Patents by Inventor Yaru BIAN

Yaru BIAN 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 recovering lead oxide from waste lead paste
    Patent number: 10135100
    Abstract: A method for recovering lead oxide from a pre-desalted lead paste, comprising the following steps: a. dissolving the pre-desalted lead plaster by using a complexing agent solution, and making all of PbO therein react with the complexing agent to generate lead complexing ions, obtaining a lead-containing solution and a filter residue; b. adding a precipitant to the lead-containing solution, and then the precipitant reacting with the lead complexing ions to generate a lead salt precipitate and the regenerated complexing agent; c. calcining the lead salt precipitate to obtain lead oxide and regenerate the precipitant. The final recovery rate of lead oxide of the method can reach 99% or more.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: November 20, 2018
    Assignee: BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY
    Inventors: Junqing Pan, Yaru Bian, Yanzhi Sun, Yinjian Niu
  • METHOD FOR RECOVERING LEAD OXIDE FROM WASTE LEAD PASTE
    Publication number: 20170271725
    Abstract: A method for recovering lead oxide from a pre-desalted lead paste, comprising the following steps: a. dissolving the pre-desalted lead plaster by using a complexing agent solution, and making all of PbO therein react with the complexing agent to generate lead complexing ions, obtaining a lead-containing solution and a filter residue; b. adding a precipitant to the lead-containing solution, and then the precipitant reacting with the lead complexing ions to generate a lead salt precipitate and the regenerated complexing agent; c. calcining the lead salt precipitate to obtain lead oxide and regenerate the precipitant. The final recovery rate of lead oxide of the method can reach 99% or more.
    Type: Application
    Filed: June 10, 2015
    Publication date: September 21, 2017
    Inventors: Junqing PAN, Yaru BIAN, Yanzhi SUN, Yinjian NIU