還元鉄ペレットの溶鉄中への溶解速度におよぼす溶滓の影響

概要

論文の詳細を見る
The effect of molten slag on iron melt upon the dissolving rate of cylindrical reduced iron pellets made from Hoganas iron powders, Fe_2O_3 powders and pulverized additives was investigated. The following results were obtained : (1) A small portion of iron oxide in pellets dissolved into the molten slag. The dissolving rate of pellets into iron melt was determined by neglecting the reduction of iron oxide in molten slag. (2) The maximum dissolving rate appeared at about unit basicity of molten slag. The effect of molten slag on the dissolving rate could be explained from their viscosity and density. The molten slag of the lower viscosity and the lower density would be desirable for higher dissolving rates. (3) The effect of molten slag with basicity of 0.5 and 1 on the temperature dependence of the dissolving rate into iron melt was small for pellets containing Fe_2O_3 and large for those without Fe_2O_3. (4) The molten slag with unit basicity had little effect on the dissolving rate of pellets containing CaO, CaCO_3, C and flux (simultaneous addition of CaO and SiO_2). The iron oxide which dissolved into the molten slag increased with increasing prefused slag, SiO_2, and Al_2O_3 contents in pellets.
社団法人日本鉄鋼協会の論文
1979-10-01