York, 1995

 

[8]     S. K. Pradhan, B. Ghoshand & L. K. Samanta., “Mechano synthesis of nanocrystalline CuFeS2 chalcopyrite”, physica E33, Vol. 10, pp.144-146, 2006.

 

[9]     P. Balaz, TL. akacs, E. Boldizarova & E. Godocikova, “Mechanochemical transformations and reactivity in copper sulphids”, Journal of Physics and Chemistry of Solids, Vol. 64, pp. 1413-1417, 2003.