Title: Shaft furnace

Abstract: A shaft reduction furnace is provided with a pressure equalizing chamber for supplying raw materials such as ores in the furnace. The interior of the furnace is separated by a dividing plate into an upper portion and a lower portion. A pipe path through the dividing plate communicates the upper portion with lower portion. The upper portion and the pipe path form an inside ore hopper for supplying ore continuously into the lower portion of the furnace, thus omitting the conventional ore hopper of pressure-proof-structure provided separately outside of the furnace.

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Inventors: Otsuki, Naoki (Himeji, JP)
Kobayashi, Katsuyoshi (Kitakyushu, JP)

Application Number: 886657
Filing Date: 1978-03-15
Publication_date: 1980-04-08
Assignee: Nippon Steel Corporation (Tokyo, JP)
Primary Class(es): 266/199 266/159, 266/176
Other Classes:
US Patent Ref:

1403283

Jan, 1922

Batchelor

266/176.

Other Refs:
Primary Examiner: Andrews, M. J.
Assistant Examiner:
Attorney: Toren, McGeady and Stanger