Activities of P2O5 in Solid Solutions between Di-calcium Silicate and Tri-calcium Phosphate at 1 573 K

被引：12

作者：

Saito, Taihei ^{[1
,2
]}

Nishimura, Toru ^{[1
,3
]}

Saito, Keijiro ^{[4
]}

Hasegawa, Masakatsu ^{[4
]}

机构：

[1] Kyoto Univ, Kyoto, Japan

[2] Nippon Steel Corp Ltd, 12 Nakamachi, Muroran, Hokkaido 0508550, Japan

[3] Mitsubishi Mat Corp, 7-147 Shimoishito, Kitamoto, Saitama 3640028, Japan

[4] Kyoto Univ, Dept Energy Sci & Technol, Sakyo Ku, Yoshida Hon Machi, Kyoto 6068501, Japan

来源：

ISIJ INTERNATIONAL | 2020年 / 60卷 / 12期

关键词：

dephosphorization; activity; di-calcium silicate; tri-calcium phosphate; solid solution; PHOSPHORUS; 2CAO-CENTER-DOT-SIO2-3CAO-CENTER-DOT-P2O5; PHASE; OXIDE;

D O I：

10.2355/isijinternational.ISIJINT-2020-181

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The knowledge of P2O5 activities in solid solutions between Ca2SiO4 and Ca3P2O8 is required for more effective dephosphorization. In the present study, firstly, the P2O5 activities in these solid solutions coexisting with CaO or CaSiO3 at 1 573 K were measured by equilibrating molten copper with oxide phases under a stream of Ar + H-2 + H2O gas mixtures. Subsequently, the sub-regular solution model was applied to Ca2SiO4-Ca3P208 solid solutions. The P2O5 activities calculated with the solution model agreed well with the present experimental results and the literature data. It was found that the P2O5 activity in Ca2SiO4-Ca3P2O8 solid solution coexisting with CaO was about 7 digits lower than that coexisting with CaSiO3

引用

页码：2780 / 2786

页数：7

共 34 条

[11] Distribution of P2O5 between Solid Dicalcium Silicate and Liquid Phases in CaO-SiO2-Fe2O3 System
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ISIJ INTERNATIONAL, 2009, 49 (04) : 505 - 511
[12] Distribution of P2O5 between solid dicalcium silicate and liquid phases in CaO-SiO2-Fe2O3 system
Tohoku University, Now Sumitomo Electric Industries, Ltd., 4-5-33 Kitahama Chuo-ku, Osaka 541-0041, Japan
不详
Tetsu To Hagane, 2009, 3 (229-235):
[13] Enhancement of optical and radiation shielding properties in calcium-magnesium silicate bioactive glasses through Na2O and P2O5 additives
Khattari, Z. Y.
Mahdy, Ebrahim A.
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Ibrahim, S.
OPTICAL MATERIALS, 2024, 147
[14] Distribution of P2O5 between Solid Dicalcium Silicate and Liquid Phases in CaO-SiO2-Fe2O3 System
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TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2009, 95 (03): : A229 - A235
[15] Effect of P2O5, CaF2 and Basicity on the Viscosity and Structure of La2O3-Bearing Calcium–Silicate–Aluminum Slag System
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[16] Effect of P2O5, CaF2 and Basicity on the Viscosity and Structure of La2O3-Bearing Calcium-Silicate-Aluminum Slag System
Xin, Wenbin
Zhang, Jing
Deng, Yongchun
Jiang, Yinju
Wang, Pengyu
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 2021, 74 (04) : 871 - 879
[17] Synthesis and characterization of calcium phosphate based bioactive quaternary P2O5-CaO-Na2O-K2O glasses
Marikani, A.
Maheswaran, A.
Premanathan, M.
Amalraj, L.
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2008, 354 (33) : 3929 - 3934
[18] Modification of the Activities of Components in Ca2SiO4-Ca3P2O8 Solid Solution at 1 573 K
Saito, Keijiro
Hasegawa, Masakatsu
ISIJ INTERNATIONAL, 2024, 64 (15) : 2149 - 2155
[19] Solubility and Activity of Iron Oxide in Solid Solutions between Ca2SiO4 and Ca3P2O8 at 1 573 K
Saito, Keijiro
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ISIJ INTERNATIONAL, 2023, 63 (04) : 631 - 638
[20] Crystal Structure, Synthesis, and Properties of tri-Calcium di-Citrate tetra-Hydrate [Ca3(C6H5O7)2(H2O)2]•2H2O
Herdtweck, Eberhardt
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ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2011, 637 (06): : 655 - 659

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