| Autor: |
Dengpeng Chai, Zhirong Shi, Xiaoxing Li, Shengzhong Bao |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
The Minerals, Metals & Materials Series ISBN: 9783319722832 |
| DOI: |
10.1007/978-3-319-72284-9_177 |
| Popis: |
Experiments on the penetration characteristics and mechanism of KF–AlF3–Al2O3 and NaF–KF–AlF3–Al2O3–X electrolytes into dry barrier materials were carried out. The results show that the penetration of the pure potassium cryolite electrolyte (KF–AlF3–Al2O3) is mainly physical, and the main penetrating substance is KAlF4. The anti-penetration ability of normal barrier materials to the pure potassium cryolite electrolyte is poor. For the NaF–KF–AlF3–Al2O3–X based electrolyte with KF content of 18.39%, when the content of NaF was increased, the penetration depth was significantly decreased. For the electrolyte with the molar ratio of 1.37 and the KF content of 18.39% (NaF–KF–AlF3–Al2O3–X), the dry barrier with Al2O3/SiO2 ratio of 0.6–0.69 had better anti-penetration ability. A layer of quartz or alumina on the surface of barrier materials could also effectively improve its anti-penetration ability. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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