Patents by Inventor Guobang Zhu

Guobang Zhu 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).

  • Purification method of zinc sulfate leachate
    Patent number: 8545690
    Abstract: A purification method of zinc sulfate leachate is provided. The purification method of zinc sulfate leachate comprises contacting the zinc sulfate leachate with a zinc powder under a non-oxidizing atmosphere to form solution containing a precipitate of impurity metal; and removing the precipitate of impurity metal from the solution and getting a purified zinc sulfate leachate. A purified zinc sulfate leachate may be prepared with a higher purification efficiency and a lower energy consumption than prior art.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: October 1, 2013
    Assignees: Yunnan Metallurgical Group Co., Ltd., Yunnan Yongchang Pb&Zn Co., Ltd.
    Inventors: Jikun Wang, Ying Dong, Guangshen He, Changwu Zhou, Guobang Zhu, Jiancun Wu