擬似粒子の合体現象に与える鉄鉱石性状の影響

Abstract

The fluidity and amount of formed melt seem to be important factors for the coalescing of granules in the iron are sintering process, since the coalescing phenomenon is essentially based on the bonding among unfused particles with the melt formed by the partial fusion of the granules. In this study, simplified sintering experiments was conducted using tablets consisted of the mixture of an iron are and limestone so as to estimate the fluidity of raw materials qualitatively at high temperatures. As the results, it was found how the sintering temperature, mixing ratio of limestone, kind and particle size of iron ores used and so forth influence the fluidity. The results also suggested that the segregation of materials affects significantly the fluidity. A fair linear relation was found between the fluidity obtained for the adhering mixtures of the modeled granules and the strength of the sintered granules. Further, the effect of the pre-calcination of limonitic ore, which was used as cores of the modeled granules, on the strength after sintering was examined.