Toward a Better Understanding of Blast Furnace Raceway Blockages,Steel Research International

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Toward a Better Understanding of Blast Furnace Raceway Blockages
Steel Research International ( IF 1.9 ) Pub Date : 2020-06-09 , DOI: 10.1002/srin.202000227
Stefan Puttinger ₁ , Hugo Stocker ₂

Affiliation

Operational data of two small size blast furnaces (BFs) with respect to the occurrence of raceway blockages are analyzed. These blockages mainly occur due to erratic movements in the burden. In a previous project, the authors have investigated the various types of raceway blockages and tested different approaches to implement a reliable way to detect such blockages at a very early stage. Early detection of severe blockage events is important to avoid tuyere damages and trigger operational reactions like, e.g., the shutdown of pulverized coal injection (PCI) branches. The most promising algorithm of the previous project has been implemented in the process control system of the BFs and enhanced with the additional calculation of a strength factor serving as an indicator for the severity of a blockage event. The system is now collecting data on raceway blockages since the beginning of 2019. As there is now a good data basis available, herein, the latest findings on blockage event statistics and the correlation with other operational data of the BF are presented.

中文翻译：

更好地了解高炉管道的堵塞

分析了两个小型高炉（BF）的运行数据，它们与发生滚道堵塞有关。这些堵塞主要是由于装载物的不规则运动引起的。在先前的项目中，作者研究了各种类型的滚道阻塞，并测试了不同的方法，以在早期阶段实施可靠的方法来检测此类阻塞。早期发现严重的阻塞事件对于避免风口损坏和触发操作反应（例如关闭煤粉喷射（PCI）分支）非常重要。高炉的过程控制系统已实施了先前项目中最有前途的算法，并通过额外计算强度因子（作为堵塞事件的严重性指标）来增强了算法。

更新日期：2020-06-09

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