Patents Assigned to OZ Minerals Limited
  • Ore leach method with aqueous sulfuric acid containing ferric ions
    Patent number: 7799295
    Abstract: There is provided a method for leach extraction of copper/iron/sulphur ores and concentrates including leaching the mineral with an aqueous stream containing ferric ions and sulphuric acid in the presence of oxygen, the aqueous stream including a solution formed by reaction of basic ferric sulphate with excess suphuric acid. Integrated methods of forming and releaching basic ferric sulphate are also described.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: September 21, 2010
    Assignee: OZ Minerals Limited
    Inventors: David Dreisinger, Graham Pratt, Kenneth Gordon Baxter