Selective cobalt extraction from nickel and manganese solutions
AssigneeAscend Elements, Inc.
InventorsChristophe Henri Robert Duhayon, Atefeh Azizitorghabeh
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Abstract
Methods of recovering nickel and manganese salts are disclosed. The method includes removing one or more impurities from an aqueous leach solution including cobalt, manganese, and nickel salts to produce a purified aqueous solution including the cobalt, manganese, and nickel salts. The method includes extracting the cobalt salt from the purified aqueous solution in a first liquid-liquid extraction step using an organic extractant to produce an aqueous raffinate solution including the nickel and manganese salts and a first loaded organic solution including the cobalt salt.
Claims20
A method of recovering nickel and manganese salts, comprising:
- removing one or more impurities from an acidic aqueous leach solution comprising cobalt, manganese, and nickel salts to produce a purified aqueous solution comprising the cobalt, manganese, and nickel salts;
- and
- extracting the cobalt salt from the purified aqueous solution in a first liquid-liquid extraction step using an organic extractant solution comprising an organic extractant to produce an aqueous raffinate solution comprising the nickel and manganese salts and a loaded organic solution comprising the cobalt salt.
A system for recovering nickel and manganese salts, comprising:
- an impurity removal stage constructed and arranged to remove one or more impurities from an aqueous leach solution comprising cobalt, manganese, and nickel salts to produce a purified aqueous solution comprising the cobalt, manganese, and nickel salts;
- and
- an extraction stage constructed and arranged to extract the cobalt salt from the purified aqueous solution to produce an aqueous raffinate solution comprising the nickel and manganese salts and a loaded organic solution comprising the cobalt salt.
Dependencies are inferred from the claim text.