LEACHING AID DURING A FERRIC CHLORIDE LEACH OF A METAL-SULPHIDE BEARING MATERIAL

摘要

TITLEThe use of a leaching aid during aferric chloride leach of ametal-sulphide bearing materialINVENTORSBernard H. LucasDavid Y. ShimanoABSTRACT OF THE DISCLOSUREThe present invention relates to an aqueous ferric chlorideleach process for the extraction of metal values from a metal-sulphide bearing material, the leach being carried out in thepresence of a leaching aid chosen from among salts of diesters ofsulphodicarboxylic acids. It, in particular, relates to theenhanced recovery of metal values from complex, metal-sulphidebearing materials such as, for example, fine grained, polymetallicsulphide ores, their concentrates or the like.