BLAST FURNACE TAPPING TEMPERATURE MEASURING SYSTEM, BLAST FURNACE TAPPING TEMPERATURE MEASURING METHOD, AND COMPUTER PROGRAM

摘要

PROBLEM TO BE SOLVED: To continuously, accurately and easily measure the temperature of molten iron at a tapping hole. SOLUTION: A concentration histogram is computed from image data of a molten iron tapping flow 2 picked up by a CCD camera 5, and a concentration value PMis determined at a peak caused by the molten iron in the computed concentration histogram. The average concentration PAin a disturbance light photometric area 62 set at a position not to overlap with an image 63 of the molten iron and an image of melt slag 64 of the image 61 of the molten iron tapping flow 2 is determined, and the concentration value PNdue to backlight noises is determined by multiplying the determined average concentration PAby the reflectance R of the molten iron. A real concentration value PTof the molten iron is determined by subtracting the concentration value PNdue to backlight noises from the concentration value PMof the peak caused by the molten iron in the concentration histogram, and the temperature of the molten iron is determined using the determined actual concentration value PTof the molten iron. COPYRIGHT: (C)2007,JPO&INPIT