| Patents for C25C 3 - Electrolytic production, recovery or refining of metals by electrolysis of melts (10,924) |
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| 12/23/1999 | WO1999041429B1 Drained cathode aluminium electrowinning cell with improved alumina distribution |
| 12/23/1999 | CA2301141A1 Methods of using an aqueous composition containing a water-soluble or water-dispersible synthetic polymer and resultant compositions formed thereof |
| 12/22/1999 | CN1239152A La, Pr and Ce mixed rare-earth metal and its making technology |
| 12/21/1999 | CA2015364C Arrangement for gas collection in aluminium reduction cells |
| 12/16/1999 | WO1999064638A1 Removal of oxygen from metal oxides and solid solutions by electrolysis in a fused salt |
| 12/14/1999 | US6001236 A protective coating is applied from a slurry of pre-formed refractory boride in a colloidal carrier selected from yttria, ceria, thoria, zirconia, magnesia, lithia, aluminum phosphate, cerium acetate; corrosion and oxidation resistance |
| 12/14/1999 | CA2113696C Non-consumable anode and lining for aluminum electrolytic reduction cell |
| 12/07/1999 | CA2101660C High intensity electrolysis cell superstructure for aluminum production |
| 12/07/1999 | CA2008225C Aluminium electrolysis cell with continuous anode |
| 12/04/1999 | CA2273187A1 Method of dehydration of chlorides |
| 11/25/1999 | WO1999060180A1 Method and apparatus for the treatment of a melt |
| 11/25/1999 | WO1999041429A8 Drained cathode aluminium electrowinning cell with improved alumina distribution |
| 11/25/1999 | CA2333223A1 Method and apparatus for the treatment of a melt |
| 11/24/1999 | EP0958409A1 Process for the electrolytic production of metals |
| 11/24/1999 | EP0633870B1 Prevention of oxidation of carbonaceous and other materials at high temperatures |
| 11/24/1999 | CN2350407Y High-efficiency preroasting anode aluminium electrolyzer |
| 11/24/1999 | CN1236399A Process for obtaining titanium or other metals using shuttle alloys |
| 11/24/1999 | CN1236019A Phosphorous pig iron for assembling anode for electrolysis of aluminium |
| 11/18/1999 | WO1999058435A1 Method for conveying on high-density bed powder materials and device with potential fluidisation for implementing same |
| 11/17/1999 | EP0843745B1 Maintaining protective surfaces on carbon cathodes in aluminium electrowinning cells |
| 11/17/1999 | EP0675762B1 Method and plant for grinding old brasques and similar products |
| 11/16/1999 | US5985114 Applying to carbon body treating liquid comprising precipitable boron compound and additive for enhancing oxidation resistance, precipitating, curing |
| 11/11/1999 | WO1999057336A1 System and method for predicting impending anode effect in aluminum reduction cells |
| 11/09/1999 | CA2095082C Electrolytic removal of magnesium from molten aluminum |
| 11/03/1999 | EP0953070A1 The start-up of aluminium electrowinning cells |
| 11/03/1999 | CN1046141C Aluminum electrolytic flue dust, dirty material, adsorbing asphalt and aluminium oxide boiling- bed roasting equipment |
| 11/02/1999 | US5976345 Electrochemical extraction of metals dissolved in a molten electrolyte. |
| 11/02/1999 | US5976333 Collector bar |
| 10/28/1999 | WO1999054526A1 Fused bath electrolysis cell for producing aluminium by hall-heroult process comprising cooling means |
| 10/27/1999 | EP0951586A2 Method and apparatus for metal extraction and sensor device related thereto |
| 10/27/1999 | EP0951572A1 Process for obtaining titanium or other metals using shuttle alloys |
| 10/27/1999 | EP0951337A1 Process for recovering cf 4? and c 2?f 6? from a gas |
| 10/20/1999 | EP0695371B1 Micropyretically-produced components of aluminium production cells |
| 10/19/1999 | US5968334 Process for recovering CF4 and C2 F6 from vent gases of an aluminum production cell |
| 10/05/1999 | US5961812 Process and gaseous effluent-collection device for changing spent anodes of pots for electrolysis of aluminum |
| 10/05/1999 | US5961811 Carbon and a reactive compound capable of suppressing the formation or accumulation of sodium cyanide during operation of the cell and of reacting with one of titanium or zirconium to form titanium or zirconium diboride |
| 09/28/1999 | US5956842 Butt and thimble press |
| 09/23/1999 | CA2266279A1 A method for controlling the feed of alumina to electrolysis cells for production of aluminium |
| 09/22/1999 | CN2339590Y Single-dewatered carnallite melt chloridization dewatering apparatus |
| 09/22/1999 | CN2339587Y Carnallite boiling-dewatering apparatus |
| 09/21/1999 | CA2161541C Treating prebaked carbon anodes for aluminium production |
| 09/21/1999 | CA2122006C Continuous prebaked anode cell |
| 09/14/1999 | US5951843 Method and apparatus for extracting lithium by applying voltage across lithium-ion conducting solid electrolyte |
| 09/01/1999 | EP0938598A1 Cathode construction |
| 08/25/1999 | CN1226612A Molten salt electrolytic cells for producing rare-earth metals and alloys |
| 08/24/1999 | US5942097 Method and apparatus featuring a non-consumable anode for the electrowinning of aluminum |
| 08/24/1999 | CA2188943C Preparation of anhydrous magnesium chloride-containing melts from hydrated magnesium chloride and production of magnesium metal |
| 08/24/1999 | CA2160469C Micropyretically produced components of aluminium production cells |
| 08/19/1999 | WO1999041432A1 METHOD FOR CONTROLLING THE AlF3 CONTENT IN CRYOLITE MELTS |
| 08/19/1999 | WO1999041431A1 Catalytic dissolution of aluminum oxide during electrolytic reduction of alumina |
| 08/19/1999 | WO1999041430A1 Distribution of alumina-rich electrolyte in aluminium electrowinning cells |
| 08/19/1999 | WO1999041429A1 Drained cathode aluminium electrowinning cell with improved alumina distribution |
| 08/19/1999 | CA2318893A1 Drained cathode aluminium electrowinning cell with improved alumina distribution |
| 08/19/1999 | CA2318769A1 Catalytic dissolution of aluminum oxide during electrolytic reduction of alumina |
| 08/19/1999 | CA2285992A1 Method for controlling the aif3 content in cryolite melts |
| 08/18/1999 | EP0759887B1 Preparation of anhydrous magnesium chloride-containing melts from hydrated magnesium chloride and production of magnesium metal |
| 08/17/1999 | US5938914 Electrolytic cell for reducing metal oxide to base metal containing inert anode having inclined covering which diverts evolved oxygen bubbles through molten salt bath to agitate bath and improve metal oxide dissolution |
| 08/12/1999 | WO1999040239A1 Materials for use in electrochemical smelting of metals from ore |
| 08/10/1999 | CA2158794C Injection of alumina into soderberg cells |
| 08/05/1999 | WO1999039027A1 A procedure and equipment for handling carbon bodies and other materials |
| 08/05/1999 | WO1999039026A1 Method for producing magnesium from oxide chloride-containing raw materials |
| 08/04/1999 | EP0932589A2 Slurry and method for producing refractory boride bodies and coatings for use in aluminium electrowinning cells |
| 08/03/1999 | US5932084 Process for producing rare earth metals |
| 07/28/1999 | EP0931182A1 Ultrastable anodes for aluminum production cells |
| 07/22/1999 | WO1999036594A1 Non-carbon metal-based anodes for aluminium production cells |
| 07/22/1999 | WO1999036593A1 Slurry for coating non-carbon metal-based anodes for aluminium production cells |
| 07/22/1999 | WO1999036592A1 Electrocatalytically active non-carbon metal-based anodes for aluminium production cells |
| 07/22/1999 | WO1999036591A1 Surface coated non-carbon metal-based anodes for aluminium production cells |
| 07/22/1999 | CA2317596A1 Electrocatalytically active non-carbon metal-based anodes for aluminium production cells |
| 07/22/1999 | CA2317595A1 Surface coated non-carbon metal-based anodes for aluminium production cells |
| 07/21/1999 | EP0843746B1 Hard and abrasion resistant surfaces protecting cathode blocks of aluminium electrowinning cells |
| 07/21/1999 | EP0675974B1 Electrolysis cell for metal production |
| 07/21/1999 | CN1223696A Metal magnesium electrolyzer |
| 07/20/1999 | CA2176791C Electrolytic production process for magnesium and its alloys |
| 07/14/1999 | EP0783597B1 Stable anodes for aluminium production cells |
| 07/06/1999 | CA2137816C The application of refractory borides to protect carbon-containing components of aluminium production cells |
| 07/06/1999 | CA2123417C Cell for the electrolysis of alumina preferably at low temperatures |
| 07/06/1999 | CA2111329C Composite electrode for electrochemical processing having improved high temperature properties and method for preparation by combustion synthesis |
| 06/30/1999 | CN2326615Y Cathode dismounting device for aluminium electrolytic tank |
| 06/22/1999 | US5914023 Actuator |
| 05/19/1999 | EP0807093B1 Coating composition for a carbonaceous material, and resulting coating |
| 05/18/1999 | US5904828 Anode for electrowinning of aluminum by electrolysis of alumina dissolved in molten fluoride electrolyte compring porous synthesis product of nickel, aluminum, iron, copper, and optional doping elements |
| 05/12/1999 | EP0915187A1 Metal magnesium electrolyzer |
| 05/06/1999 | EP0782636B1 Aluminium electrowinning cell with improved carbon cathode blocks |
| 05/05/1999 | CN1215759A Apparatus for electrolysis deoxidation of solid electrolyte |
| 04/28/1999 | CN2316324Y Anode bus lifting split-flow device for pre-calcining aluminium electrolysing cell |
| 04/15/1999 | WO1999018263A1 Potlining to enhance cell performance in aluminum production |
| 04/15/1999 | CA2305581A1 Potlining to enhance cell performance in aluminum production |
| 04/14/1999 | EP0907402A1 Method of removing, from a stream of gas, fluorinated compounds which contribute to destruction of the ozone layer and/or changes in climate, and use of the method |
| 04/14/1999 | EP0848764B1 Electrolytic method for the production of sodium and aluminium chloride |
| 04/14/1999 | EP0729521B1 Refractory slab joining system |
| 04/07/1999 | CN2312946Y Noval aluminium-liquid mixing furnace |
| 03/31/1999 | EP0905284A1 Aluminium electrowinning cell with drained cathode |
| 03/31/1999 | CN1212296A Process for producing deoxidized aluminium from bauxite material by electrolytic method |
| 03/30/1999 | US5888360 Cathode cell bottom made from carbon cathode blocks connected side by side shaped to form grooves covered by a pool of aluminum forming a drained surface; inter-electrode distance and cell voltage are reduced, energy efficiency increased |
| 03/25/1999 | WO1998049371A9 Apparatus for producing titanium crystal and titanium |
| 03/25/1999 | WO1998049357A9 Titanium crystal and titanium |
| 03/24/1999 | EP0828866B1 Lining for aluminum production furnace |
| 03/23/1999 | US5885539 Gases emitted from aluminum production process is brought in contact with aluminum oxide adsorbent, which can be recycled as a raw material; multistage countercurrent adsorption, desorption for removal of fluorine cotaining gases |
| 03/16/1999 | US5882499 Process for regulating the temperature of the bath of an electrolytic pot for the production of aluminium |