Patents by Inventor Willem P. C. Duyvesteyn

Willem P. C. Duyvesteyn 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: 11821057
    Abstract: A method for extracting secondary metal values from a sulfuric acid leachate is provided. The method includes providing a leachate which contains a primary metal and a plurality of secondary metals, wherein the primary metal is selected from the group consisting of Cu, Li and Ni and is derived from sulfuric acid leaching of an ore; passing the leachate through a first ion exchange resin which is selective to, and releasably binds, the plurality of secondary metals; stripping the plurality of secondary metals from the second or third ion exchange resins, thereby obtaining a first extract; and recovering the secondary metals from the first extract.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: November 21, 2023
    Assignee: Scandium Internatlonal Mlning Corporatlon
    Inventor: Willem P. C. Duyvesteyn
  • Patent number: 11732326
    Abstract: Embodiments of the present disclosure may include method for extracting lithium from a mudstone ore. Embodiments of the present disclosure may also include a method for extracting lithium from a mudstone formation and sequestering carbon dioxide into the mudstone formation in situ.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: August 22, 2023
    Assignee: EXTRACTIVE METALLURGY CONSULTANCY, LLC
    Inventor: Willem P. C. Duyvesteyn
  • Patent number: 11691888
    Abstract: A method for preparing high purity alumina (HPA) is provided.
    Type: Grant
    Filed: May 15, 2021
    Date of Patent: July 4, 2023
    Assignee: Scandium International Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Patent number: 11673812
    Abstract: A method for extracting copper values from a low grade copper ore feedstock is provided.
    Type: Grant
    Filed: August 16, 2020
    Date of Patent: June 13, 2023
    Assignee: Scandium International Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20220393163
    Abstract: A lithium ion battery is provided which includes an LTO anode; an LNMO cathode; and an electrolyte. At least one of the cathode, anode and electrolyte is Sc doped. The cathode may have a composition within the range of LiNi0.5Mn1.495Sc0.005O4 to LiNi0.5Mn1.25Sc0.25O4 or, in some embodiments, LiNi0.5Mn1.495Sc0.005(1?0.01y)X0.005(0.01y)O4, wherein 0?y?50, and wherein X is one or more metals selected from the group consisting of yttrium, cerium, niobium and zirconium. The anode may have a composition within the range of Li4Ti4.99Sc0.01O12 to Li4Ti4.95Sc0.05O12 or, in some embodiments, Li4Ti4.995Sc0.005(1?0.01y)X0.005(0.01y)O12 to Li4Ti4.995Sc0.25(1?0.01y)X0.25(0.01y)O12, wherein 0?y?50, and wherein X is one or more metals selected from the group consisting of yttrium, cerium, niobium and zirconium.
    Type: Application
    Filed: June 4, 2021
    Publication date: December 8, 2022
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 11471984
    Abstract: A method for fabricating an article from an aluminum alloy is provided. The method includes providing an aluminum alloy containing at least 0.04 wt % Sc, at least 0.5 wt % Mn, at least 0.5 wt % Zr, at least 0.05 wt % Mg, and at least 90 wt % Al; casting the alloy into a sheet; subjecting the cast alloy to a thermal cycle which includes raising the temperature of the alloy along a first temperature gradient, holding the temperature of the alloy at a temperature T for a period of time t, and reducing the temperature of the alloy along a second temperature gradient; and utilizing the sheet in a brazing operation.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: October 18, 2022
    Assignee: Scandium International Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20210371294
    Abstract: A method for preparing high purity alumina (HPA) is provided.
    Type: Application
    Filed: May 15, 2021
    Publication date: December 2, 2021
    Inventor: Willem P.C. Duyvesteyn
  • Publication number: 20210347651
    Abstract: A method for extracting copper values from a low grade copper ore feedstock is provided.
    Type: Application
    Filed: August 16, 2020
    Publication date: November 11, 2021
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 11142809
    Abstract: A method is provided for extracting scandium values from a scandium bearing laterite ore. The method includes providing a portion of a scandium bearing laterite ore having an average particle size of no more than 200 mesh, leaching the ore to produce a leachate, and recovering scandium values from the leachate.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: October 12, 2021
    Assignee: Scandium International Mining Corp.
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20210277497
    Abstract: A method for extracting secondary metal values from a sulfuric acid leachate is provided. The method includes providing a leachate which contains a primary metal and a plurality of secondary metals, wherein the primary metal is selected from the group consisting of Cu, Li and Ni and is derived from sulfuric acid leaching of an ore; passing the leachate through a first ion exchange resin which is selective to, and releasably binds, the plurality of secondary metals; stripping the plurality of secondary metals from the second or third ion exchange resins, thereby obtaining a first extract; and recovering the secondary metals from the first extract. In some embodiments, prior to passing the leachate through the first ion exchange resin, the leachate is passed through a second ion exchange resin which is selective to, and releasably binds, one of the plurality of secondary metals.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 9, 2021
    Inventor: Willem P.C. Duyvesteyn
  • Publication number: 20210172041
    Abstract: A method for extracting metal values from a low grade primary metal oxide ore feedstock is provided. The method includes providing a low grade primary metal oxide ore containing a primary metal and scandium; subjecting the ore to acid leaching, thus yielding an acidic leachate; extracting the primary metal and scandium from the leachate, thereby yielding an acidic barren leachate; and using the acidic barren leachate in a subsequent iteration of the acid leaching step.
    Type: Application
    Filed: August 20, 2020
    Publication date: June 10, 2021
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 10988828
    Abstract: A method is provided for extracting scandium values from an ore feedstock. The method includes providing a feedstock of a copper ore which contains scandium values; extracting scandium values from the ore with a leaching solution, thereby obtaining a pregnant leachate; contacting the pregnant leachate with an ion exchange resin, thereby extracting scandium values from the pregnant leachate and forming a loaded extractant; stripping the scandium values from the loaded extractant with a stripping solution, thereby forming a loaded stripping solution; and precipitating the scandium values from the loaded stripping solution as a scandium-containing precipitate.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: April 27, 2021
    Assignee: Scandium Intrenational Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20200001407
    Abstract: A method for fabricating an article from an aluminum alloy is provided. The method includes providing an aluminum alloy containing at least 0.04 wt % Sc, at least 0.5 wt % Mn, at least 0.5 wt % Zr, at least 0.05 wt % Mg, and at least 90 wt % Al; casting the alloy into a sheet; subjecting the cast alloy to a thermal cycle which includes raising the temperature of the alloy along a first temperature gradient, holding the temperature of the alloy at a temperature T for a period of time t, and reducing the temperature of the alloy along a second temperature gradient; and utilizing the sheet in a brazing operation.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 10450634
    Abstract: A method (101) is provided for making a scandium-containing alloy. The method includes providing a molten metal (103), and mixing the molten metal with a scandium-containing precursor (113) which undergoes thermal decomposition at the temperature of the molten metal to produce scandium oxide, thereby producing a scandium-containing alloy.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: October 22, 2019
    Assignee: Scandium International Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Patent number: 10378085
    Abstract: A method is provided for recovering scandium values from scandium-bearing ores. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to atmospheric pressure acid leaching with sulfuric acid, thereby producing a first, scandium-bearing solution containing ferric (Fe3+) ions; subjecting the first solution to hydrothermal processing, thereby precipitating from the first solution a material selected from the group consisting of hematite and basic iron sulfates and generating a second, scandium-bearing solution; and recovering scandium values from the second solution.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: August 13, 2019
    Assignee: Scandium International Mining Corp.
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20190161827
    Abstract: A method is provided for extracting scandium values from an ore feedstock. The method includes providing a feedstock of a copper ore which contains scandium values; extracting scandium values from the ore with a leaching solution, thereby obtaining a pregnant leachate; contacting the pregnant leachate with an ion exchange resin, thereby extracting scandium values from the pregnant leachate and forming a loaded extractant; stripping the scandium values from the loaded extractant with a stripping solution, thereby forming a loaded stripping solution; and precipitating the scandium values from the loaded stripping solution as a scandium-containing precipitate.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 10260127
    Abstract: A method for isolating scandium values is provided. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to an acid leaching process, thereby obtaining a leachate, wherein the pH of the leachate is less than 1.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: April 16, 2019
    Assignee: Scandium International Mining Corporation
    Inventor: Willem P. C. Duyvesteyn
  • Publication number: 20180312940
    Abstract: A method for isolating scandium values is provided. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to an acid leaching process, thereby obtaining a leachate, wherein the pH of the leachate is less than 1.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 1, 2018
    Applicant: Scandium International Mining Corp.
    Inventor: Willem P.C. Duyvesteyn
  • Publication number: 20180282840
    Abstract: A method is provided for recovering scandium values from scandium-bearing ores. The method includes providing a scandium-bearing ore; subjecting the scandium-bearing ore to atmospheric pressure acid leaching with sulfuric acid, thereby producing a first, scandium-bearing solution containing ferric (Fe3+) ions; subjecting the first solution to hydrothermal processing, thereby precipitating from the first solution a material selected from the group consisting of hematite and basic iron sulfates and generating a second, scandium-bearing solution; and recovering scandium values from the second solution.
    Type: Application
    Filed: May 9, 2018
    Publication date: October 4, 2018
    Inventor: Willem P.C. Duyvesteyn
  • Patent number: 9982325
    Abstract: Methods are provided for the recovery of scandium from scandium-bearing ores. The methods included leaching under atmospheric conditions using various acids. Solution impurities are removed from the leachate and scandium values are then recovered from the leachate.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: May 29, 2018
    Assignee: Scandium International Mining Corp.
    Inventor: Willem P. C. Duyvesteyn