Liquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 melts
Temperatures for the primary crystallization of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 system adopted in aluminum electrolysis process were determined by thermal analysis. An empirical equation was derived to describe the liquidus temperatures for the primary crystallization of this multicomponent elect...
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| Format: | Article |
| Language: | English |
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Technical Faculty, Bor
2014-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391300040P.pdf |
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| author | Peng J.P. Di Y.Z. Wang Y.W. Bai Y.B. Feng N.X. |
| author_facet | Peng J.P. Di Y.Z. Wang Y.W. Bai Y.B. Feng N.X. |
| author_sort | Peng J.P. |
| collection | DOAJ |
| description | Temperatures for the primary crystallization of
Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 system adopted in aluminum electrolysis
process were determined by thermal analysis. An empirical equation was
derived to describe the liquidus temperatures for the primary
crystallization of this multicomponent electrolyte system: t/℃=1011 +
0.7w(AlF3) - 0.232w(AlF3)2 - 7.65w(Al2O3) + 0.523w(Al2O3)2 - 8.96w(LiF) +
0.043w(LiF)2 - 3.32w(KF) - 0.12w(KF)2 - 3.28w(CaF2) +0.037w(CaF2)2 +
0.091w(AlF3)w(LiF) + 0.074w(AlF3)w(KF) + 0.084w(AlF3)w(CaF2) -
0.27w(Al2O3)w(LiF), where w(AlF3) denotes the mass fraction of excess
aluminum fluoride with respect to cryolite. While w(Al2O3) ranges from 2% to
4%, w(LiF), w(KF) and w(CaF2) from 0 to 7%, and the molar ratio of NaF/AlF3
from 2.2 to 3. |
| first_indexed | 2024-12-23T05:29:25Z |
| format | Article |
| id | doaj.art-9f29dbb7b88b4a42a414bd756b0794ed |
| institution | Directory Open Access Journal |
| issn | 1450-5339 |
| language | English |
| last_indexed | 2024-12-23T05:29:25Z |
| publishDate | 2014-01-01 |
| publisher | Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj.art-9f29dbb7b88b4a42a414bd756b0794ed2022-12-21T17:58:31ZengTechnical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392014-01-01501232610.2298/JMMB130606040P1450-53391300040PLiquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 meltsPeng J.P.0Di Y.Z.1Wang Y.W.2Bai Y.B.3Feng N.X.4School of Material & Metallurgy, Northeastern University, Shenyang, Liaoning, China + Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang, Liaoning, ChinaSchool of Material & Metallurgy, Northeastern University, Shenyang, Liaoning, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang, Liaoning, ChinaSchool of Material & Metallurgy, Northeastern University, Shenyang, Liaoning, ChinaSchool of Material & Metallurgy, Northeastern University, Shenyang, Liaoning, ChinaTemperatures for the primary crystallization of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 system adopted in aluminum electrolysis process were determined by thermal analysis. An empirical equation was derived to describe the liquidus temperatures for the primary crystallization of this multicomponent electrolyte system: t/℃=1011 + 0.7w(AlF3) - 0.232w(AlF3)2 - 7.65w(Al2O3) + 0.523w(Al2O3)2 - 8.96w(LiF) + 0.043w(LiF)2 - 3.32w(KF) - 0.12w(KF)2 - 3.28w(CaF2) +0.037w(CaF2)2 + 0.091w(AlF3)w(LiF) + 0.074w(AlF3)w(KF) + 0.084w(AlF3)w(CaF2) - 0.27w(Al2O3)w(LiF), where w(AlF3) denotes the mass fraction of excess aluminum fluoride with respect to cryolite. While w(Al2O3) ranges from 2% to 4%, w(LiF), w(KF) and w(CaF2) from 0 to 7%, and the molar ratio of NaF/AlF3 from 2.2 to 3.http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391300040P.pdfliquidus temperatureselectrolyte systemaluminum electrolysis |
| spellingShingle | Peng J.P. Di Y.Z. Wang Y.W. Bai Y.B. Feng N.X. Liquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 melts Journal of Mining and Metallurgy. Section B: Metallurgy liquidus temperatures electrolyte system aluminum electrolysis |
| title | Liquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 melts |
| title_full | Liquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 melts |
| title_fullStr | Liquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 melts |
| title_full_unstemmed | Liquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 melts |
| title_short | Liquidus temperatures of Na3AlF6-AlF3-CaF2-KF-LiF-Al2O3 melts |
| title_sort | liquidus temperatures of na3alf6 alf3 caf2 kf lif al2o3 melts |
| topic | liquidus temperatures electrolyte system aluminum electrolysis |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391300040P.pdf |
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