Patents Assigned to PYROTEK HIGH-TEMPERATURE INDUSTRIAL PRODUCTS INC.
  • Patent number: 12091365
    Abstract: A method of making a refractory article is provided. The method includes: a) mixing a binder system, a refractory charge, and a second colloidal binder to form an aqueous slurry; b) casting the aqueous slurry into a mold; c) subjecting the mold containing the aqueous slurry to a temperature that is lower than a slurry casting temperature for a time sufficient to form a green strength article; and d) firing the green strength article at a temperature of at least 450° C. for a time sufficient to achieve thermal homogeneity, thereby forming a refractory article. Refractory articles made in accordance with the method have a unique combination of pore structure and mechanical properties.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: September 17, 2024
    Assignee: PYROTEK HIGH TEMPERATURE INDUSTRIAL PRODUCTS INC.
    Inventors: Marcel Gouin, François Veillette, Alain Simard
  • Patent number: 11692101
    Abstract: A coating composition and a method of making a coating composition is provided. The coating composition includes: a) a binder system comprising a mixture of a caramelized carbohydrate component, an inorganic colloidal binder, and an adjuvant; and b) a protective agent. The coating composition is useful for protecting articles from corrosion and/or erosion caused by contact with molten metal.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: July 4, 2023
    Assignee: Pyrotek High Temperature Industrial Products Inc.
    Inventors: Marcel Gouin, François Veillette, Alain Simard
  • Patent number: 11299432
    Abstract: A method of making a refractory article is provided. The method includes: a) mixing a binder system, a refractory charge, and a second colloidal binder to form an aqueous slurry; b) casting the aqueous slurry into a mold; c) subjecting the mold containing the aqueous slurry to a temperature that is lower than a slurry casting temperature for a time sufficient to form a green strength article; and d) firing the green strength article at a temperature of at least 450° C. for a time sufficient to achieve thermal homogeneity, thereby forming a refractory article. Refractory articles made in accordance with the method have a unique combination of pore structure and mechanical properties.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: April 12, 2022
    Assignee: PYROTEK HIGH TEMPERATURE INDUSTRIAL PRODUCTS INC.
    Inventors: Marcel Gouin, François Veillette, Alain Simard
  • Patent number: 9993870
    Abstract: A control pin for controlling the flow of molten metal through a down spout in a casting process is provided. The control pin comprises a body having an elongated shape, a lower portion insertable in the down spout, and a terminal end, opposite the lower portion. The body includes a central core, preferably a hollow tube or a rod of alumina or mullite; a heating element disposed around the central core, and an intermediate layer surrounding the central core and encasing the heating element, the intermediate layer being made of a solidified ceramic putty. Finally, an outer shell, preferably made of woven fiber reinforcing fabric in a matrix of ceramic, surrounds the intermediate layer.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: June 12, 2018
    Assignee: PYROTEK HIGH-TEMPERATURE INDUSTRIAL PRODUCTS INC.
    Inventors: Sylvain Tremblay, Jens Bouchard, Michael Bouchard