The Reaction Behavior of 2CaO·SiO2 with CaO–SiO2–FeO–P2O5 Slag

Author:

Song Yansong,Hu XiaojunORCID,Chou Kuochih

Abstract

It is important to clarify the reaction behavior of 2CaO·SiO2 (C2S) during hot metal dephosphorization. In this study, C2S was prepared and added to steel slag to investigate the reaction of C2S particles with CaO–SiO2–FeO–P2O5 slag at 1723 K. The diffusion coefficient of phosphorus in C2S was calculated. In addition, the influence of the addition of BaO to C2S was discussed. The results show that the diffusion coefficient of phosphorus in C2S is 9.23 × 10−14 m2·s−1. The Ca in C2S can be replaced by Ba. Small particles in the solid solution were easily generated from the C2S body by the addition of BaO, which is beneficial for improving the phosphorus partition between the C2S solid phase and the liquid phase of the slag.

Publisher

MDPI AG

Subject

General Materials Science

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