Patents by Inventor XIAOFEN WEI

XIAOFEN WEI 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 preparing active calcium silicate
    Patent number: 10017421
    Abstract: The present invention provides a method for preparing an active calcium silicate. The method comprises: mixing a lime milk, a fly ash desilicated liquid and a particle diameter control agent and reacting them, to obtain a active calcium silicate slurry. The particle diameter control agent is one of a pyrophosphoric acid salt, a metaphosphoric acid salt, a polyphosphoric acid salt, a polyacrylic acid ester, and a polyacrylic acid salt. The preparation method of the present invention can efficiently reduce large particles of the active calcium silicate, so as to reduce the influence of the large particles on papermaking process and paper quality.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: July 10, 2018
    Assignee: DATANG INTERNATIONAL HIGH ALUMINA COAL R & D CENTER
    Inventors: Junmin Sun, Chenghai Wang, Zhanjun Zhang, Yang Chen, Zhijun Gao, Xiaofen Wei, Peng Xu
  • METHOD FOR PREPARING ACTIVE CALCIUM SILICATE
    Publication number: 20160176761
    Abstract: The present invention provides a method for preparing an active calcium silicate. The method comprises: mixing a lime milk, a fly ash desilicated liquid and a particle diameter control agent and reacting them, to obtain a active calcium silicate slurry. The particle diameter control agent is one of a pyrophosphoric acid salt, a metaphosphoric acid salt, a polyphosphoric acid salt, a polyacrylic acid ester, and a polyacrylic acid salt. The preparation method of the present invention can efficiently reduce large particles of the active calcium silicate, so as to reduce the influence of the large particles on papermaking process and paper quality.
    Type: Application
    Filed: March 2, 2016
    Publication date: June 23, 2016
    Inventors: JUNMIN SUN, CHENGHAI WANG, ZHANJUN ZHANG, YANG CHEN, ZHIJUN GAO, XIAOFEN WEI, PENG XU