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Vol.25, No.2, 125 ~ 131, 1987
Title
Thermodynamics of Fet O - CaO - CaF2 ternary Slags Saturated with Solid Iron
심재동J . D . Shim, 현도빈D . B . Hyun, 이응조E . C . Lee
Abstract
As a fundamental study on the physico-chemical properties of slags containing fluoride ion, a measurement has been made on the activity at the equilibrium of hydrogenwater vapor gas mixtures with the slags of Fe_tO-CaO-CaF₂ ternary system contained in solid iron crucible at 1400℃. From the results obtained, the activity of iron oxide and the ratio of ferrous to ferric iron (Λ=Fe^(3+)/Fe^(2+)) have been determined as a function of slag composition. The addition of F- anions increased the activity coefficient of iron oxide exponentially, but it seemed to be independent on Λ-values. The obtained results are as follows, lnγ_(Fe_tO)/lnγ^0_(Fe_tO) =1.78 N_F-
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