Patents Assigned to Rockwood Lithium Inc.
  • Production of high purity lithium compounds directly from lithium containing brines
    Patent number: 9988280
    Abstract: A process for reducing the amount of magnesium in a lithium-containing brine by adding an aqueous solution of KCl to the brine to precipitate at least some of the magnesium as carnallite salt is disclosed. Lithium salts prepared using this magnesium removal process are also disclosed.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: June 5, 2018
    Assignee: ROCKWOOD LITHIUM INC.
    Inventors: Andrew John Donaldson, Daniel Alfred Boryta
  • Production of lithium diphenylphosphide
    Patent number: 9464101
    Abstract: Lithium diphenylphosphide solutions in a solvent, e.g., diethoxymethane (DEM), that are more stable than when tetrahydrofuran (THF) is used as a solvent. Methods of producing them are also disclosed.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: October 11, 2016
    Assignee: ROCKWOOD LITHIUM INC.
    Inventors: Jeffrey Alan McCall, Mark J. Hintze
  • Production of lithium diphenylphosphide
    Patent number: 9175020
    Abstract: Lithium diphenylphosphide solutions in a solvent, e.g., diethoxymethane (DEM), that are more stable than when tetrahydrofuran (THF) is used as a solvent. Methods of producing them are also disclosed.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: November 3, 2015
    Assignee: Rockwood Lithium Inc.
    Inventors: Jeffrey Allen McCall, Mark J. Hintze
  • Production of high purity lithium compounds directly from lithium containing brines
    Patent number: 9005557
    Abstract: A process for reducing the amount of magnesium in a lithium-containing brine by adding an aqueous solution of KCl to the brine to precipitate at least some of the magnesium as carnallite salt is disclosed. Lithium salts prepared using this magnesium removal process are also disclosed.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: April 14, 2015
    Assignee: Rockwood Lithium Inc.
    Inventors: Andrew John Donaldson, Daniel Alfred Boryta
  • PRODUCTION OF HIGH PURITY LITHIUM COMPOUNDS DIRECTLY FORM LITHIUM CONTAINING BRINES
    Publication number: 20140044622
    Abstract: A process for reducing the amount of magnesium in a lithium-containing brine by adding an aqueous solution of KCl to the brine to precipitate at least some of the magnesium as carnallite salt is disclosed. Lithium salts prepared using this magnesium removal process are also disclosed.
    Type: Application
    Filed: October 16, 2013
    Publication date: February 13, 2014
    Applicant: Rockwood Lithium Inc.
    Inventors: Andrew John Donaldson, Daniel Alfred Boryta