METHOD AND EQUIPMENT FOR PURIFYING AN EXTRACTION SOLUTION FROM AQUEOUS ENTRAINMENT AND IMPURITIES

摘要

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 extraction solution is scrubbed with an acidic aqueous solution. The acidic solution is discharged into the tank in several separate sub-streams. The flow diverts from horizontal to vertical and the direction of the separated solutions is deflected by means of picker fences (13, 14). The organic solution and the aqueous solution are removed in separate sub-streams. A settler comprises several discharge elements (12) for organic solution and suction elements (16, 24) for removing organic solution and aqueous solution respectively.