Patents Assigned to O'Okiep Copper Company Ltd.
  • Methods of making cementitious compositions from waste products
    Patent number: 4756761
    Abstract: Methods for producing cementitious compositions from waste products, such as non-ferrous slags, or fossil fuel combustion residue, or ferrous slags, whereby the CaO and alumina contents of the waste products are adjusted as necessary to enable them to combine with a sulphate additive at elevated pH and so couple the faster reactions of the mineral Ettringite with the slower ones of the calcium silicates.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: July 12, 1988
    Assignee: O'Okiep Copper Company Ltd.
    Inventors: T. Peter Philip, Anthony L. Hannaford, Ernst Konick