Patents by Inventor Richard G. Breuer

Richard G. Breuer 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).

  • Utilization of partially calcined alumina as precipitation aid in the Bayer process
    Patent number: 4568527
    Abstract: Finely divided alumina, recovered from the dust recovery systems of alumina hydrate calcination facilities, is employed as seed for the precipitation of alumina hydrate from pregnant Bayer process liquors. The finely divided alumina dust can either be used as seed in as-is condition, or, if desired, agglomerated to coarse and strong particles prior to use as seed. Agglomeration is accomplished by combining the dust in a predetermined weight ratio with alumina trihydrate seed under controlled conditions. The process allows the utilization of an otherwise undesirable and unacceptable by-product of alumina hydrate calcination.
    Type: Grant
    Filed: November 6, 1984
    Date of Patent: February 4, 1986
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Joseph L. Anjier, Richard G. Breuer, Harold L. Butler