Patents by Inventor Janos Szolnoki

Janos Szolnoki 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).

  • Process for the selective separation of the bound sodium content of red mud
    Patent number: 4133866
    Abstract: The invention relates to a novel process for the selective recovery of the sodium content of red mud originating from alumina plants. According to the process of the invention red mud or a slurry thereof is admixed with a ferric sulfate solution, the resulting suspension is stirred intensively for 0.5 to 1 hour at 15 to 85.degree. C, thereafter, if necessary, the pH of the suspension is adjusted to 4.4 to 4.6 and the solid substance is removed from the suspension.Using the process of the invention the sodium oxide content of red mud can be reduced to below 1.5%.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: January 9, 1979
    Assignees: Aluminiumipari Tervezo es Kutato Intezet, Almasfuzitoi Timfoldgyar, MTA Geokemiai Kutatolaboratorium
    Inventors: Tamas Lakatos, Mihaly Miskei, Janos Szolnoki, Ferenc Toth, Laszlo Revesz