| 摘要 |
PURPOSE:To rapidly perform precise operation of sintering machine in high frequency and with a low cost, by inputting content ratios of respective structures composing sintering ore obtd. by image analysis, etc., to RI estimating numerical model, and measuring RI of sintering ore. CONSTITUTION:At first, relating to each single structure and composited structure of single structures composing sintered ore, reducing reaction rate constant is obtd. respectively. Next, image analysis, etc., are carried out to sintered ore sample for RI measurement by using microscope, to measure content ratio and porosity ratio of respective structures contained in sintered ore. Oxygen concn. to be reduced in each structure and effective diffusion coefft. in grain are corrected by a prescribed formula while using the porosity ratio. Then attained reducing ratio under a prescribed reducing condition of each structure is otbd. by a prescribed formula by using corrected reducing reaction rate constant, etc., of these respective structures. Further, attained reduction ratios of respective structures under a prescribed condition obtd. by using content ratio and corrected reducing reaction ratio constant of respective structures in sintering ore sample for RI measurement are used to calculate RI of sintering ore sample for measuring RI by a prescribed formula.
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