Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Reexamination Certificate
2010-08-27
2011-11-22
Bos, Steven (Department: 1736)
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
C423S032000, C423S033000, C423S099000, C423S109000, C423S139000, C423S150100, C205S580000, C205S581000, C205S582000, C205S583000, C205S589000, C205S590000, C205S591000, C205S604000, C205S605000, C205S606000, C205S607000, C205S608000, C075S722000, C075S743000
Reexamination Certificate
active
08062614
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 is aqueous raffinate is obtained.
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Kordosky Gary A.
Nisbett Andrew
Bos Steven
Cognis IP Management GmbH
Diehl Servilla LLC
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