Monitoring the Blast furnace working state by a combination of innovative measurement techniques

Tatjana Mirkovic, H. Bartusch, P. Ivashechkin, T. Hauck
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Abstract

At blast furnace B at Salzgitter Flachstahl a series of innovative measuring techniques are installed to monitor the processes at the blast furnace top, making this furnace one of the best equipped furnaces in Europe. These techniques comprise full 2D measurement of the temperature profile of the top gas shortly above the burden surface, 3D radar scan of the whole burden surface and online measurement of the dust concentration in the top gas. After more than 5 years’ experience with most of these techniques, they enable to better understand the complex chemical and physical interrelations occurring in the BF stack between the ascending process gas and the descending solid burden. A couple of examples of incidents that were monitored are presented in this article, including influences of charging programmes on top gas temperature profiles and influences of disturbed gas solids interaction on the BF working state. The new measuring techniques with tailor-made data processing enable the operators to gain a better picture of the processes currently occurring in the blast furnace, consequently supporting them in keeping the blast furnace operation as stable and efficient as possible.
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结合创新的测量技术对高炉工作状态进行监测
Salzgitter Flachstahl的高炉B安装了一系列创新的测量技术来监测高炉顶部的过程,使该炉成为欧洲设备最好的炉之一。这些技术包括对炉料表面上方顶部气体温度分布的全2D测量,整个炉料表面的3D雷达扫描以及顶部气体中粉尘浓度的在线测量。经过5年以上使用这些技术的经验,他们能够更好地理解高炉堆中上升过程气体和下降固体炉料之间复杂的化学和物理相互关系。本文介绍了几个监测事件的例子,包括装药方案对炉顶温度分布的影响以及扰动气固相互作用对高炉工作状态的影响。新的测量技术与量身定制的数据处理使操作员能够更好地了解当前在高炉中发生的过程,从而支持他们保持高炉运行尽可能稳定和高效。
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