Direct reduced iron discharge system and method
AssigneeMidrex International B.V. Rotterdam, Zurich Branch
InventorsStephen Craig Montague, Brian William Voelker
Life of this patent
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Abstract
A method and apparatus for simultaneously supplying varying proportions of hot and cold direct reduced iron(DRI) material from a source of hot DRI for melting, storage, briquetting, or transport. The system uses gravity to transport hot DRI material from a reduction furnace to a furnace discharge section, which transports desired amounts to a cooling receptacle and to a hot DRI vessel. The cooling section of the apparatus is connected to the furnace discharge section through a dynamic seal leg. The hot section is also connected to the furnace discharge section through separate a dynamic sealing leg and can feed a surge vessel, a briquetter, a storage vessel or a melting furnace. The method of operation is also disclosed.
Claims10
Apparatus for the simultaneous discharge of particulate hot direct reduced iron (DRI) and particulate cold DRI from a continuous supply of hot DRI, comprising:
- a furnace discharge section for receiving and discharging hot DRI, a first discharge conduit and a second discharge conduit connected to said discharge section;
- a particle cooler, said first discharge conduit communicating with said particle cooler;
- a vessel for receiving hot particulates, said second discharge conduit communicating with said vessel.
A method for the simultaneous discharge of hot direct reduced iron (DRI) material and cold DRI material from a continuous supply of hot DRI, comprising:
- providing a continuous supply of hot DRI;
- gravitationally conveying a first portion of said hot DRI hermetically through a first seal leg to a hot DRI receiving vessel;
- gravitationally conveying a second portion of said hot DRI hermetically to a hot DRI cooling vessel and forming cooled DRI product;
- discharging said cooled DRI product;
- and
- discharging said hot DRI from said vessel for transport, briquetting, or melting.
Dependencies are inferred from the claim text.