Abstract: The present invention refers to an equipment for feeding and distributing charge and fuel in furnaces of rectangular cross section, comprising movable feeding tubes to distribute along the longitudinal section and the cross section of the furnace, both a charge comprised of self-reducing agglomerates, ore, scrap or any other metallic material, and solid fuels of any kind.
Type:
Grant
Filed:
June 28, 2001
Date of Patent:
October 5, 2004
Assignee:
Startec Iron LLC
Inventors:
Marcos de Albuquerque Contrucci, Pedro Henrique Carpinetti Costa
Abstract: The present invention refers to a method and an equipment for curing and drying self-reducing agglomerates containing cement as a binder in the presence of saturated vapor at a temperature from about 70 to about 110° C. and under atmospheric pressure. The treatment is performed in one single equipment.
Type:
Grant
Filed:
March 20, 2001
Date of Patent:
May 20, 2003
Assignee:
Startec Iron LLC
Inventors:
Marcos de Albuquerque Contrucci, Edmar Saul Marcheze
Abstract: A method for reducing metal oxides in a shaft furnace. A charge of metal oxide and a reductant is reacted in the furnace to produce a primary metal of the metal oxide and an additional secondary metal. The temperature of the off gas from the reaction is controlled to prevent condensing of the secondary metal so that it remains in the off gas for separation therefrom.
Type:
Grant
Filed:
March 20, 2001
Date of Patent:
February 11, 2003
Assignee:
Startec Iron LLC
Inventors:
Marcos de Albuquerque Contrucci, Pedro Henrique Carpinetti Costa, Edmar Saul Marcheze
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