C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 11/00 (2006.01) C22B 1/00 (2006.01) C22B 3/04 (2006.01) C22B 3/06 (2006.01) C22B 11/08 (2006.01)
Patent
CA 2235214
A method of treating a mined material which includes a sulphide mineral and iron or a concentrate of the mined material to improve the recovery of a valuable metal from the sulphide mineral is disclosed. The method comprises: (i) oxidising the sulphide mineral in the presence of ferric ions to make the valuable metal in the sulphide mineral more accessible to extraction; and (ii) oxidising ferrous ions generated in step (i) or derived from ion in the mined material with a mixture of sulphur dioxide and oxygen to produce ferric ions for step (i).
L'invention porte sur un procédé de traitement de minerais comportant un matériau sulfuré et du fer, ou de concentrés de minerais, permettant d'augmenter le taux d'extraction du métal recherché. Ledit procédé consiste: (i) à oxyder le minerai sulfuré en présence d'ions ferriques pour rendre le métal recherché plus facilement récupérable, (ii) à oxyder les ions ferreux résultant de l'étape (i) ou présents dans le fer du minerai, à l'aide d'un mélange de dioxyde de soufre et d'oxygène de manière à produire des ions ferriques pour l'étape (i).
Arias Jesus Alberto
Ridout & Maybee Llp
LandOfFree
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