| Patents for C22B 21 - Obtaining aluminium (4,001) |
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| 12/14/1982 | CA1137309A1 Apparatus for refining molten aluminum |
| 12/09/1982 | WO1982004267A1 Aluminum smelting furnace with waste tire or the like as fuel |
| 12/01/1982 | EP0065854A2 Removal of alkali metals and alkaline earth metals from molten aluminium |
| 11/02/1982 | US4357004 Apparatus for refining molten metal |
| 10/26/1982 | CA1134337A1 Method and apparatus for processing dross |
| 10/26/1982 | CA1134149A1 Moving bed chlorination of bauxite and ilmenite |
| 10/19/1982 | US4354869 Process for purging aluminum and aluminum alloy melts of small quantities of alkali and alkaline earth metals |
| 10/14/1982 | WO1982003339A1 Ceramic filter, method for manufacturing and utilizing this filter |
| 10/12/1982 | US4353532 Aluminum melting furnace |
| 09/29/1982 | EP0061411A1 Process for precisely and continuously injecting a gaseous halide compound into a liquid metal |
| 09/14/1982 | USRE31028 Roller milling; recovering aluminum |
| 09/07/1982 | CA1130980A1 Method for the filtration of molten metal |
| 09/01/1982 | EP0058922A1 Metallurgical process for treating silicon-aluminous-alkaline ores, in particular leucitic ores |
| 09/01/1982 | EP0058812A2 Porous ceramic filter and process for producing the same |
| 08/31/1982 | CA1130574A1 Method and apparatus for the removal of impurities from molten metal |
| 08/18/1982 | EP0057965A1 Molten metal sampling device |
| 08/17/1982 | CA1129656A1 Process for the treatment of aluminum-salt slags |
| 08/10/1982 | US4343704 Ceramic foam filter |
| 08/03/1982 | US4342664 Molten metal filter |
| 07/20/1982 | CA1127852A1 Apparatus and method for removal of alkali and alkaline earth metals from molten aluminium |
| 07/20/1982 | CA1127851A1 Carbothermic production of aluminium |
| 07/06/1982 | US4338124 Treatment with carbon dioxide in carrier gas |
| 07/06/1982 | US4337929 Rotary furnace for melting metal |
| 07/06/1982 | US4337900 Method of recovery of aluminum from waste material |
| 07/06/1982 | CA1126962A1 Carbothermic production of aluminium |
| 06/29/1982 | CA1126887A1 Red mud treatment |
| 06/15/1982 | US4334917 Carbothermic reduction furnace |
| 06/10/1982 | WO1982001895A1 Metal recovery process and dross collection receptacle |
| 05/18/1982 | US4330090 Method for wrought and cast aluminum separation |
| 05/11/1982 | CA1123207A1 Method and apparatus for the filtration and degassing of molten metal |
| 05/05/1982 | EP0050795A1 Method and apparatus for reclaiming metals from metallic scrap material |
| 04/28/1982 | EP0050578A1 Apparatus for the treatment of a molten metal bath by gas injection |
| 04/20/1982 | US4325539 Device for treating a molten metal or alloy using liquid and solid flux |
| 04/13/1982 | US4324585 Formation of aluminum bromide from bauxite, decomposition to aluminum monobromide which is separated and disproportionated |
| 04/13/1982 | CA1121604A1 Fractional crystallization process |
| 04/06/1982 | CA1121162A1 Method and arrangement for carbothermic production of aluminum |
| 04/06/1982 | CA1121118A1 Method and apparatus for treating aluminous metal skim material and by-products of said method |
| 03/30/1982 | US4322245 Method for submerging entraining, melting and circulating metal charge in molten media |
| 03/16/1982 | US4320098 Aluminum sulfate manufacture from aluminum dross tailings |
| 03/16/1982 | US4319921 Heat recovery and melting system for scrap metals |
| 03/16/1982 | CA1120085A1 Continuous treatment of molten metals |
| 03/09/1982 | CA1119415A1 Process for the production of aluminium |
| 03/02/1982 | US4317679 Method and apparatus for the degassing of molten metal |
| 02/09/1982 | US4314846 Ascending carbon to reduce descending metal vapors |
| 01/26/1982 | US4312695 Method and apparatus for everting a closure and separating a liner therefrom |
| 01/05/1982 | CA1115489A1 Method of processing aluminous ores |
| 12/29/1981 | CA1115064A1 Recovery of aluminum and other metal values from fly ash |
| 12/23/1981 | EP0042196A1 Apparatus for refining molten metal |
| 11/24/1981 | US4302502 Filters for molten metal |
| 11/10/1981 | US4299619 Energy efficient production of aluminum by carbothermic reduction of alumina |
| 11/03/1981 | US4298187 Apparatus for inline degassing and filtration of molten metal |
| 10/28/1981 | EP0038608A1 Apparatus for refining molten metal |
| 10/20/1981 | US4295884 Process for treating a molten metal or alloy using liquid and solid flux |
| 10/13/1981 | US4294612 Purification of aluminum |
| 09/29/1981 | US4292282 Process for recovering metals from catalysts for the hydrodesulfurization of hydrocarbons |
| 09/29/1981 | CA1109681A1 Process for the production of aluminium |
| 09/29/1981 | CA1109680A1 Process for the production of aluminium |
| 09/22/1981 | US4290590 Apparatus for sparging molten metal by gas injection |
| 09/22/1981 | US4290588 Apparatus for refining molten aluminum |
| 09/16/1981 | EP0035826A1 Recovery of coated aluminium scrap |
| 09/15/1981 | US4289735 Reduction and chlorination of alumina in fluidized bed in presence of solid diluent |
| 09/08/1981 | US4288414 Process for chlorinating clays and bauxite |
| 09/08/1981 | US4288246 Immersion in molten bath of cryolite, aluminum fluoride, sodium and potassium chloride |
| 09/08/1981 | US4287755 Probes for the ultrasonic treatment or inspection of molten aluminum |
| 09/08/1981 | CA1108412A1 Method and apparatus for sparging molten metal by gas injection |
| 09/01/1981 | US4286985 For ingesting and melting scrap metal |
| 08/26/1981 | EP0034579A1 Process and apparatus for treating dross and liquid scum |
| 08/26/1981 | EP0034434A1 Process for removing metal values from oxidic materials |
| 08/18/1981 | CA1107078A1 Thermal reduction process of aluminum |
| 08/11/1981 | CA1106600A1 Gas-dynamic stirring of liquid molten metals |
| 07/28/1981 | CA1105712A1 Controlled carbo-chlorination of kaolinitic ores |
| 07/21/1981 | CA1105265A1 Method for the removal of organic substances from alkali metal aluminate solution |
| 07/14/1981 | CA1104833A1 Removal of magnesium from an aluminum alloy |
| 07/07/1981 | US4277446 Removal of iron and titanium minerals from aluminum bearing materials by chlorination and beneficiation |
| 07/07/1981 | US4277280 Apparatus and method for removal of alkali and alkaline earth metals from molten aluminium |
| 06/30/1981 | US4275847 Alkyl ether amines as flotation agents |
| 06/30/1981 | CA1103938A1 Skim removal |
| 06/30/1981 | CA1103934A1 Method of reducing the sodium content in aluminium and aluminium alloys |
| 06/16/1981 | US4273627 Electrolytically transported from alloy melt, removing magnesium with carbon, fractional crystallization |
| 06/10/1981 | EP0030067A1 Process for the extraction of metal ions |
| 06/10/1981 | EP0030060A1 Process and apparatus for automating a vacuum degassing stage of aluminium alloys |
| 06/10/1981 | EP0029879A2 Process and apparatus for the thermal recovery of metallic carbides or metals |
| 06/03/1981 | EP0029802A1 Ceramic filter with foamy structure for the filtration of molten metals |
| 06/02/1981 | CA1102120A1 Apparatus for the filtration of molten metal in a crucible type furnace |
| 05/05/1981 | US4265716 Disproportionation of aluminum sulfide formed over carbon reducing agent |
| 05/05/1981 | US4265659 Ceramic open-cell foam with dispersed ceramic fibers |
| 05/05/1981 | US4265432 Degassing molten metals |
| 04/28/1981 | US4264060 Apparatus for treating metallic scrap in the recovery of metal therefrom |
| 04/28/1981 | US4264057 Process and device for increasing the useful life of gas scavenging lances with porous graphite flush heads |
| 04/28/1981 | US4263843 Method and apparatus for controlled removal of excess slurry from organic foam |
| 04/21/1981 | CA1099507A1 Method and apparatus for treating metallic scrap in the recovery of metal therefrom |
| 04/15/1981 | EP0027052A1 Process for purifying aluminum |
| 04/14/1981 | US4261746 Secondary recovery of aluminum which minimizes amount of chloride in slag |
| 04/14/1981 | US4261736 Prevention of formation of aluminum oxycarbide by maintaining hightemperature |
| 03/31/1981 | CA1098496A1 Recovery of aluminum from aluminum-glass cloth residues |
| 03/24/1981 | US4257810 With a open-cell structure for use as filters in the purification of molten metals |
| 03/19/1981 | WO1981000768A1 Probes for the ultrasonic treatment or inspection of molten aluminum |
| 03/17/1981 | CA1097504A1 Carbothermic reduction process |
| 03/03/1981 | US4254088 Selective extraction from acid solution |
| 02/24/1981 | US4252777 Recovery of aluminum and other metal values from fly ash |