<報文>鉄ケイ酸塩スラグの溶融範囲に及ぼすライムの影響

概要

論文の詳細を見る
The influence of the addition of CaO on the liquidus isotherm at 1300℃ was examined for iron silicate slags composed of Fe_2O_3,SiO_2 and FeO. Solubilities of SiO_2 in slags were determined by analysis of the melt equilibrated with quartz crucible for 0,5,10,15 and 20 percent CaO sections of the composition tetrahedron Fe_2O_3-SiO_2-FeO-CaO. Liquidus of Fe_3O_4 or other boundaries were studied at levels of 0,10 and 20 percent CaO by the usual quenching-microscopic technique. Isothermal phase diagrams at 1300℃ were then constructed for 0,10 and 20 percent CaO sections. Results are obtained as follows : (1) liquid field boundaries determined at zero percent CaO level are practically in agreement with those reported by Schuhmann et al., (2) solubility of SiO_2 in slag increases with CaO content, (3) at higher CaO levels, in general, liquid field covers more of the sectional area ; but the addition of CaO has no effect to suppress the precipitation of Fe_3O_4,and (4) in the region of high CaO content and very low SiO_2 content the molten "calcium ferrite" appears, which attracts attention of copper metallurgists in connection with the continuous converting.
東北大学の論文
1976-09-30