Patents Assigned to Minerals Technologies Inc.
  • Patent number: 8544772
    Abstract: A method of recovering a mineral product from carpet by preparing a feed of carpet pieces; thermally separating organic components from mineral components in the carpet by heating the carpet pieces to a particle bed temperature in the range of 600° C. to 1000° C., wherein the mineral component is oxidized to form a mineral oxide; slurrying the mineral oxide with water to produce 15 to 35% solids slurry within a period of approximately 30 minutes to 24 hours, whereby the mineral oxide forms a mineral hydroxide; stabilizing the pH of the slurry in the range between 6 and 10 by carbonation, resulting in a slurry containing mineral carbonates.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: October 1, 2013
    Assignee: Ginn Mineral Technology, Inc.
    Inventor: Michael W. Ginn
  • Publication number: 20120298010
    Abstract: A method of recovering a mineral product from carpet by preparing a feed of carpet pieces; thermally separating organic components from mineral components in the carpet by heating the carpet pieces to a particle bed temperature in the range of 600° C. to 1000° C., wherein the mineral component is oxidized to form a mineral oxide; slurrying the mineral oxide with water to produce 15 to 35% solids slurry within a period of approximately 30 minutes to 24 hours, whereby the mineral oxide forms a mineral hydroxide; stabilizing the pH of the slurry in the range between 6 and 10 by carbonation, resulting in a slurry containing mineral carbonates.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: Ginn Mineral Technology, Inc.
    Inventor: Michael W. Ginn
  • Patent number: 7387769
    Abstract: A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in one or more of the stations or chambers as the liquid moves through the tank or reactor.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: June 17, 2008
    Assignee: Minerals Technologies Inc.
    Inventor: Gerald Dean Erdman
  • Patent number: 7150839
    Abstract: Composition comprising a fluorescent material comprising the mixture of one or more metal salts selected from the group consisting of metal oxides and metal hydroxides; one or more carbohydrate(s) selected from the group consisting of sugar and starch; and one or more organic acid(s), method of preparation comprising mixing the components in the presence of water and then drying, and use of the fluorescent material in paper, plastic, polymer, resin, and paint. The resultant papers, plastics, polymers, resins, and paint have whiteness and brightness due to the fluorescence.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: December 19, 2006
    Assignee: Minerals Technologies Inc.
    Inventors: Robin L. Saulsbery, Matthew Frederick Slozer
  • Patent number: 7033428
    Abstract: The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak acid, a chelating agent, a weak acid capable of chelating calcium ion, or a mixture thereof. The acid-stabilizer is present in an amount sufficient to provide an aqueous calcium carbonate slurry having an increased calcium ion concentration and an acidic pH. In a typical acid-stabilized calcium carbonate slurry of the invention, the acid-stabilizer is present in an amount sufficient to provide a calcium ion concentration of about 1 millimolar to about 5 molar, preferably from about 1 to about 120 millimolar.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: April 25, 2006
    Assignee: Minerals Technologies Inc.
    Inventor: Donald Kendall Drummond
  • Publication number: 20040087682
    Abstract: The present invention relates to a product, a process for its preparation and the use of such in plastic film production. More specifically, the present invention relates to an antiblock talc, a process for the preparation of such and its use as an additive in the production of polyolefin film.
    Type: Application
    Filed: June 25, 2003
    Publication date: May 6, 2004
    Applicant: Minerals Technologies Inc.
    Inventor: Donald Kendall Drummond
  • Patent number: 6613856
    Abstract: Novel polymers are provided having phosphonated and sulphonated substituent groups such that the polymer is multifunctional in its use. Optional amide substituents are used to reduce electrostatic charge density or for hydrogen bonding. An advantage of the polymer is the flexibility of using it for multiple purposes. A particular application is for bonding paper fillers and paper fiber together.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: September 2, 2003
    Assignee: Minerals Technologies Inc.
    Inventors: Donald Kendall Drummond, Patrick Clinton Wernett
  • Patent number: 6602385
    Abstract: A method of improving the brightness of calcium carbonate filled paper. The filled paper is dried and then bleached with an aqueous solution of a bleaching agent. The process may be used on all grades of paper that contain filler and is particularly useful in the bleaching of low brightness grade papers that are produced from mechanical pulp that contain calcium carbonate.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: August 5, 2003
    Assignee: Minerals Technologies Inc.
    Inventor: Donald Kendall Drummond
  • Patent number: 6593400
    Abstract: The present invention relates to a product, a process for its preparation and the use of such in plastic film production. More specifically, the present invention relates to an antiblock talc, a process for the preparation of such and its use as an additive in the production of polyolefin film. Polyolefin films produced according to the process of the present invention are useful in a broad range of packaging and film covering applications.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: July 15, 2003
    Assignee: Minerals Technologies Inc.
    Inventor: Donald Kendall Drummond
  • Patent number: 6508857
    Abstract: A cored wire consisting of an inner calcium wire surrounded by an aluminum sheath forming a composite core which in turn is encased in a steel jacket. The cored wire is formed continuously by covering an extruded calcium wire with aluminum then inserting the aluminum covered calcium wire into a steel jacket in a roll forming process. Also disclosed is a method of reducing splashing when introducing calcium metal into a molten ferrous metal bath.
    Type: Grant
    Filed: January 17, 2002
    Date of Patent: January 21, 2003
    Assignee: Minerals Technologies Inc.
    Inventors: Phillip Ronald King, Richard Shaddinger Baum
  • Publication number: 20020176813
    Abstract: A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in one or more of the stations or chambers as the liquid moves through the tank or reactor.
    Type: Application
    Filed: May 8, 2002
    Publication date: November 28, 2002
    Applicant: Minerals Technologies Inc.
    Inventor: Gerald Dean Erdman
  • Publication number: 20020148582
    Abstract: The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble calcium salt, a weak acid, a chelating agent, a weak acid capable of chelating calcium ion, or a mixture thereof. The acid-stabilizer is present in an amount sufficient to provide an aqueous calcium carbonate slurry having an increased calcium ion concentration and an acidic pH. In a typical acid-stabilized calcium carbonate slurry of the invention, the acid-stabilizer is present in an amount sufficient to provide a calcium ion concentration of about 1 millimolar to about 5 molar, preferably from about 1 to about 120 millimolar.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 17, 2002
    Applicant: Minerals Technologies Inc.
    Inventor: Donald Kendall Drummond
  • Patent number: 6454907
    Abstract: Method and apparatus for concentrating slurries by removing liquid in a single effect unit maintained under vacuum to effect low temperature flashing of the liquid. The single effect unit is a single flash column with separate recirculation loops, one to preheat incoming slurry for concentration and a separate loop for withdrawal of concentrated slurry Vapor from the flash column can be treated to separate liquid from other components in the vapor.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: September 24, 2002
    Assignee: Minerals Technologies, Inc.
    Inventor: Gerald Dean Erdman
  • Patent number: 6451268
    Abstract: A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in one or more of the stations or chambers as the liquid moves through the tank or reactor.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: September 17, 2002
    Assignee: Minerals Technologies Inc.
    Inventor: Gerald Dean Erdman
  • Patent number: 6420289
    Abstract: A synthetic silicate pellet is provided having component of calcium and magnesium, either together or in the alternative. Such pellet is further provided with either an aluminate silicate binder and/or an ion flow catalyst. The synthetic silicate pellet has use as a glass batch component.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: July 16, 2002
    Assignee: Minerals Technologies Inc.
    Inventors: Gary Peter Tomaino, John Albert Hockman
  • Publication number: 20020053258
    Abstract: A cored wire consisting of an inner calcium wire surrounded by an aluminum sheath forming a composite core which in turn is encased in a steel jacket. The cored wire is formed continuously by covering an extruded calcium wire with aluminum then inserting the aluminum covered calcium wire into a steel jacket in a roll forming process. Also disclosed is a method of reducing splashing when introducing calcium metal into a molten ferrous metal bath.
    Type: Application
    Filed: January 17, 2002
    Publication date: May 9, 2002
    Applicant: Minerals Technologies Inc.
    Inventors: Phillip Ronald King, Richard Shaddinger Baum
  • Patent number: 6346135
    Abstract: A cored wire consisting of an inner calcium wire surrounded by an aluminum sheath forming a composite core which in turn is encased in a steel jacket. The cored wire is formed continuously by covering an extruded calcium wire with aluminum then inserting the aluminum covered calcium wire into a steel jacket in a roll forming process. Also disclosed is a method of reducing splashing when introducing calcium metal into a molten ferrous metal bath.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: February 12, 2002
    Assignee: Minerals Technologies Inc.
    Inventors: Phillip Ronald King, Richard Shaddinger Baum
  • Patent number: 6336346
    Abstract: A synthetic silicate pellet is provided having a component(s) of calcium and magnesium, either together or in the alternative. Such pellet is further provided with either an aluminate silicate binder and/or an ion flow catalyst. The synthetic silicate pellet has use as a glass batch component.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: January 8, 2002
    Assignee: Minerals Technologies Inc.
    Inventors: Gary Peter Tomaino, John Albert Hockman
  • Patent number: 6294143
    Abstract: A product and a process for the preparation of discrete calcium carbonate particles that result from preparing an aqueous calcium carbonate slurry containing carbohydrates, carbonating the aqueous calcium carbonate slurry while maintaining the selected starting carbonation temperature. The product of the present invention is discrete particles of calcium carbonate which are especially useful in paints, plastics, paper coating, paper filling, and because of the purity level of the calcium carbonate particle may be used in cosmetics, pharmaceuticals and food applications.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: September 25, 2001
    Assignee: Minerals Technologies Inc.
    Inventors: Donald Richard Deutsch, Kenneth James Wise
  • Patent number: 6287997
    Abstract: A method is disclosed of producing a synthetic silicate. The method is advantageous in providing material useful in glass making. Such method involves the reaction of calcium oxides and magnesium oxides, water and sodium silicates. The glass formation is performed at a lower temperature than usual and performed with a lower amount of volatile gas release. Less cristobalite formation in the glass occurs. The synthetic silicate produced can be a cylindrical pellet.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: September 11, 2001
    Assignee: Minerals Technologies Inc.
    Inventors: George Henry Fairchild, John Albert Hockman