公开(公告)号：US20230383378A1

公开(公告)日：2023-11-30

申请号：US18031747

申请日：2021-10-28

申请人： KEMIRA OYJ

发明人： Sampsa GREUS ,  Roderick ABINET ,  Niko OSTROW ,  Jussi RUOTSALAINEN ,  Ruan PRETORIUS

IPC分类号： C22B15/00 ,  C22B3/26 ,  C25C1/12

CPC分类号： C22B15/0084 ,  C22B15/0095 ,  C22B15/0071 ,  C22B3/26 ,  C25C1/12

摘要： The invention relates to a control system for a copper extraction process having at least a leaching phase, a solvent extraction phase and an electrowinning phase, the leaching phase comprising a post leach thickener. The control system comprises first measuring units to measure volume and total suspended solids in an influent of the post leach thickener, and at least one second measuring unit to measure at least total suspended solids relating to effluent of the post leach thickener. The control system comprises also a control unit to receive measurements of the first measuring units and the second measuring units. The control unit forms a control signal to a polymer dosing into the influent of the post leach thickener, and another control signal to an organic solvent dosing in the solvent extraction phase.