Patents by Inventor Hossein K. Sepehri-Nik

Hossein K. Sepehri-Nik 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).

  • Method and apparatus for beneficiating phosphate ores
    Patent number: 4324577
    Abstract: Method and apparatus for producing high grade phosphate rock from low grades, slime or tailings by subjecting the low grade rock, slime or tailings to a calcination treatment at a temperature within the range from 1000.degree. F. to 1600.degree. F., and preferably from 1400.degree. F. to 1600.degree. F., until a fraction of said rock, slime or tailings becomes magnetically attractable, and subjecting the treated material to a high strength magnetic field to separate the same magnetically into at least two fractions, one of increased BPL and one of decreased BPL.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: April 13, 1982
    Assignee: Beker Industries, Inc.
    Inventor: Hossein K. Sepehri-Nik