To exactly grasp the profile of a furnace wall refractory at an arbitrary place inside a furnace.
A profilometer 6 for a furnace wall sends to an arithmetic unit 11 an inclination angle and an azimuthal angle with respect to the furnace body coordinate of the profilometer 6 for the furnace wall measured with a 3-axis inclination angle meter and the distances to the furnace wall along the entire circumference of a blast furnace measured with a laser distance meter. A three-dimensional measuring instrument 1 calculates a horizontal angle and a vertical angle for measuring the position of the furnace wall profilometer 6 in the furnace body measured with an electronic theodolite and the three-dimensional coordinate position of the furnace wall profilometer 6 from the distances to the furnace wall profilometer 6 measured with the laser distance meter and send the results to the arithmetic unit 11. The arithmetic unit 11 transforms the three-dimensional furnace wall shape determined by using the measured data sent from the furnace wall profilometer 6 and the three-dimensional measuring instrument 1 from the profile coordinate to the furnace body coordinate to obtain the profile of the furnace wall. The scope conventionally dependent on the visual inspection of an operator can be eliminated, so that furnace wall repair can be practiced at a good precision and this can therefore contribute to the prolongation of a blast furnace life and the stabilization of furnace conditions.
| WO/1999/028727 | DEVICE FOR REMOVING SLAG SAMPLES |
HASHIMOTO YOSHITERU
Yoshinori Iwahara
Susumu Yamamoto
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