| Autor: |
Li, Jie, Fang, Zhao, Lai, Yan-qing, Lü, Xiao-jun, Tian, Zhong-liang |
| Zdroj: |
Journal of Central South University of Technology; Jun2009, Vol. 16 Issue 3, p422-428, 7p |
| Abstrakt: |
The electrolysis expansion of semigraphitic cathode in [K3AlF6/Na3AlF6]-AlF3-Al2O3 bath system was tested by self-made modified Rapoport apparatus. A mathematical model was introduced to discuss the effects of α CR (cryolite ratio) and β KR (elpasolite content divided by the total amount of elpasolite and sodium cryolite) on performance of cathode electrolysis expansion. The results show that K and Na (potassium and sodium) penetrate into the cathode together and have an obvious influence on the performance of cathode electrolysis expansion. The electrolysis expansion and K/Na penetration rate increase with the increase of α CR. When α CR=1.9 and β KR=0.5, the electrolysis expansion is the highest, which is 3.95%; and when α CR=1.4 and β KR=0.1, the electrolysis expansion is the lowest, which is 1.28%. But the effect of β KR is correlative with α CR. When α CR=1.6 and 1.9, with the increase of β KR, the electrolysis expansion and K/Na penetration rate increase. However, when α CR=1.4, the electrolysis expansion and K/Na penetration rate firstly increase and then decrease with the increase of β KR. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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