OUTOTEC QYJ
OUTOTEC QYJ Patent applications | ||
Patent application number | Title | Published |
---|---|---|
20120288424 | METHOD FOR THE REMOVAL OF CHLORIDE FROM ZINC SULPHATE SOLUTION - 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. | 11-15-2012 |