Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 22, Issue -, Pages 110-119Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2014.06.031
Keywords
Rheological properties; Local structure; Laboratory ash; Quenched slag; Solid-state NMR
Funding
- New Energy and Industrial Technology Development Organization (NEDO)
- Global Center of Excellence (G-COE) of Kyushu University
- J-Power Company
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The crystalline and microstructural transformations of two laboratory ashes and their quenched slags (from a gasifier) with similar chemical compositions (one with high silicon dioxide (SiO2) concentrations and the other with high aluminum oxide (Al2O3) concentrations) were systematically characterized using X-ray diffraction, multinuclear solid-state nuclear magnetic resonance, and a high-temperature viscometer. The results show that the content of SiO2 and Al2O3 in ash has significant influence on the crystal types and size of cristobalite clusters in the liquid slag during heat treatment. Consequently, the formed cristobalite clusters was the crucial to the viscosities and rheological properties of liquid slags. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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