Patents by Inventor Zongiiang Zhang

Zongiiang Zhang 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).

  • Covering flux for smelting aluminum and a process for its preparation
    Patent number: 5762722
    Abstract: The present invention relates to a highly efficient aluminum covering flux and a process for its preparation. The said covering flux comprises potassium chloride, sodium chloride, lithium chloride, potassium fluoride and sodium hydrosulfate, wherein the composition of the mentioned covering flux is: potassium chloride, 20-65 parts by weight; sodium chloride, 20-65 parts by weight; lithium chloride, 1-20 parts by weight; potassium fluoride, 0.3-5 parts by weight, sodium hydrosulfate, 0.2-3 parts by weight. The said covering flux can effectively prevent the oxidization of aluminum in the process of smelting aluminum and can increase the yield of aluminum.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: June 9, 1998
    Inventor: Zongiiang Zhang