| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for detecting the temperature level at a furnace hearth part in a blast furnace at early stage with which the stable blast furnace operation can be obtained by avoiding the operational trouble accompanying the variation in the temperature level at the furnace hearth part in the blast furnace at the early stage. SOLUTION: A plurality of potential detection contacting points are fitted to the outer wall of the furnace body in the blast furnace while arranging a prescribed interval in the height direction, and the potential difference between the detection contacting points is measured and a running average value of these potential differences at a prescribed time and the present value of the potential difference are compared, and in the case that this difference becomes not higher than a prescribed value, it is judged that the temperature level at the furnace hearth in the blast furnace is lowered. COPYRIGHT: (C)2005,JPO&NCIPI
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