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(11)    Patent No :    AP 2019    (73) Applicant(s)       
(21)    Application No :    AP/P/2005/003455    OUTOKUMPU TECHNOLOGY OY, Riihitontuntie 7, FI-02200       
            Espoo,       
                   
(22)    Filing Date :    01.06.2004    Finland       
(24)    Date of Grant &    29.07.2009           
                   
(45)    Publication :

(30)    Priority Data            (72) Inventors   
    (33) Country    (31) Number    (32) Date    EKMAN Eero, Finland   
    FI    20030861    10.06.2003    LYYRA Juhani, Finland   
                   
                PEKKALA Pertti, Finland   
                et al       
                (74) Representative   
(84)    Designated State           
                   
    ZM            HONEY & BLANCKENBERG   
                   
(51)    International    Classification    B01D 11/04 (2006.01)    C22B 3/02 (2006.01)   
            C22B 3/26 (2006.01)       


(54)    Title

Method and equipment for purifying an extraction solution from aqueous entrainment and impurities

(57)    Abstract

The invention relates to a method and equipment with which an organic solution extraction solution is purified from entrainment of aqueous solution and impurities during hydrometallurgical liquid-liquid extraction. The method treats an organic extraction solution, which is loaded with a valuable metal or valuable substance from the aqueous solution. The purpose is to carry out the

physical separation of water droplets and the chemical removal of impurities

(56)    Documents Cited :    US 5 662 861 A    US 6 083 400 A    US 3 966 569 A

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