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The gas distribution in the blast furnace is of eminent importance with reference to a proper blast furnace control. Good helps to reduce reducing agents and heat losses. In the present project, a 2D gas distribution model was developed by BFI. Besides gas flow modelling, temperature exchange between gas and solid and all relevant chemical reactions were taken into consideration. The model is thereby restricted to the lumpy region: the boundary from above is the charged material surface and the softening line of the cohesive zone in the boundary from below. The input from above is delivered from an already existing charging model of Dillinger Hütte. The radial C/(O+C) as well as the radial grain size distribution are used as input from that model. Arcelor Research in Maizières (AR) has developed a simplified model of the cohesive zone. The softening line is used as input for the BFI model from below. As well as the development of the gas distribution model, AR performed trials at No 5 BF in Dillingen with their multi-point probe (a probe for measuring radial temperature distributiojn all over the shaft). Moreover, He injection through the tuyeres was carried out, and the gas was sampled by the radial in-burden probe for gas and temperature analysis over the furnace radius. The results of both multi-point and He trials were very informative and delivered hints for a dissymmetrical blast furnace.

Additional information

Authors: RAUSCH H, AG der Dillinger Hüttenwerke, Dillingen/Saar (DE);BÖHNISCH S, Betriebsforschungsinstitut (BFI), Düsseldorf (DE);SERT D, Arcelor Research, Maizières-lès-Metz (FR)
Bibliographic Reference: EUR 21948 EN (2005), 188 pp. Euro: 25
Availability: Katalogue Number: KI-NA- 21948-EN-S The paper version can be ordered online and the PDF version downloaded at:
ISBN: ISBN: 92-79-01091-3
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