발간논문

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Vol.25, No.12, 845 ~ 852, 1987
Title
Acid Ferric sulfate leaching of Chalcopyrite (1)
최대규 Dae Kyu Choi
Abstract
The acid ferric s1fate leaching of the natural concentrated chalcopyrite was studied as a function of leaching time, temperature, particle size, H₂SO₂ and Fe＾(+++) concentration in order to obtain leaching data and analyse eaction kinetics. It has been confirmed that the rate limiting step of the reaction is diffusion through sulphur layer reaction product and activation energy is about 18.3 ㎉/㏖. The reaction rates were found to be nearly independent on H₂SO₄ concentration but significantly dependent on temperature and Fe＾(+++) concentration in case of very small particle size.
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