Patents by Inventor Ruien Hou

Ruien Hou 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).

  • Method for treating fluorine-containing rare earth mineral particles
    Patent number: 11427884
    Abstract: A method for treating fluorine-containing rare earth mineral particles may include mixing a first batch of the fluorine-containing rare earth mineral particles with a first sulfuric acid solution in a weight ratio in the range of 2-10:1 of the sulfuric acid in the first sulfuric acid solution to the first batch of fluorine-containing rare earth mineral particles, and heating the mixture to cause a liquid-solid reaction. The solid phase and liquid phase may be separated after the reaction to obtain an acid filtrate and an acid residue. The acid residue may be leached with water to obtain an aqueous leaching liquor that comprises a rare earth sulfate and an aqueous leaching residue. A second sulfuric acid solution may be added to the acid filtrate in an amount such that the sulfuric acid concentration of the acid filtrate is 40-85 wt %.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 30, 2022
    Assignees: NATIONAL ENGINEERING RESEARCH CENTRE OF RUIKE RARE EARTH METALLURGY AND FUNCTION MATERIALS CO., LTD., BAOTOU RESEARCH INSTITUTE OF RARE EARTHS
    Inventors: Jianguo Cui, Zhe Wang, Ruien Hou, Dong Li, Meng Xu, Ting Gao, Xiaoli Hao, Bo Li, Yang Zhang
  • METHOD FOR TREATING FLUORINE-CONTAINING RARE EARTH MINERAL PARTICLES
    Publication number: 20210062295
    Abstract: A method for treating fluorine-containing rare earth mineral particles may include mixing a first batch of the fluorine-containing rare earth mineral particles with a first sulfuric acid solution in a weight ratio in the range of 2-10:1 of the sulfuric acid in the first sulfuric acid solution to the first batch of fluorine-containing rare earth mineral particles, and heating the mixture to cause a liquid-solid reaction. The solid phase and liquid phase may be separated after the reaction to obtain an acid filtrate and an acid residue. The acid residue may be leached with water to obtain an aqueous leaching liquor that comprises a rare earth sulfate and an aqueous leaching residue. A second sulfuric acid solution may be added to the acid filtrate in an amount such that the sulfuric acid concentration of the acid filtrate is 40-85 wt %.
    Type: Application
    Filed: June 21, 2019
    Publication date: March 4, 2021
    Applicants: BAOTOU RESEARCH INSTITUTE OF RARE EARTHS, NATIONAL ENGINEERING RESEARCH CENTRE OF RUIKE RARE EARTH METALLURGY AND FUNCTION MATERIALS CO., LTD.
    Inventors: Jianguo Cui, Zhe Wang, Ruien Hou, Dong Li, Meng Xu, Ting Gao, Xiaoli Hao, Bo Li, Yang Zhang