Patents Assigned to OUTOTEC QYJ
  • METHOD FOR THE REMOVAL OF CHLORIDE FROM ZINC SULPHATE SOLUTION
    Publication number: 20120288424
    Abstract: The invention relates to a method for removing chloride from zinc sulphate solution in conjunction with zinc production. According to the method, the chloride is removed from solution by means of monovalent copper, which is produced in a separate copper(I) oxide formation stage, in which the pH is regulated to the region of 4.5-5.
    Type: Application
    Filed: November 22, 2010
    Publication date: November 15, 2012
    Applicant: OUTOTEC QYJ
    Inventors: Mikko Ruonala, Kurt Svens, Antti Arpalahti, Karoliina Lepistö