| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a temperature measuring method in a fusion furnace and a temperature-gas concentration simultaneous measuring method capable of measuring the temperature of an object erosive at high temperature across thick dust, and measuring the gas concentration in a thick dust atmosphere. SOLUTION: A window 8 is provided on the fusion furnace 1, and infrared light emitted from the liquid surface of slag 2 in the fusion furnace 1 through the window 8 is condensed by a condensing lens 9. Of infrared light condensed by the condensing lens 9, radiation energy at two or more spots are detected in a wavelength region under no influence of gas by a Fourier transform type infrared detector 10, and the temperature is measured from the radiation energy at two or more spots.</p> |
