Method and apparatus for handling off-gases from metal refining

Details Method and apparatus for handling off-gases from metal refining Method and apparatus for handling off-gases from metal refining

1975-03-31

1977-09-27

Lake, Roy

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

Hood

266157, 55226, C21C 540

Patent

active

040506827

ABSTRACT:
The mouth of a metal refining vessel has a primary gas collection hood supported over it. A duct couples the hood to a gas cleaning quencher which is serially connected by a duct to a wet scrubber. A fan draws gases and suspended particulates through the system and discharges the effluent from the scrubber to a stack which burns the gas in the atmosphere. A secondary gas collection hood is supported over the first hood. The secondary hood has a duct which connects into the gas cleaning system intermediate the quencher and the scrubber. A bell damper connects the duct from the secondary hood into the intermediate duct. When the vessel is tilted away from the primary hood, the damper is opened so that gases escaping from the mouth of the vessel may be captured by the secondary hood and passed through the gas cleaning system. The secondary hood has a chain curtain which yields to allow a ladle or scrap charging box to swing over the vessel mouth when it is tilted.

REFERENCES:
patent: 3558116 (1971-01-01), Yagi et al.
patent: 3726065 (1973-04-01), Hausberg et al.
patent: 3743264 (1973-07-01), Baum et al.
patent: 3844745 (1974-10-01), Hausberg et al.
patent: 3863906 (1975-02-01), Vicard
patent: 3908969 (1975-09-01), Baum et al.

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