| 摘要 |
A cathode busbar system 1 for an electrolytic cell is characterised by a ring busbar 2, 3, 4, 5 which is asymmetric with respect to its median longitudinal plane (PX). The electrolytic cell comprises a cathode forming the bottom of said electrolytic cell and comprising a plurality of parallel cathode blocks, each cathode block being provided with at least one current collector bar and two electrical connections points, a lateral lining defining together with the cathode a volume containing the liquid electrolyte and the liquid metal resulting from the Hall-Heroult electrolysis process. The cathode and lateral lining is contained in an outer metallic shell, and said electrolytic cell further comprises a plurality of anode assemblies suspended above the cathode, each anode assembly comprising at least one anode and at least one metallic anode rod connected to an anode busbar. The cathode busbar system comprises a ring busbar 20 surrounding said outer metallic shell viewed from above, said ring busbar 20 being a substantially rectangular and defining a main plane (PR), a median longitudinal plane (PX) as well as a median transversal plane (PY), both orthogonal to said main plane (PR), said ring busbar 20 comprising two opposite parallel longitudinal parts 2, 3each extending along the long sides of the cell, and two opposite and parallel transversal parts 4, 5 extending along the ends of the cell, said ring busbar 20 is symmetric with respect to said meridian transversal plane (PY), said cathode busbar system being provided with connection means for connection with both electrical connection points of each cathode block of the cell. Also claimed is an electrolytic cell, an aluminium electrolysis plant and a method of making aluminium, all incorporating the cathode busbar system. |
