Mixed Prior To Charging Patents (Class 75/481)
  • Patent number: 8545593
    Abstract: A method for producing liquid ferroalloy by direct processing of manganese and chromium bearing iron compounds, by the steps: of mixing carbonaceous reductant, fluxing agent, and a binder with materials such as iron sands, metallic oxides, manganese-iron ore concentrates and/or chromium-iron ore concentrates and silica sands, to form a mixture; forming agglomerates from the mixture; feeding the agglomerates to a melting furnace with other materials; melting the feed materials at a temperature of from 1500 to 1760° C. and forming a slag and hot metal; removing the slag; tapping the hot metal as liquid ferroalloy, and utilizing the off-gases from the melting furnace as combustion fuel to drive a turbine and to generate electricity.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: October 1, 2013
    Assignee: Cardero Resource Corporation
    Inventor: Glenn E. Hoffman
  • Patent number: 8202345
    Abstract: A method for producing a substantially metallic iron-containing product from iron oxide. The metallic iron produced according to the invention is non-pyrophoric and may be safely shipped and handled without additional process steps. The method of the invention is simple, economical, and produces high quality metallic product which may be used as a feed for Electric Arc Furnace (EAF), Blast Furnaces and Cupolas among other applications.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: June 19, 2012
    Assignee: Premier Enviro Services, Inc.
    Inventors: James L. Coburn, John L. Sullivan
  • Patent number: 6451085
    Abstract: In the production of reduced iron by agglomerating a mixed powder of an iron material and a reducing agent to form compacts like briquettes or pellets, and reducing the compacts in a high temperature atmosphere, when the temperature of reduced compacts is 900° C. or higher, the oxide content in the reduced compacts is set at 11% or more, and the basicity of the reduced compacts is set at 0.5 or higher.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: September 17, 2002
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Susumu Kamikawa, Kouichi Hirata, Hironori Fujioka, Hideaki Mizuki, Keiichi Sato