Patents by Inventor Eri TAKIDA

Eri TAKIDA 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).

  • MINERAL PROCESSING METHOD
    Publication number: 20240327947
    Abstract: Provided is a mineral processing method that allows obtaining a concentrate having a low arsenic grade from a raw material having a high arsenic grade.
    Type: Application
    Filed: June 10, 2024
    Publication date: October 3, 2024
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SUMITOMO METAL MINING CO., LTD.
    Inventors: Tsuyoshi HIRAJIMA, Hajime MIKI, Gde Pandhe Wisnu SUYANTARA, Keiko SASAKI, Yoshiyuki TANAKA, Eri TAKIDA
  • Mineral processing method
    Patent number: 11697862
    Abstract: A mineral processing method capable of efficiently separating a copper mineral from a molybdenum mineral is provided. The mineral processing method includes: a conditioning step of adding sulfite as a surface treatment agent to a mineral slurry containing a copper mineral and a molybdenum mineral; and a flotation step of performing flotation using the mineral slurry after the conditioning step. The hydrophilicity of the copper mineral can be selectively enhanced by sulfite, so as to be able to produce a difference in hydrophilicity between the copper mineral and the molybdenum mineral. Therefore, the molybdenum mineral can be selectively caused to float, and the copper mineral and the molybdenum mineral can be efficiently separated from each other.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: July 11, 2023
    Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SUMITOMO METAL MINING CO., LTD.
    Inventors: Tsuyoshi Hirajima, Hajime Miki, Gde Pandhe Wisnu Suyantara, Yuji Imaizumi, Yuji Aoki, Eri Takida
  • MINERAL PROCESSING METHOD
    Publication number: 20190360072
    Abstract: A mineral processing method capable of efficiently separating a copper mineral from a molybdenum mineral is provided. The mineral processing method includes: a conditioning step of adding sulfite as a surface treatment agent to a mineral slurry containing a copper mineral and a molybdenum mineral; and a flotation step of performing flotation using the mineral slurry after the conditioning step. The hydrophilicity of the copper mineral can be selectively enhanced by sulfite, so as to be able to produce a difference in hydrophilicity between the copper mineral and the molybdenum mineral. Therefore, the molybdenum mineral can be selectively caused to float, and the copper mineral and the molybdenum mineral can be efficiently separated from each other.
    Type: Application
    Filed: June 1, 2018
    Publication date: November 28, 2019
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, SUMITOMO METAL MINING CO., LTD.
    Inventors: Tsuyoshi HIRAJIMA, Hajime MIKI, Gde Pandhe Wisnu SUYANTARA, Yuji IMAIZUMI, Yuji AOKI, Eri TAKIDA