Patents by Inventor Robert DeLaat

Robert DeLaat 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).

  • Separation of iron from value metals in leaching of laterite ores
    Patent number: 8916116
    Abstract: The invention provides a process for the leaching of a laterite ore, concentrate, tailings or waste rock for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore, followed by a liquid/solids separation step. The liquid obtained is subject to solvent extraction with a dialkyl ketone, to obtain a solution rich in iron and a raffinate. Separation of iron from cobalt and nickel is obtained.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: December 23, 2014
    Assignee: Process Research Ortech inc.
    Inventors: Vaikuntam I. Lakshmanan, Ramamritham Sridhar, Jonathan Chen, M. A. Halim, Robert DeLaat
  • SEPARATION OF IRON FROM VALUE METALS IN LEACHING OF LATERITE ORES
    Publication number: 20130149219
    Abstract: The invention provides a process for the leaching of a laterite ore, concentrate, tailings or waste rock for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore, followed by a liquid/solids separation step. The liquid obtained is subject to solvent extraction with a dialkyl ketone, to obtain a solution rich in iron and a raffinate. Separation of iron from cobalt and nickel is obtained.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 13, 2013
    Inventors: Vaikuntam I. Lakshmanan, Ramamritham Sridhar, Jonathan Chen, M. A. Halim, Robert DeLaat