Ferric chloride leaching of sulphidized chalcopyrite

摘要: Abstract Reactions between chalcopyrite and elemental sulphur at 320°C 400°C produce various combinations of covellite, nukundamite (Cu5,5 FeS6,5, pyrite depending on the content products. If all contained copper is transferred to iron pyrite, least 95% can be leached by ferric chloride with negligible dissolution up 70°C. At above 70°C, extracted from pyrite. When present, contents this compound are simultaneously, consequent loss selectivity further enhanced 70°C attack The increased rates extraction obtained following sulphidation result both breakdown a greater porosity.