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Paper Information

Journal:   IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING   SPRING 2010 , Volume 7 , Number 2; Page(s) 30 To 35.
 
Paper: 

EFFECT OF MECHANICAL ACTIVATION ON THE KINETICS OF LEACHINGOFCHALCOPYRITE IN THE FERRIC SULFATE MEDIA

 
 
Author(s):  BAFGHI M.SH.*, EMAMI A.H., ZAKERI A., VAHDATI KHAKI J.
 
* SCHOOL OF METALLURGY AND MATERIALS ENGINEERING, IRAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, TEHRAN, IRAN
 
Abstract: 

The kinetics of chalcopyrite leaching in a ferric sulfate media for raw and mechanically activated samples has been investigated. It has been shown that the mechanism of leaching reaction is diffusion through the product layer and does not undergo any change as a result of mechanical activation in a wide range of experimental conditions. Leaching rate is strongly influenced by milling intensity and the effect of ball to powder mass ratio is stronger than milling time. Curve fitting of experimental data shows that leaching rate constant is approximately a linear function of ball to powder mass ratio, while it obeys a power function with regard to the milling time.

 
Keyword(s): KINETICS, MECHANICAL ACTIVATIONS, CHALCOPYRITE, MILLING, LEACHING
 
References: 
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