転炉法の酸素ジェット火点における蒸発現象

概要

論文の詳細を見る
By the measurements of radiation temperature of the hot spot of oxygen jet and by the calculation of the radiation coefficient in the field of vision of single-hole oxygen nozzle, definition of the "luminous radiation temperature" is made as the temperature of the hot spot of oxygen jet ejected onto the molten steel bath surface in BOF process. The luminous radiation temperature thus obtained is ranged from 2000 to 2600℃. Evaporation phenomena of iron at the hot spot are calculated following to the HERZ-KNUDSEN-LANGMUIR'S equation, and values of evaporation rate constant of iron, K^0_<Fe>, is obtained. Evaporation of manganese is controlled by the rate of diffusion in the bath, and the asymptote by R. G. WARD is introduced to calculate the values of K_<Mn> under an assumption of K^0_<Fe>=K_<Mn> at the boiling point of iron. The difference on the evaporation phenomena of iron researched as the "Counter-Flux-Transfer" theory and those at the hot spot of oxygen jet of BOF process are made clear. Effects of oxygen dissolved in iron on surface activation and relation between fume formation and decarburization reaction are discussed.
社団法人日本鉄鋼協会の論文
1988-05-01