TY - JOUR
T1 - Inhibitory Effect of MgO, FeO, CaF2, and Al2O3 Additives on the Dissolution Behavior of Ca from Silicate Mineral Phases into Water
AU - Ruan, Fang
AU - Kawanishi, Sakiko
AU - Sukenaga, Sohei
AU - Shibata, Hiroyuki
N1 - Funding Information:
This work was financially supported in part by a Grant-in-Aid for Scientific Research (B) Grant (No. 19H02487) from the Japan Society for the Promotion of Science (JSPS). Thanks for the professional comments and technical support in TEM observation from Prof. Nagasako and Mr. Ito (Tohoku University). The authors would like to thank Mr. Hino and Mr. Akiyama (Tohoku University) for their technical support in using ICP-AES of the IMRAM Central Analytical Facility. The authors would also thank Prof. Sato (Niigata University) and Prof. Hasegawa (Tohoku University) for technical support in calculating the lattice energy. This study was partly supported by Tohoku University CINTS by Nanotechnology Platform Program of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan (No. JPMX09F(A)-20-TU-0018).
Publisher Copyright:
© 2021, The Minerals, Metals & Materials Society and ASM International.
PY - 2022/2
Y1 - 2022/2
N2 - The inhibitory effect of MgO, FeO, CaF2, and Al2O3 additive on the dissolution of Ca into water from 10 quasi-ternary silicate mineral phases was studied according to the silicate crystal structure. After adding MgO or FeO, the dissolution ratio of Ca decreased by Ca2+ substitution with Mg2+ or Fe2+. In the CaF2-added silicate phase Ca4Si2O7F2, non-existence of the face-sharing type of linkage between CaOx polyhedrons could be a reason for the low dissolution ratio of Ca. In Al2O3-containing silicates, Al atoms could form [AlO4]5− and [AlO6]9− polyhedrons linked to [SiO4]4− tetrahedrons to form a complicated silicate network structure with a higher polymerization degree, which helps suppress the dissolution of Ca. The dissolution ratio of Ca is also inversely correlated to the overall polymerization degree in the silicate network structure. Using multivariate analysis, the dissolution ratio of Ca was predicted utilizing factors internal to the silicate structure (corrected basicity, polymerization degree of silicate network structure, lattice energy, and average nearest neighbor Ca–O distance). For both quasi-binary and quasi-ternary systems, the overall polymerization degree of silicate network strongly affects the dissolution of Ca, while the other factors only make slight contributions.
AB - The inhibitory effect of MgO, FeO, CaF2, and Al2O3 additive on the dissolution of Ca into water from 10 quasi-ternary silicate mineral phases was studied according to the silicate crystal structure. After adding MgO or FeO, the dissolution ratio of Ca decreased by Ca2+ substitution with Mg2+ or Fe2+. In the CaF2-added silicate phase Ca4Si2O7F2, non-existence of the face-sharing type of linkage between CaOx polyhedrons could be a reason for the low dissolution ratio of Ca. In Al2O3-containing silicates, Al atoms could form [AlO4]5− and [AlO6]9− polyhedrons linked to [SiO4]4− tetrahedrons to form a complicated silicate network structure with a higher polymerization degree, which helps suppress the dissolution of Ca. The dissolution ratio of Ca is also inversely correlated to the overall polymerization degree in the silicate network structure. Using multivariate analysis, the dissolution ratio of Ca was predicted utilizing factors internal to the silicate structure (corrected basicity, polymerization degree of silicate network structure, lattice energy, and average nearest neighbor Ca–O distance). For both quasi-binary and quasi-ternary systems, the overall polymerization degree of silicate network strongly affects the dissolution of Ca, while the other factors only make slight contributions.
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U2 - 10.1007/s11663-021-02376-3
DO - 10.1007/s11663-021-02376-3
M3 - Article
AN - SCOPUS:85120486378
SN - 1073-5615
VL - 53
SP - 407
EP - 417
JO - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
IS - 1
ER -