Electrolysis cell for a molten electrolyte
US4604177A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Feb 11, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C7/005
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A cell for producing magnesium or other metal by electrolysis of molten chloride or other electrolyte comprises at least one electrode assembly of an anode 24, at least one intermediate bipolar electrode 28, 30, 32, 34 and a cathode 26 defining generally vertical interelectrode spaces between them. To minimize current leakage, the intermediate bipolar electrodes preferably almost completely surround the anode including the edges and the bottom. In operation, a metal/electrolyte mixture is swept up the interelectrode spaces by generated chlorine gas and spills out over the cathode into a duct 20 behind the cathode, the duct including a restricted passage 58 for degassing and an inverted channel 62 to collect product metal and convey it to a metal collection chamber 18. The electrolyte surface is preferably maintained at about the level of the top edges of the intermediate bipolar electrodes by means of a level control device 22 submerged in electrolyte in the metal collection chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.