Equipment for distribution and feeding of charge and fuel in shaft furnaces of rectangular cross section
AssigneeStartec Iron LLC
InventorsMarcos de Albuquerque Contrucci, Pedro Henrique Carpinetti Costa
Life of this patent
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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.
Claims14
An apparatus for introducing and distributing solid fuel and a charge including a metal oxide, to a shaft furnace having a rectangular interior cross-section for the production of molten metal from said metal oxide, said apparatus comprising:
- a fuel distributor for distributing solid fuel into said furnace;
- a charge distributor disposed on opposite sides of said fuel distributor for distributing charge into the furnace;
- said fuel distributor distributing solid fuel into said furnace in a central region thereof to form a longitudinal, central column of solid fuel in said furnace;
- each said charge distributor including a respective tube journaled for movement in two planes perpendicular to one another, one longitudinally of the furnace, the other crosswise to the furnace, for distributing the charge on opposite sides of the solid fuel to form longitudinal columns of said charge on opposite sides of the central column of solid fuel thereby to maximize exchange of heat between ascending hot gas and said charge within said interior cross-section of said shaft furnace.
A method for distributing solid fuel and a charge including a metal oxide in a shaft furnace having a rectangular interior cross-section, the charge being used for the production of molten metal from the metal oxide of the charge, said method comprising:
- distributing solid fuel in a central region in said furnace to form a longitudinal central column of solid fuel in said furnace;
- distributing charge on opposite sides of the solid fuel by moving distributing tubes for the charge in two planes perpendicular to one another, one lengthwise of the furnace, the other crosswise of the furnace, on opposite sides of the solid fuel to form longitudinal columns of said charge on opposite sides of the central column of solid fuel thereby to maximize exchange of heat between ascending hot gas and said charge;
- and
- continuing said distributing of said charge and said solid fuel to maintain said central column of solid fuel and charge column on opposite sides of said central column during said production of said molten metal.
Dependencies are inferred from the claim text.