3 patents
Utility
Recovery of copper from heap leach residues
4 Apr 23
A process for recovering copper from heap leach residues containing residual copper, includes identifying a production zone within the heap leach residues for secondary leaching, drilling wells into the heap at locations suitable for delivering leach solution into the production zone, injecting the leach solution including ferric ions through the wells and aerating the production zone to facilitate oxidative reactions within the production zone, and collecting effluent from the heap for copper recovery therefrom.
Hector Lizama, Danilo Arrué
Filed: 14 Mar 18
Utility
Zinc Alloy Coating Layer of Press-hardenable Steel
2 Mar 23
The present disclosure relates to a coating of a press hardened steel strip, the coating providing cathodic protection.
Weiping Sun, Nan Gao, Yihui Liu
Filed: 29 Jan 20
Utility
Recovery of Copper from Heap Leach Residues
28 Oct 20
A process for recovering copper from heap leach residues containing residual copper, includes identifying a production zone within the heap leach residues for secondary leaching, drilling wells into the heap at locations suitable for delivering leach solution into the production zone, injecting the leach solution including ferric ions through the wells and aerating the production zone to facilitate oxidative reactions within the production zone, and collecting effluent from the heap for copper recovery therefrom.
Hector LIZAMA, Danilo ARRUÉ
Filed: 13 Mar 18
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