Patents by Inventor Arthur N. Baumann

Arthur N. Baumann 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).

  • Separation of dissolved substances from wet process phosphoric acid
    Patent number: 4640828
    Abstract: A process for separating and removing substantial amounts of magnesium and other ion impurities from wet process phosphoric acid of 35-45% P.sub.2 O.sub.5 content is provided. The process steps comprise: (a) heating the acid while maintaining the acid at a concentration of 35-45% P.sub.2 O.sub.5 by the addition of water for a time sufficient to effect removal of silicon as fluosilicic acid and/or silicon tetrafluoride, thereby forming a stripped acid; (b) precipitating ralstonite from the heated stripped acid; and (c) separating the precipitated ralstonite from the acid.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: February 3, 1987
    Assignee: International Minerals & Chemical Corp.
    Inventor: Arthur N. Baumann