CaO-SiO_2-Fe_tO 系スラグの電導度

概要

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The electrical conductivity of CaO-SiO_2-Fe_tO slag in contact with iron was measured at 1300℃ using AC bridge (1000Hz). A drastic increase of the electrical conductivity was observed with increase of Fe_tO content. The Arrhenius relation between the conductivity and the temperature were satisfied in both high and low Fe_tO slag (33.6mol% and 67.5mol% respectively). Experiments were also carried out on the effect of additives on the electrical conductivity of the slag. From the results obtained for the fayalite composition, of which SiO_2 was substituted for additives, CaO and MgO were found to contribute to the conductivity by almost the same degree as equivalent Fe_tO. TiO_2 changed the conductivity only a little, which means that TiO_2 can be substituted for equivalent SiO_2. The conductivity of the slag, where SiO_2 was substituted for Al_2O_3, was equal to that of the slag, where Al_2O_3 was assumed to fix equivalent Fe_tO. CaF_2 showed a minor increase of the conductivity. The electrical conductivities were also measured varying the basicity (CaO/SiO_2) of the slag with constant Fe_tO and additives such as MgO, CaF_2, B_2O_3, Al_2O_3 and TiO_2.
社団法人日本鉄鋼協会の論文
1975-11-01