Invention Grant
- Patent Title: Methods for improving the recovery of metal leaching agents
- Patent Title (中): 改善金属浸出剂回收率的方法
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Application No.: US10895794Application Date: 2004-07-21
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Publication No.: US07799294B2Publication Date: 2010-09-21
- Inventor: Gary A. Kordosky , Andrew Nisbett
- Applicant: Gary A. Kordosky , Andrew Nisbett
- Applicant Address: DE Duesseldorf
- Assignee: Cognis IP Management GmbH
- Current Assignee: Cognis IP Management GmbH
- Current Assignee Address: DE Duesseldorf
- Main IPC: C22B3/00
- IPC: C22B3/00

Abstract:
Processes for metal leaching/solvent extraction are described which comprise: (a) providing a first aqueous leach pulp which comprises a mixture of leached solids and an aqueous leach solution comprising a metal, a leaching agent and water; (b) subjecting the first aqueous leach pulp to a first solid-liquid separation to provide a first clarified aqueous leach solution and a second aqueous leach pulp, wherein the second aqueous leach pulp comprises the leached solids at a % solids level greater than the first pulp; (c) subjecting the first clarified aqueous leach solution to a first solvent extraction prior to any significant dilution, whereby a first aqueous raffinate is obtained; (d) subjecting the second aqueous leach pulp to a second solid-liquid separation with dilution via an aqueous stream to obtain a second clarified aqueous leach solution; and (e) subjecting the second clarified aqueous leach solution to a second solvent extraction whereby a second aqueous raffinate is obtained.
Public/Granted literature
- US20050031512A1 Methods for improving the recovery of metal leaching agents Public/Granted day:2005-02-10
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