Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Liquid Flow in Blast Furnace Hearth Concentrated on Inner Packed Structure
Akihiko SHINOTAKEMorimasa ICHIDAHajime OOTSUKAYoichi SUGIZAKI
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2001 Volume 87 Issue 5 Pages 388-395

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Abstract

The warm water model experiment that assumed the blast furnace hearth has been performed, and the liquid flow and the heat transfer property have been examined. The experimental result was considered using the calculation based on the mathematical model, and the flow and the heat transfer of a real furnace were presumed.
First, the taphole height and the deadman floating height were changed. The flow was not uniform in the direction of coke free layer height when the deadman floating height was large, there existed fast flow region in the right under part of the deadman bottom and stagnation region in the furnace bottom part. Second, the liquid flow rate and the packed particle diameter were changed. When the liquid flow rate increased or the particle diameter decreased, the stream line took a roundabout way and the stagnation region reduced. Third, the deadman bottom shape was changed. When the bowl shape deadman floated entirely, the liquid flow under the deadman turned round under on the sidewall side. Fourth, the effect of the furnace bottom upheaval and the deadman permeability were examined. Not the furnace bottom upheaval but the deadman low permeability did strengthen circulating flow near the sidewall.
The last, a real furnace flow measurement using radio isotope was considered based on experimental results, it was verified that the deadman packing structure greatly influenced the liquid flow.

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