ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Ironmaking
Development and Validation of Kinematical Blast Furnace Model with Long-term Operation Data
Yoshinari HashimotoYoshitaka SawaYohei KitamuraTakahiro NishinoManabu Kano
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2018 Volume 58 Issue 12 Pages 2210-2218

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Abstract

In order to operate a blast furnace properly, the future prediction of process variables by a transient model based on kinetics is useful. In general, such a kinematic blast furnace model includes uncertain factors regarding reaction rates and heat transfer. However, any guideline of adjusting such factors to reproduce actual transition of process variables has not been fully discussed in the literature. In this research, we developed a transient two-dimensional (2D) model for online use, and then discussed an adjustment method to reproduce the behavior of process variables when the reducing agent ratio (RAR) is changed from the viewpoint of mass and heat balance with the Rist diagram. It was found that appropriate consideration of the chemical reserve zone and the heat balance of the furnace was effective to fit the developed model to the actual data.

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© 2018 by The Iron and Steel Institute of Japan
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