Extraction and separation of metals from solids using liquid cat

Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge

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204112, 204119, 423 24, 423 27, 423100, 423109, 423139, 423140, 423150, 75101R, 75101BE, C25C 108, C25C 112, C25C 116, C01G 310

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040081346

ABSTRACT:
Process for extraction and separation of metals utilizing the advantages of liquid-liquid extraction with cation exchangers without requiring the equivalent addition of alkali. The process is based on a combination of leaching the metal-containing raw materials with an organic acid (cation exchanger) and a subsequent use of the formed metal cationic complex in a liquid-liquid extraction process. In the said extraction process, the organic solution of metal complexes is used to recover and separate metal ions from an aqueous solution of metal salts.

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patent: 3511645 (1970-05-01), Goni
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patent: 3634070 (1972-01-01), Lindstrom
patent: 3663163 (1972-05-01), De Pree et al.
patent: 3666446 (1972-05-01), Cook et al.

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