Patents by Inventor Huiwei Yue

Huiwei Yue 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 producing calcium zincate
    Patent number: 11247913
    Abstract: Provided is a method for producing calcium zincate. The method comprises: an extraction step: mixing a ground zinc-containing raw material with an extracting agent, followed by filtration to obtain an extract, wherein the extracting agent is a mixed aqueous solution of ammonia and {NH4HCO3 and/or (NH4)2CO3; optionally, purifying the extract; a decarburization step: adding calcium oxide and/or calcium hydroxide to the extract, stirring, and filtering to obtain a first solid and a first filtrate; a calcium zincate synthesis step: adding calcium hydroxide and/or calcium oxide to the first filtrate, stirring to react, and filtering to obtain a second solid and a second filtrate; optionally, rinsing the second solid with water; a drying step: drying the second solid to obtain the final calcium zincate product.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: February 15, 2022
    Assignee: CHONGQING DONGQUN TECHNOLOGY CO., LTD.
    Inventors: Huiwei Yue, Shichuan Li, Zhongxiang Long, Tao Jiang, Quanfeng Liu
  • Method for Producing Calcium Zincate
    Publication number: 20210130184
    Abstract: Provided is a method for producing calcium zincate. The method comprises: an extraction step: mixing a ground zinc-containing raw material with an extracting agent, followed by filtration to obtain an extract, wherein the extracting agent is a mixed aqueous solution of ammonia and {NH4HCO3 and/or (NH4)2CO3; optionally, purifying the extract; a decarburization step: adding calcium oxide and/or calcium hydroxide to the extract, stirring, and filtering to obtain a first solid and a first filtrate; a calcium zincate synthesis step: adding calcium hydroxide and/or calcium oxide to the first filtrate, stirring to react, and filtering to obtain a second solid and a second filtrate; optionally, rinsing the second solid with water; a drying step: drying the second solid to obtain the final calcium zincate product.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 6, 2021
    Inventors: Huiwei Yue, Shichuan Li, Zhongxiang Long, Tao Jiang, Quanfeng Liu