Patents by Inventor Stephen Scammell

Stephen Scammell 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).

  • TREATMENT OF AQUEOUS SUSPENSIONS
    Publication number: 20110188935
    Abstract: A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved whilst retaining the fluidity of the material during transfer, by combining with the material an effective rigidifying amount of aqueous solution of a water-soluble polymer. The process is particularly suitable for the treatment of the tailings underflow resulting from a mineral processing operation and the co-disposal of fine and coarse tailings fractions. In addition, liquor released during the rigidification step is of high clarity.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 4, 2011
    Inventors: Philip McColl, Stephen Scammell
  • Treatment of aqueous suspensions
    Patent number: 7901583
    Abstract: A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved while retaining the fluidity of the material during transfer, by combining with the material an effective rigidifying amount of aqueous solution of a water-soluble polymer. The process is particularly suitable for the treatment of the tailings underflow resulting from a mineral processing operation and the co-disposal of fine and coarse tailings fractions. In addition, liquor released during the rigidification step is of high clarity.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: March 8, 2011
    Assignee: Ciba Specialty Chemicals Water Treatments Ltd.
    Inventors: Philip McColl, Stephen Scammell
  • TREATMENT OF AQUEOUS SUSPENSIONS
    Publication number: 20100098493
    Abstract: A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved whilst retaining the fluidity of the material during transfer, by combining with the material an effective rigidifying amount of aqueous solution of a water-soluble polymer. The process is particularly suitable for the treatment of the tailings underflow resulting from a mineral processing operation and the co-disposal of fine and coarse tailings fractions. In addition, liquor released during the rigidification step is of high clarity.
    Type: Application
    Filed: December 22, 2009
    Publication date: April 22, 2010
    Inventors: PHILIP McColl, Stephen Scammell
  • Treatment of aqueous suspensions
    Publication number: 20060207946
    Abstract: A process in which material comprising an aqueous liquid with dispersed particulate solids is transferred as a fluid to a deposition area, then allowed to stand and rigidify, and in which rigidification is improved whilst retaining the fluidity of the material during transfer, by combining with the material an effective rigidifying amount of aqueous solution of a water-soluble polymer. The process is particularly suitable for the treatment of the tailings underflow resulting from a mineral processing operation and the co-disposal of fine and coarse tailings fractions. In addition, liquor released during the rigidification step is of high clarity.
    Type: Application
    Filed: January 7, 2004
    Publication date: September 21, 2006
    Applicant: CIBA SPECIALTY CHEMICALS WATER TREATMENTS LTD
    Inventors: Philip McColl, Stephen Scammell