Patents by Inventor Barry Graham Lumsden

Barry Graham Lumsden 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).

  • Publication number: 20080308466
    Abstract: A metal or mineral compound collector for use in a froth flotation process so as to recover one or more desired minerals or metals; the collector comprising a functional group attached to a carbon chain; the functional group being a nitrile and the said chain having (11) or more carbon atoms. In a further form there is provided a method of recovering a metal or mineral compound from an ore comprising the steps of: wet grinding the ore to a desired particle size; adding water chemicals such as frothers or slurry-modifiers to the ground ore so as to prepare a slurry; adding an effective proportion of a collector comprising a functional group which has a carbon chain with a nitrile attached, said chain having (11) or more carbon atoms; supplying a gas stream to the slurry so as to generate a froth; and recovering the desired metal, mineral and/or sulphide thereof in the froth.
    Type: Application
    Filed: November 21, 2006
    Publication date: December 18, 2008
    Inventor: Barry Graham Lumsden