|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Electrode Technology Symposium for Aluminum Production
||Research on the Penetration of Potassium-based Electrolyte into Dry Barrier Materials
||Bao Shengzhong, Chai Dengpeng, Shi Zhirong
|On-Site Speaker (Planned)
Experiments on the penetration characteristics and mechanism of KF-AlF3-Al2O3 and NaF-KF-AlF3-Al2O3-X electrolyte into dry barrier materials were carried out. The results showed that the pure potassium cryolite electrolyte（KF-AlF3-Al2O3）was mainly indicated as physical penetration in form of KAlF4, so the anti-penetration ability of normal barrier material was 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 layer was decreased significantly. For the electrolyte with the molecular ratio of 1.37 and the KF content of 18.39% (NaF-KF-AlF3-Al2O3-X), the dry barrier with aluminum to silicon ratio of 0.6-0.69 had better anti-penetration ability. A layer of quartz or alumina on the surface of barrier material could also effectively improve its anti-penetration ability.
||Planned: Light Metals