固体CaOおよびCa2SiO4-Ca3P2O8固溶体と共存する液体スラグ中のFexO活量

In steelmaking processes, there are incentives to reduce slag volume and CaO consumption. The key to meet these requirements is the better understanding of CaO dissolution mechanism into molten slag, which relies on the knowledge of the thermochemical properties of slags and fluxes used for dephosph...

Full description

Saved in:
Bibliographic Details
Published in鉄と鋼 Vol. 105; no. 6; pp. 587 - 594
Main Authors 三輪, 紘平, 長谷川, 将克, 松儀, 亮太
Format Journal Article
LanguageJapanese
Published 一般社団法人 日本鉄鋼協会 2019
Subjects
activity
dephosphorization
di-calcium silicate
solid solution
tri-calcium phosphate
Online AccessGet full text
ISSN0021-1575
1883-2954
DOI10.2355/tetsutohagane.TETSU-2018-159

Cover

More Information
Summary:In steelmaking processes, there are incentives to reduce slag volume and CaO consumption. The key to meet these requirements is the better understanding of CaO dissolution mechanism into molten slag, which relies on the knowledge of the thermochemical properties of slags and fluxes used for dephosphorization. In this study, the liquidus compositions coexisted with solid CaO and Ca2SiO4-Ca3P2O8 solid solution simultaneously were determined in the quaternary system CaO-SiO2-P2O5-FexO at 1573 K. Measurements were also conducted on the FexO activities at temperatures between 1542 K and 1604 K by virtue of an electrochemical technique. By using the present experimental results, phosphorus distribution ratios were estimated.
ISSN:0021-1575
1883-2954
DOI:10.2355/tetsutohagane.TETSU-2018-159