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Liquid Flow in Blast Furnace Hearth Concentrated on Inner Packed Structure

2001; The Iron and Steel Institute of Japan; Volume: 87; Issue: 5 Linguagem: Inglês

10.2355/tetsutohagane1955.87.5_388

1883-2954

Akihiko Shinotake, Morimasa Ichida, Hajime OOTSUKA, Yoichi SUGIZAKI,

Metallurgical Processes and Thermodynamics

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.