鋁電解槽石墨化陰極和槽殼的變形

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Deformation in the graphitized cathodes and on the shells of aluminum reduction cells

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;
3. Ningxia Qingtongxia Energy Aluminium Group, China Power Investment Corporation, Yinchang 750002, China

摘要: 通過實驗室和工業電解槽系統研究了鋁電解槽陰極和槽殼的變形,從中獲取鈉膨脹系數并用于工業陰極和槽殼的應力場的模擬分析,在考慮溫度梯度熱應力和鈉膨脹化學應力共同作用條件下,獲得了工業槽焙燒、啟動后槽殼的變形位移數值.用機械式位移計對350 kA石墨化陰極工業電解槽變形進行了長達360 d的現場測試和監測,模擬值與實測值吻合.
- 鋁冶金 /
- 電解還原 /
- 電解槽 /
- 變形 /
- 有限元分析
Abstract: Deformations in the cathode and on the shell of aluminum reduction cells were systematically investigated in laboratory and industrial cells. The sodium expansion coefficient was obtained from test data. Numerical simulation was utilized to study the stress fields of the cathode and the shell, which took not only the sodium expansion chemical stress but also the temperature gradient thermal stress into account. The displacements of the shell during cell heating treatment and after start-up were acquired. The deformation on the shell of a 350 kA cell with the graphitized cathode has been monitored and measured for 360 d with a mechanical displacement meter. It is found that the simulation values are in good agreement with the measured ones.
- aluminum metallurgy /
- electrolytic reduction /
- electrolytic cells /
- deformation /
- finite element method