Observation of the Effect of Various Operating Factors on the Cohesive Zone Using the Blast Furnace Irregularity Simulator,Steel Research International

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Observation of the Effect of Various Operating Factors on the Cohesive Zone Using the Blast Furnace Irregularity Simulator
Steel Research International ( IF 1.9 ) Pub Date : 2020-09-23 , DOI: 10.1002/srin.202000315
Tae Jun Park ₁ , Soon Ki Min ₁ , Hyuk Kim ₂ , Dong Joon Min ₃

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The blast furnace (BF) process is highly complex, involving multiple phases (gases, granular solids, liquids, and powders) undergoing various chemical and physical phenomena. Any improvement in BF productivity under a given set of operating conditions necessitates a better gas flow distribution through a layered burden structure in the BF. However, it is extremely difficult to directly measure or predict the internal flows in a BF. The main zone of unstable motion in a BF is generally the cohesive zone. Herein, the cause of unstable behavior in a BF is investigated by directly observing the behavior of the cohesive zone using a BF irregularity simulator. It is found that the shape of the cohesive zone is directly influenced by the blast conditions and the height of the deadman, as well as varied change. As the blast volume increased, the height of the top level of the cohesive zone increased and the change in the temperature profile of the cohesive zone according to the difference in blast volume. Thus, it is possible to understand and estimate the unstable motion in a BF under operation by observing the real‐time behavior of the burden, using a BF irregularity simulator.

中文翻译：

使用高炉不规则模拟器观察各种操作因素对粘结区的影响

高炉（BF）工艺非常复杂，涉及经历各种化学和物理现象的多个阶段（气体，颗粒状固体，液体和粉末）。在给定的一组操作条件下，高炉生产率的任何提高都需要通过高炉中的分层负荷结构实现更好的气流分配。但是，直接测量或预测高炉内部流量非常困难。高炉中不稳定运动的主要区域通常是粘性区域。在此，通过使用BF不规则模拟器直接观察粘结区域的行为来研究BF中行为不稳定的原因。发现，粘结区域的形状直接受爆炸条件和亡者身高以及变化的影响。随着爆炸量的增加，根据鼓风量的不同，粘结区顶层的高度增加，粘结区温度曲线的变化。因此，通过使用高炉不规则模拟器观察负载的实时行为，可以了解和估算高炉在运行中的不稳定运动。

更新日期：2020-09-23

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