Method of operating a rotary hearth furnace

Details Method of operating a rotary hearth furnace Method of operating a rotary hearth furnace

C - Chemistry, Metallurgy

22

B

C22B 5/10 (2006.01) F27D 25/00 (2010.01) C21B 11/06 (2006.01) C21B 13/10 (2006.01) F27B 9/16 (2006.01) F27B 9/12 (2006.01) F27B 9/36 (2006.01) F27B 9/38 (2006.01) F27D 3/00 (2006.01) F27D 3/08 (2006.01) F27D 9/00 (2006.01)

Patent

CA 2351969

To provide an operating method of a rotary hearth furnace for producing reduced iron in which a stuck substance stuck on the hearth surface is removed from the hearth surface to thereby prevent or reduce the wear of the knife edge of a screw of a discharge device, enabling continuous operation for a long period and capable of achieving high availability factor. The hearth surface is quenched by spraying or the like to genes ate cracks in the stuck substance on the hearth, and the stuck substance is scraped to thereby remove it from the hearth.

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