| 摘要 |
PURPOSE:To measure the concn. of components in product sintered ore at an early stage with high precision and to stabilize the blast furnace operation by introducing laser emission spectrometry. CONSTITUTION:A laser emission spectrometer 1 is provided on a Dwight-Lloyd sintering machine, and a laser beam is irradiated on the point A on the surface of a sintered layer 3 through a nozzle 2 to emit light by excitation. The light is analyzed with emission spectrometry, and the concn. of the components at the point A on the surface is measured by a calculator 5. The concn. of components is corrected on the basis of a relation between the concn. of components of the surface layer part of the sintered layer 3 which is already inputted to the calculator 5 and the concn. of components of the product sintered ore, and the concn. of components of the product sintered ore is estimated. The value is fed back to an auxiliary material system, and the quarrying of auxiliary materials such as limestone and serpentinite is regulated on the basis of said information. The concn. of components of product sintered ore such as T.Fe, CaO, and SiO2 is thus controlled to obtain the desired value.
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