| 摘要 |
An electrolysis cell for the production of aluminium by the electrolysis of alum ina dissolved in a molten halide electrolyte, preferably at a temperature below 880 .degree.C, using a multimonopolar arrangem ent of substantially non-consumable anodes (2) and cathodes (1) with facing operative surfaces which are upright or at a slope and are in spaced substantially parallel relationship, enabling operation at low anode current density with an acceptable production pe r unit cell floor area. The operative surface area of the anodes (2) and cathodes (1) is high due to their upright of sloping confi guration. The operative surfaces of the anodes (2) and possibly of the cathodes (1) can be increased by making them porous, prefera bly with a reticulated skeletal structure, e.g. with a porous active part (13) on opposite faces of a central current feeder (12). Th ere is an upward circulation of electrolyte by gas lift between the electrodes, there being electrolyte circulation guide means such as spacers (5) adjacent the edges of the facing anodes (2) and cathodes (1). |
