Patents by Inventor Ruan PRETORIUS

Ruan PRETORIUS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • A CONTROL SYSTEM OF A COPPER EXTRACTION PROCESS
    Publication number: 20230383378
    Abstract: 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.
    Type: Application
    Filed: October 28, 2021
    Publication date: November 30, 2023
    Inventors: Sampsa GREUS, Roderick ABINET, Niko OSTROW, Jussi RUOTSALAINEN, Ruan PRETORIUS