高炉炉衬检测技术应用及展望

来源期刊：冶金自动化2010年第6期

论文作者：胡正文 刘征建 左海滨 张建良 杨天钧

文章页码：7 - 13

关键词：高炉； 炉衬侵蚀； 测厚； 无损检测

Key words：blast furnace； lining erosion； thickness measurement； non-destructive testing

摘    要：现代高炉寿命主要取决于耐火炉衬的剩余厚度,因此检测炉衬侵蚀状况十分必要。详细论述了电阻法、超声波法、声超声回波(AU-E)法、模型推断法等几种典型高炉炉衬检测技术的基本原理、结构、系统或设备及应用状况。通过对各种直接测量法和间接推断法的综合比较及评价,指出了高炉炉衬检测技术的未来发展趋势。基于炉内热电偶的有效温度读数和应力波发射等先进直接测量技术,并结合热模拟及结果输出和反馈的检测方法,将是未来监测生产高炉炉衬侵蚀状况的最完善方法。

Abstract: The campaign life of a modern blast furnace is mainly determined by the residual thickness of the refractory lining,therefore it is absolutely necessary to examine lining erosion.Several kinds of typical blast furnace lining detection methods,including electric resistance method,ultrasonic method,acousto ultrasonic-echo(AU-E)technique and model inference method,are presented and discussed in detail in this paper concerning their basic principles,application systems or equipment and their application status.On the basis of comprehensive comparison and evaluation of the various direct measurement methods and the indirect inference methods,further development trends of blast furnace refractory lining detection techniques are suggested.The most promising approach to monitoring lining erosion of an operating blast furnace is recommended to be based on advanced direct measurement methods that are intergraded with thermal modeling and make full use of information derived from valid temperature values of thermocouples and output and feedback of the detection systems.