METHOD OF MONITORING ABRASION OF REFRACTORY LINING FOR METALLURGICAL FURNACE WALL

摘要

In the monitoring the wear of a refractory lining (5) of a metallurgical furnace wall (3, 5) during use of the furnace, it is sought to improve the reliability and accuracy of the measurement. To this end, the following steps are carried out.… 1) a bar (1) of ceramic material is arranged in said wall so that the bar has an inner end (6) at the inner face of the lining (5) and extends to the exterior of the wall, the bar thus being subjected to wear at its inner end as the lining wears… 2) when desired, the position of the worn inner end (6) of the bar is determined ultrasonically by generating ultrasonic pulses in the bar and detects the reflection of said pulses from the worn inner end of the bar. The invention is especially applicable to blast furnaces.