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US 6,585,929 B1Granted
Direct smelting vessel
AssigneeTechnological Resources Pty. Limited
InventorsCecil Peter Bates, Peter Damian Burke, Rodney James Dry
Life of this patent
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Abstract
A direct smelting vessel which is adapted to contain a molten bath of metal and slag is disclosed. The vessel includes an off-gas duct that has: (a) a first section which has a relatively slight upward inclination to the horizontal from an inlet end of the first section; and (b) a second section which extends upwardly from an upper end of the first section at a relatively steep inclination to the horizontal.
Claims17
A direct smelting vessel which is adapted to contain a molten bath of metal and slag and includes:
- a hearth;
- side walls that extend upwardly from the hearth;
- a roof;
- an off-gas chamber that extends upwardly from the roof, the off-gas chamber having an upwardly extending side wall;
- and an off-gas duct extending from the side wall of the off-gas chamber for discharging from the vessel an off-gas that is produced during a direct smelting process operated in the vessel, said off-gas duct includes:
- (a) a first section which has an off-gas inlet positioned in an upper section of the vessel so that off-gas is forced to undergo a substantial change of direction to enter the first section, the first section having an upward inclination of greater than 0° and less than 30° to the horizontal;
- and
- (b) a second section which extends upwardly from an upper end of the first section at a relatively steep inclination to the horizontal whereby in use off-gas flowing through the duct undergoes a substantial change of direction on flowing from the first section into the second section.
5 more elements
Dependencies are inferred from the claim text.