Patents by Inventor Ewen J Silvester

Ewen J Silvester 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).

  • Patent number: 7150357
    Abstract: A method of recovering a target mineral from an ore containing the target mineral and an iron sulphide mineral comprising the steps of: a) grinding the ore to liberate target mineral from the iron sulphide mineral; b) forming a pulp of said ore; c) selecting a collector having the structure as follows: X—R—Y where R is a branched or straight chain hydrophobic hydrocarbon or polyether chain, and X and Y represent metal coordinating functional groups, d) add the collector to the pulp at a concentration at which the target mineral is able to be floated in preference to the iron sulphide mineral; and e) subjecting the pulp to froth flotation. The metal coordinating sulphur based functional groups may be identical or different.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: December 19, 2006
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Theo Rodopoulos, Ewen J Silvester
  • Publication number: 20040200760
    Abstract: A method of recovering a target mineral from an ore containing the target mineral and an iron sulphide mineral comprising the steps of: a) grinding the ore to liberate target mineral from the iron sulphide mineral; b) forming a pulp of said ore; c) selecting a collector having the structure as follows: X-R-Y where R is a branched or straight chain hydrophobic hydrocarbon or polyether chain, and X and Y represent metal coordinating functional groups, d) add the collector to the pulp at a concentration at which the target mineral is able to be floated in preference to the iron sulphide mineral; and e) subjecting the pulp to froth flotation. The metal coordinating sulphur based functional groups may be identical or different.
    Type: Application
    Filed: April 30, 2004
    Publication date: October 14, 2004
    Inventors: Theo Rodopoulos, Ewen J Silvester