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Metallurgical and Materials Transactions B

Erschienen in:

05.03.2021 | Original Research Article

Effect of Ionic Structure on Dissolution Behavior of Nickel in Aluminosilicate Slags

verfasst von: Joon Sung Choi, Tae Jun Park, Dong Joon Min

Erschienen in: Metallurgical and Materials Transactions B | Ausgabe 3/2021

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Abstract

The effects of basicity and anionic species on the solubility of Ni in CaO-MgO-Al₂O₃-SiO₂ slags were investigated based on the thermodynamic evaluation and structural analysis of the coordination number of Al ions via ²⁷Al 500-MHz solid-state nuclear magnetic resonance spectroscopy. Depending on slag basicity, Ni dissolution followed two mechanisms, involving Ni²⁺ and NiO₂²⁻ as ionic species. The solubility–basicity plot was found to be a concave upward curve with a minimum value. Structural investigation indicated that Ni solubility decreased with increasing Al₂O₃ content owing to the concomitant increase in the repulsion between AlO₄⁵⁻ and NiO₂²⁻ ions. The effects of Al₂O₃- and SiO₂-derived anionic species on Ni solubility were also discussed based on the results of the structural analysis of slag and thermodynamic evaluation.

Vorheriger Artikel Strength and Bonding Mechanism of Nonhydraulic Cementitious Binders: Reutilization of MgO in Basic Oxygen Furnace Dust

Nächster Artikel Numerical Simulation on Refractory Wear and Inclusion Formation in Continuous Casting Tundish

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Titel: Effect of Ionic Structure on Dissolution Behavior of Nickel in Aluminosilicate Slags
verfasst von: Joon Sung Choi
Tae Jun Park
Dong Joon Min
Publikationsdatum: 05.03.2021
Verlag: Springer US
Erschienen in: Metallurgical and Materials Transactions B / Ausgabe 3/2021
Print ISSN: 1073-5615
Elektronische ISSN: 1543-1916
DOI: https://doi.org/10.1007/s11663-021-02096-8

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