Structural and temperature sensitivity of leaching of chalcopyrite with iron(III) sulphate

摘要: Abstract In this study, the leaching of chalcopyrite with acid solution iron (III) sulphate was investigated. It has been found that rate may be favourably influenced by mechanical activation CuFeS 2 . The linear relationship between initial constant k o and ratio S / X describes joint influence on reaction increase in surface decrease content crystalline phase due to represents evidence structural sensitivity reaction. investigation temperature dependence (1) for mechanically activated region 333–368 K discloses a change mechanism at 363 K. can assumed influences self-diffusion ions copper iron. Its acceleration results fact chemical gradually assumes function determining stage. However, increasing thickness elemental sulphur non-consumed enhances retarding effect solid product.