METHOD FOR MEASURING TEMPERATURE OF MOLTEN SLAG

摘要

PROBLEM TO BE SOLVED: To provide an apparatus for measuring the temperature of a molten slag which can surely measure the liquid level temperature of the molten slag even in a furnace having a high smoke dust concentration. SOLUTION: A method for measuring the temperature of the molten slag includes the steps of condensing a plurality of the radiant beams of light 8 having a wavelength region of 2-20μm of the radiant beams of the light 8 radiated from the liquid level 5a of the molten slag 5 contained in the furnace, generating the output voltage having an amplitude in response to the intensity of the incident radiant beam of the light 8 from a pyroelectric element 28 by intermittently radiating the radiant beams of the light 8 to the pyroelectric element 28, and estimating the liquid level temperature of the molten slag 5 from this output voltage value and a Planck's radiation law. COPYRIGHT: (C)2004,JPO&NCIPI