溶融鑛滓の粘性 (II) : CaO-SiO_2-Al_2O_3-MgO 系の粘性

概要

論文の詳細を見る
To clarify the effect of MgO on the viscosity of blast furnace slag, viscosities of synthetic CaO-SiO_2-Al_2O_3-MgO slags were measured by the rotating inner-cylinder viscosimeter as in the case of the first report. (Tetsu-to-Hagane, Vol.38, 1952, 12) Iso-viscosity lines at 1, 500 and 1, 600℃ are drawn on the diagram (Fig. 1, 2, 3) When MgO was added to CaO-SiO_2 slag, the viscosity decreased with increasing amounts of MgO up to about 20%, but thereafter increased. The region of low viscosity in CaO-SiO_2-MgO slag was greater than that in the CaO-SiO_2-Al_2O_3 slag. When MgO was added to CaO-SiO_2-Al_2O_3 slag, the viscosity decreased and moreover change in viscosity at constant temperature caused by the change of slag composition became small, but these beneficial effects of MgO were less noticeable than those reported by the previous investigator. With respect to the fluxing quality, MgO had nearly as much influence in reducing slag viscosity as CaO or slightly less.
社団法人日本鉄鋼協会の論文
1952-09-25