Patents by Inventor Qiugu HE

Qiugu HE 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 extracting germanium based on acid decomposition
    Patent number: 12258651
    Abstract: A method for extracting germanium based on acid decomposition is provided, including acid decomposition and post-treatment steps, and specifically including: adding an acid to a coal ash for conditioning to obtain a material a; heating the material a to 350° C. to 800° C., and keeping the material a at this temperature for 10 min to 10 h to obtain an acid-decomposed material b; milling the acid-decomposed material b until more than 60% of a milled material has a particle size of less than 200 mesh to obtain a material c; subjecting the material c to distillation to obtain a residual slurry d and a distillation fraction e; and hydrolyzing the distillation fraction e with a dilute hydrochloric acid solution, and then oven-drying to obtain GeO2.
    Type: Grant
    Filed: September 27, 2024
    Date of Patent: March 25, 2025
    Assignee: KUNMING METALLURGICAL RESEARCH INSTITUTE CO., LTD.
    Inventors: Xiaocai He, Huixian Shi, Jiuyang Ren, Na Xu, Ye Yuan, Qingxin Xu, Yina Li, Qiugu He, Ting Ren, Yuan Xu, Weizhi Diao, Sen Yan, Hui Zhang
  • METHOD FOR EXTRACTING GERMANIUM BASED ON ACID DECOMPOSITION
    Publication number: 20250019795
    Abstract: A method for extracting germanium based on acid decomposition is provided, including acid decomposition and post-treatment steps, and specifically including: adding an acid to a coal ash for conditioning to obtain a material a; heating the material a to 350° C. to 800° C., and keeping the material a at this temperature for 10 min to 10 h to obtain an acid-decomposed material b; milling the acid-decomposed material b until more than 60% of a milled material has a particle size of less than 200 mesh to obtain a material c; subjecting the material c to distillation to obtain a residual slurry d and a distillation fraction e; and hydrolyzing the distillation fraction e with a dilute hydrochloric acid solution, and then oven-drying to obtain GeO2.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Applicant: KUNMING METALLURGICAL RESEARCH INSTITUTE CO., LTD.
    Inventors: Xiaocai HE, Huixian SHI, Jiuyang REN, Na XU, Ye YUAN, Qingxin XU, Yina LI, Qiugu HE, Ting REN, Yuan XU, Weizhi DIAO, Sen YAN, Hui ZHANG