C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/06 (2006.01) C22B 3/18 (2006.01) C22B 15/00 (2006.01)
Patent
CA 2532999
The invention provides a process for the oxidative leaching of a metal or metal compound from a material containing the metal or metal compound which includes at least one acid producing step and at least one acid consuming step, and wherein acid from the acid producing step is made at least partly available to the acid consuming step. The process may also include the use of a suitable intermediate agent to transfer oxidative power to the material to be leached, said intermediate agent preferably comprising iron or chloride.
L'invention concerne un procédé permettant la lixiviation oxydante d'un métal ou d'un composé métallique à partir d'un matériau contenant le métal ou le composé métallique. Ce procédé comporte au moins une étape de production d'acide et au moins une étape de consommation d'acide, l'acide issu de l'étape de production d'acide étant au moins partiellement utilisable pour l'étape de consommation d'acide. Le procédé peut également comprendre l'utilisation d'un agent intermédiaire approprié permettant de transférer le pouvoir oxydant au matériau à lixivier, ledit agent intermédiaire contenant de préférence du fer ou un chlorure.
Gowling Lafleur Henderson Llp
Mintek
LandOfFree
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