| Patents for C25C 3 - Electrolytic production, recovery or refining of metals by electrolysis of melts (10,924) |
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| 05/14/1981 | WO1981001299A1 Process and device for suppressing magnetic disturbances in electrolytic cells |
| 05/12/1981 | CA1100906A1 Method for improving current feed to lengthwise aligned electrolysis baths |
| 05/05/1981 | US4265717 Method and apparatus for protecting electrodes from thermal shock during start up |
| 05/05/1981 | US4265716 Disproportionation of aluminum sulfide formed over carbon reducing agent |
| 04/29/1981 | EP0027534A1 Carbonaceous contact mass |
| 04/28/1981 | US4264371 Forming liquid-tight electroconductive seams for repairing electrolytic cells; comprising aggregate, pitch, solvent |
| 04/28/1981 | CA1100097A1 Dual current supply system for aluminium-producing electrolyzers |
| 04/21/1981 | CA1099665A1 Method of reducing heat radiation from electrolytic alumina reduction cell |
| 04/15/1981 | EP0027016A1 Improvement in an apparatus for electrolytic production of magnesium metal from its chloride |
| 04/14/1981 | US4261807 Asymmetrical arrangement of busbars for electrolytic cells |
| 04/14/1981 | CA1099081A1 Pyrohydrolysis process for spent aluminum reduction cell linings |
| 04/14/1981 | CA1099080A1 Pyrohydrolysis system for processing fluorine- containing spent and waste materials |
| 04/14/1981 | CA1099079A1 Modified pyrohydrolysis process for spent aluminum reduction cell linings |
| 04/08/1981 | EP0026735A1 Apparatus for charging electrolytic ovens and process for its operation |
| 04/07/1981 | CA1098864A1 Arrangement for compensating for detrimental magnetic influence between two or more rows of transverse electrolytic pots or cells for producing aluminum, by electrolytic reduction |
| 04/02/1981 | WO1981000865A1 Electrode composition |
| 03/31/1981 | US4259161 Process for producing aluminum and electrodes for bipolar cell |
| 03/24/1981 | US4257855 Corrosion resistant anode with packed bed of consumable carbon |
| 03/24/1981 | CA1098077A1 Electrolytic cell for the production of aluminium |
| 03/18/1981 | EP0025418A1 Chisel for a crust-breaking device and method of operating it |
| 03/18/1981 | EP0025417A1 Crust-breaking device for an electrolytic furnace |
| 03/18/1981 | EP0025416A1 Crust-breaking device for an electrolytic furnace |
| 03/18/1981 | EP0025415A1 Aluminium electrolyzing cell with a pneumatically or hydraulically operable pressure cylinder system of a crust-breaking device |
| 03/18/1981 | EP0025414A1 Storage bin for a crust-breaking device |
| 03/18/1981 | EP0025360A1 Method and apparatus for cleaning electrodes |
| 03/17/1981 | US4256551 Laminar flow |
| 03/17/1981 | CA1097588A1 Flow control baffles for molten salt electrolysis |
| 03/03/1981 | US4253823 Procedure and apparatus for baking carbon bodies |
| 03/03/1981 | CA1096810A1 Adjusting fused salt electrolytic bath with higher valency salt |
| 03/03/1981 | CA1096716A1 Process for obtaining articles which are designed to operate at elevated temperatures in oxidizing atmospheres and carbon articles obtained by such a process |
| 02/25/1981 | EP0024127A1 Arrangement and method for compensating for detrimental magnetic influence on longitudinally orientated pots in a row |
| 02/19/1981 | WO1981000421A1 In-cell manganese ore reduction |
| 02/10/1981 | US4250012 System of current supply buses for aluminum-producing electrolyzers |
| 02/03/1981 | US4248556 Method for smoothing the surface of bar material |
| 01/28/1981 | EP0022921A1 Regenerable, shape-stable electrode for use at high temperatures |
| 01/27/1981 | US4247381 Metal pipe, ceramic protective pipe |
| 01/20/1981 | US4246035 High purity mortar suitable for bonding refractory brick |
| 01/20/1981 | CA1094016A1 Conductor arrangement for compensating for horizontal magnetic fields in pots containing a molten electrolytic bath |
| 01/20/1981 | CA1093832A1 Process for the utilization of waste materials from electrolytic aluminum reduction systems |
| 01/07/1981 | EP0021850A1 Alumina reduction cell, methods of producing such a cell, and use thereof in the manufacture of aluminium |
| 01/07/1981 | EP0020576A1 Method for lining electrolysis cells for the production of aluminium. |
| 01/06/1981 | US4243502 Cathode for a reduction pot for the electrolysis of a molten charge |
| 01/06/1981 | CA1093007A1 Cooling a chamber wall in a fused electrolytic salt bath |
| 12/16/1980 | US4239606 Production of extreme purity aluminum |
| 11/26/1980 | EP0019425A1 Process for baking carbon electrodes |
| 11/25/1980 | US4235830 Flue pressure control for tunnel kilns |
| 11/25/1980 | CA1090284A1 Use of materials in molten salt electrolysis |
| 11/25/1980 | CA1090283A1 Electrolytic production of metal |
| 11/11/1980 | US4233148 Electrode composition |
| 11/11/1980 | CA1089403A1 Electrolysis of a molten charge using inconsumable electrodes |
| 11/04/1980 | US4231857 Process for preparing petroleum-derived binder pitch |
| 11/04/1980 | US4231853 Cathodic current conducting elements for use in aluminum reduction cells |
| 10/29/1980 | EP0018326A1 Hood for an aluminium reduction cell |
| 10/29/1980 | EP0017653A1 Quenching anode effect by anode rocking |
| 10/28/1980 | US4230545 Process for reducing lead peroxide formation during lead electrowinning |
| 10/28/1980 | US4230540 Technique for automatic quenching of anode effects in aluminium reduction cells |
| 10/21/1980 | CA1088022A1 Electrolytic production of metal |
| 10/15/1980 | EP0017612A1 Apparatus for continuously feeding alumina by means of a metering apparatus |
| 10/01/1980 | EP0016728A1 Electrolytic cell for the production of aluminium by fusion electrolysis of aluminium salts |
| 09/23/1980 | US4224128 Cathode assembly for electrolytic aluminum reduction cell |
| 09/23/1980 | US4224127 Aluminum production |
| 09/23/1980 | US4224120 Electrolytic method and apparatus for producing magnesium from a salt solution containing magnesium sulphate |
| 09/23/1980 | US4224119 In-cell manganese ore reduction |
| 09/23/1980 | CA1086255A1 Production of metallic lead |
| 09/17/1980 | EP0015636A1 Method for lining an aluminum electrolytic cell |
| 09/16/1980 | US4223077 Na+ -conducting glass, glass-ceramic and crystalline cubic composition |
| 09/16/1980 | US4222841 Hall cell |
| 09/16/1980 | US4222830 Production of extreme purity aluminum |
| 09/09/1980 | US4221641 Method of changing electrodes in a reduction cell |
| 09/09/1980 | CA1085346A1 Process for joining metal bars with carbon blocks |
| 09/02/1980 | USRE30392 Wick-and-pool electrodes for electrochemical cell |
| 09/02/1980 | CA1084865A1 Method for recovering manganese metal from ferro- manganese |
| 08/26/1980 | US4219401 Metal electrowinning feed cathode |
| 08/26/1980 | US4219391 Electrolytic production of metal |
| 08/19/1980 | US4218300 Covering for a cell for fused salt electrolysis |
| 08/19/1980 | CA1083994A1 Production of aluminum-silicon alloys in an electrolytic cell |
| 08/19/1980 | CA1083784A1 Process for recovery of alumina-cryolite waste in aluminum production |
| 08/12/1980 | WO1980001698A1 Symmetrisation process of the vertical magnetic field in igneous electrolysis cells located transversaly |
| 08/12/1980 | US4217197 Apparatus for removing anode residue from anodes of electrolytic melt baths |
| 08/12/1980 | CA1083523A1 Process for the electrolysis of a molten charge using inconsumable bi-polar electrodes |
| 08/05/1980 | US4216273 Electrochemical device with solid separator and solid electrolyte |
| 08/05/1980 | US4216066 Preparation of tetramethyltin from a magnesium-tin alloy |
| 07/29/1980 | US4214956 Electrolytic purification of metals |
| 07/29/1980 | US4214955 Passing through porous membrane |
| 07/29/1980 | CA1082628A1 Chemical pitch |
| 07/22/1980 | CA1082125A1 Production of aluminium |
| 07/08/1980 | USRE30330 Aluminum purification |
| 07/08/1980 | US4211626 Dual current supply system for aluminum-producing electrolyzers |
| 07/08/1980 | CA1081150A1 Coal purification |
| 07/01/1980 | US4210514 Process for reducing the magnetic disturbances in series of high-intensity electrolysis tanks |
| 07/01/1980 | US4210513 Pneumatic anode positioning system |
| 06/24/1980 | CA1080307A1 Optical telemetry for aluminium reduction plant bridge cranes |
| 06/24/1980 | CA1080151A1 Forming crust in electrolysis of salt charge of aluminium oxide content above eutectic point |
| 06/03/1980 | US4206263 Oxygen-resistant electroconductive carbon bodies |
| 06/03/1980 | CA1078601A1 Carbon electrodes having stabilized binders derived from the entire organic fraction of bituminous coal |
| 05/27/1980 | CA1078332A1 Diaphragmless electrolyzer for producing magnesium and chloride |
| 05/27/1980 | CA1078106A1 Refractory material suitable in particular for the production and handling of aluminium |
| 05/20/1980 | US4203819 Electrolytic cell with flow detection means |
| 05/15/1980 | WO1980000978A1 Method of lining electrolytic cells for the production of aluminium |
| 05/13/1980 | US4202753 Improved shield installation |