Patents by Inventor Nace E. Halpin

Nace E. Halpin 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).

  • Salt recovery from aluminum black dross
    Patent number: 4569723
    Abstract: Sodium and potassium chloride consolidated granular salt crystals are formed on a bed of granular salt by spraying, for example, the clarified brine of aluminum black dross upon the heated bed. The bed cascades in a revolving drum and is maintained at a temperature of about 250.degree.-350.degree. F. (121.degree.-177.degree. C.). That is, the bed is maintained at a temperature high enough to evaporate the water from the brine before the brine penetrates the bed and low enough to eliminate entrainment of salt in the evaporated water. An apparatus and process for the recovery of this salt product are claimed.
    Type: Grant
    Filed: October 12, 1983
    Date of Patent: February 11, 1986
    Inventors: John P. Lyon, Nace E. Halpin