在电解槽三维电位场计算的基础上,对电解槽在不同工艺条件下及不同结构时的电流场进行了数值计算:1)伸腿长度为零的理想情况;2)伸腿伸至阳极底部;3)不同铝水平及换极;4)泄流式电解槽.通过分析发现,铝液中y-向电流密度沿阴极长度方向表现出先增后降的趋势,Jy 的幅值随铝液层面降低有所增加.在伸腿伸至阳极底部时,在槽边部会出现较大的逆向电流,伸腿越长,逆向水平电流越大.铝液层面中垂直电流密度沿阴极碳块长度方向自里向外呈现增加趋势,且铝液层面越低,电流密度变化梯度越大.铝液中x向电流可以忽略,且随铝水平变化较小.泄流式电解槽熔体中存在较大的电流密度集中现象,炉底压降相对较大.
参考文献
| [1] | Tarapore E D.The effect of some operating variables on flow in aluminum reduction cells[J].轻金属,1981:341-355. |
| [2] | Arita Y;ikeuchi H.Numerical calculation of bath and metal convection patterns and their interface profile in Al Reduction cells[J].轻金属,1981:357-371. |
| [3] | Robl R F.Metal flow dependence on ledging in hall-heroult cells[J].轻金属,1983:449-456. |
| [4] | Fraser K J;Billinghurst D;Chen K L.Some applications of mathematical modelling of electric current distributions in Hall Heroult cells[J].轻金属,1989:219-226. |
| [5] | El Demerdash M F;Khali E E;Ahmed H A.Modelling of metal topography and flow regimes in working pre baked aluminum pot[J].轻金属,1993:369-374. |
| [6] | 梅枳.有色冶金炉窑仿真与优化[M].北京:冶金工业出版社,2001 |
| [7] | 戚喜全,冯乃祥.铝电解槽阴极三维电位场数值计算与分析[J].材料与冶金学报,2003(02):103-107. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%