Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1997-08-06
1999-11-23
Paschall, Mark H.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
432124, 75484, F27B 916
Patent
active
059890193
ABSTRACT:
In a rotary hearth furnace wherein objects including a mixture of a metal oxide, a reductant such as coal, and the like are fed onto the hearth, the fed objects are heated and reduced through the application of a flame of a burner provided on a ceiling portion or the upper portion of a side wall of the furnace, and the reduced objects are discharged from the furnace so as to be collected. The rotary hearth furnace has an air feeder for feeding air for secondary combustion at a position below the burner and in the vicinity of the hearth of the furnace for the purpose of burning a flammable gas generated from the objects. A flame of this secondary combustion accelerates the heating of the objects. Also, through a combined use of air for secondary combustion and excess air from the burner and an appropriate regulation of the ratio of therebetween, the objects are heated effectively.
REFERENCES:
patent: 3652426 (1972-03-01), Oleszko
patent: 3722867 (1973-03-01), Butler
patent: 4354828 (1982-10-01), Benton et al.
patent: 4462793 (1984-07-01), Maeda et al.
patent: 4622905 (1986-11-01), MacDougall et al.
patent: 4741694 (1988-05-01), Mason et al.
patent: 5019689 (1991-05-01), Bollier et al.
patent: 5102330 (1992-04-01), Ho
patent: 5186741 (1993-02-01), Kotraba et al.
patent: 5314170 (1994-05-01), Tada et al.
patent: 5730775 (1998-03-01), Meissner et al.
Nishimura Makoto
Suzuki Tomio
Kabushiki Kaisha Kobe Seiko Sho
Lu Jiping
Paschall Mark H.
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