種々の酸化物を含むヘマタイトの還元によつて生成する還元鉄の気孔径分布

概要

論文の詳細を見る
The pore-radius distribution of the reduced iron from hematite containing several foreign oxides was measured by the mercury penetration method. Hematite was reduced by hydrogen and carbon-monoxide at about 800° and 1000℃. These foreign oxides were grouped into four types depending on the effect on the pore radius. (1) The oxides such as Al_2O_3, Cr_2O_3 and TiO_2 which are considerably soluble in hematite and magnetite but practically insoluble in wustite. (2) The oxides such as CaO which are considerably soluble in wustite but have limited solubilities. (3) The oxides such as MgO which form continuous solid solutions with wustite and do not have limited solubilities. (4) The oxides such as SiO_2 which are almost insoluble in any iron oxides. According to the present work, the effects of those oxides on the pore radius in reduced iron are as follows. The oxides in group 1 form the micro pores of the radius which decreases with increasing the amount. The oxides in group 2 form the macro pores of the radius which increases with increasing the amount. The oxides in group 3 show practically little effect on the pore radius. The oxides in group 4 do not influence the pore radius.
社団法人日本鉄鋼協会の論文
1979-01-01