Patents Assigned to Benilite Corporation of America
  • Beneficiation of ilmenite ore
    Patent number: 4019898
    Abstract: A small amount of sulfate ion is added to the hydrochloric acid leach liquor used to beneficiate ilmenite ore whereby fines or slime formation in the mother liquor is minimized or reduced and the color of the solid beneficiated ilmenite product is lighter.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: April 26, 1977
    Assignee: Benilite Corporation of America
    Inventors: James H. Chen, Lewis W. Huntoon
  • Pre-leaching or reduction treatment in the beneficiation of titaniferous iron ores
    Patent number: 3967954
    Abstract: The purity of titanium dioxide obtained by the acid leaching of a titaniferous iron ore, such as ilmenite, is improved by heating the ore prior to acid leaching with a reducing agent mixture of (a) a carbonaceous reducing agent and/or hydrogen and (b) sulfur to convert and lower the ferric oxide contaminant content of the ore to acid-soluble ferrous oxide and ferrous sulfide.
    Type: Grant
    Filed: September 10, 1974
    Date of Patent: July 6, 1976
    Assignee: Benilite Corporation of America
    Inventor: James H. Chen