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KINETIC STUDIES FOR GOLD LEACHING OF A REFRACTORY SULFIDE CONCENTRATE BY CHLORIDE–HYPOCHLORITE SOLUTION
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نویسنده
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Ghobeiti Hasab M. ,Rashchi F. ,Raygan Sh.
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منبع
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iranian journal of materials science and engineering - 2014 - دوره : 11 - شماره : 2 - صفحه:37 -47
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چکیده
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In this paper, gold leaching of a refractory sulfide concentrate by chloride–hypochlorite solution wasinvestigated and effects of stirring speed, temperature and particle size on the leaching rate were reported.experimental data for leaching rate of gold were analyzed with the shrinking–core model. results were consistent withchemical reaction control mechanism in the first 1 h of leaching and diffusion control mechanism in the second 1 h.apparent activation energy also was found to be 22.68 kj/mol in the first step and 3.93 kj/mol in the second step ofleaching.
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کلیدواژه
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Gold concentrate ,Non–cyanide leaching ,Chloride–hypochlorite ,Kinetic
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آدرس
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university of tehran, ایران, university of tehran, ایران, university of tehran, ایران
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Authors
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