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AssigneeFLSmidth A/S
InventorsDavid J. Chaiko, Frank Baczek, Tom Walters, Sarah (Sally) Rocks, Carlos Eyzaguirre
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A method of improving metal leach kinetics and recovery during atmospheric or substantially atmospheric leaching of a metal sulfide is disclosed. In some embodiments, the method may comprise the steps of: (a) producing a metal sulfide flotation concentrate; (b) processing the metal sulfide concentrate in a reductive activation circuit that operates at a first redox potential, to produce a reductively-activated metal sulfide concentrate; and, (c) subsequently processing the activated metal sulfide concentrate in an oxidative leach circuit to extract metal values. In some disclosed embodiments, reductive activation steps may be employed prior to oxidative leaching steps (including heap leap leaching or bio-leaching steps). In some embodiments, physico-chemical processing steps may be employed during reductive activation and/or oxidative leaching. Systems for practicing the aforementioned methods are also disclosed.
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A method of improving metal leach kinetics and recovery during atmospheric or substantially atmospheric leaching of a metal sulfide, the method comprising:
A method of improving metal leach kinetics and recovery during atmospheric or substantially atmospheric leaching of a metal sulfide, the method comprising:
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A method of improving metal leach kinetics and recovery during atmospheric or substantially atmospheric leaching of a metal sulfide, the method comprising:
A method of improving metal leach kinetics and recovery during atmospheric or substantially atmospheric leaching of a metal sulfide, the method comprising:
A method of extracting a metal from a metal sulfide particle, comprising:
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A method of leaching a metal sulfide concentrate, comprising:
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A method of extracting a metal from a metal sulfide particle, comprising:
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A process for extracting a metal from a metal sulfide, comprising an oxidative leach of a metal sulfide particle that substantially reduces both the electrochemical passivation and mechanical passivation of a metal sulfide particle via a physicochemical mechanism.
Dependencies are inferred from the claim text.