Fluoride Desorption of Secondary Alumina at High Temperatures
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- YANG Youjian
- School of Materials & Metallurgy, Northeastern University
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- GAO Bingliang
- School of Materials & Metallurgy, Northeastern University
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- YU Jiangyu
- School of Materials & Metallurgy, Northeastern University
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- WANG Zhaowen
- School of Materials & Metallurgy, Northeastern University
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- SHI Zhongning
- School of Materials & Metallurgy, Northeastern University
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- HU Xianwei
- School of Materials & Metallurgy, Northeastern University
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Abstract
Primary alumina is used as the raw material as well as the sorbent for fluoride in aluminum electrolysis. Secondary alumina is the product of primary alumina after absorbing fluoride in exhaust pot gas. The fluorine and mass loss during heating secondary alumina was measured to study the fluoride desorption process of alumina. It was found that during the heating of secondary alumina, HF emission was always combined with H2O escape at approximately 740°C or below. 47% fluorine in secondary alumina desorbed in the form of HF at 30–740°C, while the rest 53% desorbed in the form of chiolite at 740–1100°C.
Journal
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- Electrochemistry
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Electrochemistry 81 (7), 535-537, 2013
The Electrochemical Society of Japan
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Details 詳細情報について
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- CRID
- 1390282681475917184
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- NII Article ID
- 10031178964
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- NII Book ID
- AN00151637
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- ISSN
- 21862451
- 13443542
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- NDL BIB ID
- 024669173
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Allowed