上吹転炉における脱燐平衡 : Schenck および Herasymenko の平衡の適用

概要

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The authers applied the dephosphorization equilibrium formulas reported by Schenck and Herasymenko to the final slag and metal of the 3-ton experimental LD converter. The results obtained were as follows. (1) The observed values of log K^<IV>_P in the Schenck's formula had a linear relation to 1/t, but they located in the upper region against the Schenck's equilibrium. (2) Assuming K^<IV'>_P [ΣP](FeO)^5(CaO)^4/(ΣP_2O_5), the next formula was obtained log K^<IV'>_P=-61, 140/t+40.13 (3) log (ΣP_2O_5)/[ΣP] had a maximum value on the value of 25∿30% of (T.Fe). (4) In the Herasymenko's formula, linear relation was obtained between log K^P_<Fe> and Ca^<++> and this relation was expressed as follows, log K^P_<Fe>=6.72(Ca^<++>)+7, 210/t-3.41 This formula had a deviation from the open-hearth formula reported by Herasymenko. This meant that the dephosphorization of an LD converter did not approach closer to the equilibrium than open-hearth furnaces.
社団法人日本鉄鋼協会の論文
1959-07-01