| Patents for C22B 5 - General processes of reducing to metals (5,378) |
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| 08/10/1988 | CN87107197A Process and apparatus for recovering metal and metal alloy |
| 08/09/1988 | US4763337 Process for melting particulate material |
| 08/09/1988 | CA1240155A1 Thermal reduction process for production of calcium using aluminum as a reductant |
| 08/09/1988 | CA1240154A1 Metallothermic reduction of rare earth oxides |
| 08/03/1988 | CN87100487A Blast furnace smelting for lead-tin paragenetic mineral |
| 08/02/1988 | CA1239798A1 Process for recovering valuable metals from an iron dust containing a higher content of zinc |
| 07/27/1988 | EP0276032A1 Instant smelting process for sulfidic ores |
| 07/27/1988 | EP0275863A1 Method and apparatus for reclaiming metal values from electric arc furnace flue dust and sludge and rendering residual solids recyclable or non-hazardous |
| 07/19/1988 | US4758268 Method and apparatus for reclaiming metal values from electric arc furnace flue dust and sludge and rendering residual solids recyclable or non-hazardous |
| 07/12/1988 | US4756748 Processes for the smelting reduction of smeltable materials |
| 07/06/1988 | EP0273835A1 Metallothermal process for the manufacture of pure alloys based on rare earth metals and transition metals |
| 06/30/1988 | DE3743096A1 Chlorierung metallurgischer zusammensetzungen Chlorination metallurgical compositions |
| 06/29/1988 | CN87108130A Chlorination of metallurgical composites |
| 06/22/1988 | EP0272250A1 Process for the production of neodym alloys |
| 06/21/1988 | US4752331 Magnesium reducing agent; separating formed magnesium chloride |
| 06/14/1988 | US4751070 Low temperature synthesis |
| 06/01/1988 | EP0269604A2 Process and furnace for smelting fines, in particular metal or metal-oxide dusts |
| 05/24/1988 | CA1236982A1 Reforming of higher hydrocarbons |
| 05/18/1988 | CN87107202A Recovering method and equipment for metal and alloy |
| 05/11/1988 | EP0266975A1 Smelting reduction |
| 05/11/1988 | DE3638204A1 Process and equipment for the smelting of fusible materials such as ore concentrate, utilising unspent reducing gas from the top-blowing process in the melting cyclone |
| 05/11/1988 | DE3636661A1 Process for reducing metal oxides and plant for carrying out the process |
| 05/05/1988 | DE3735966A1 Process for winning metals or metal alloys and also plant for carrying out the process |
| 05/05/1988 | DE3735965A1 Process for winning metals or metal alloys and also plant for carrying out the process |
| 04/27/1988 | EP0265413A2 Process for the manufacture of rare-earth metals and of alloys containing rare-earth metals |
| 04/26/1988 | US4740240 Oxidation, gasification, reduction |
| 04/26/1988 | US4740239 Controlled reduction in rotary kiln |
| 04/12/1988 | US4737186 Using carbon dust |
| 04/12/1988 | CA1234992A1 Method of manufacturing metals and/or generating slag |
| 04/05/1988 | US4735654 Process for reduction of metal compounds by reaction with alkaline earth metal aluminide |
| 04/05/1988 | CA1234696A1 Metallurgical process iii |
| 03/29/1988 | US4734129 Oxidizing lead to form lead oxide slag |
| 03/29/1988 | CA1234496A1 Process for combination metal reduction and distillation |
| 03/23/1988 | EP0261042A1 Process and apparatus for producing zirconium metal by reducing zirconium tetrachloride |
| 03/22/1988 | US4732368 Apparatus for the pyrometallurgical treatment of finely divided materials |
| 03/10/1988 | DE3629661A1 Method for carrying out reductive pyrometallurgical processes with pellets of oxide ores, concentrates or intermediates and also metallic intermediates by means of strongly reducing gases or oxygen-containing gases for the production and refining of a molten metal |
| 02/16/1988 | US4725312 Production of metals by metallothermia |
| 02/09/1988 | US4724054 Process for production of aluminum and alkaline earth metal by carbothermic production of alkaline earth metal aluminide and reduction of aluminum and alkaline earth metal in electrolytic reduction cell |
| 02/02/1988 | US4722827 Zirconium and hafnium with low oxygen and iron |
| 02/02/1988 | US4722756 Method for deoxidizing tantalum material |
| 02/02/1988 | CA1232140A1 Process for producing magnesium |
| 02/02/1988 | CA1232133A1 Reheating process of blower gas for a blast furnace by means of a plasma generator |
| 01/26/1988 | CA1231839A1 Reduction process for forming powdered alloys from mixed metal iron oxides |
| 12/15/1987 | US4713110 Reducing salts with magnesium and catalyst |
| 11/24/1987 | US4708190 Treating metals and/or metallic compounds |
| 11/24/1987 | CA1229488A1 Method and apparatus for the pyrometallurgical treatment of finely granular solids which, at the treatment temperatures, yield molten products |
| 11/10/1987 | US4705562 Method for working-up waste products containing valuable metals |
| 10/27/1987 | CA1228482A1 Reduction of metal compounds |
| 10/20/1987 | US4701217 Smelting reduction |
| 10/14/1987 | CN87102206A Metal thermal reduction for rare earth cloride |
| 10/13/1987 | US4699653 Thermal production of magnesium |
| 09/29/1987 | US4696457 Means for charging liquid slag to a closed smelting furnace |
| 09/23/1987 | EP0238185A1 Metallothermic reduction of rare earth chlorides |
| 09/23/1987 | EP0237587A1 Method for producing a rare earth alloy and rare earth alloy |
| 09/22/1987 | US4695447 Destruction of inorganic hazardous wastes |
| 09/09/1987 | EP0236221A1 Process for lithiothermically producting metallic powders |
| 09/01/1987 | CA1226135A1 Apparatus for preparing high-melting-point high- toughness metals |
| 08/25/1987 | US4689076 Pulverization of coal by collisions |
| 08/18/1987 | US4687647 Conversion of molybdenite to molybdenum dioxide using petroleum or coal tar pitches |
| 08/18/1987 | US4687632 Using a metal reducing agent |
| 08/04/1987 | US4684401 From chlorides; two-step reduction |
| 08/04/1987 | US4684399 Tantalum powder process |
| 07/29/1987 | CN87100348A Method for manufacture of mo-iron from mo ore |
| 07/21/1987 | US4681623 Process for producing alloy powder containing rare earth metals |
| 07/14/1987 | US4680055 Metallothermic reduction of rare earth chlorides |
| 07/14/1987 | CA1224048A1 Process of continuously treating an alloy melt |
| 07/07/1987 | US4678647 Process for the recovery of gallium and germanium from coal fly ash |
| 07/02/1987 | DE3546261A1 Reduction of ores, with simultaneous gas generation |
| 06/10/1987 | CN86107703A Method for melting and reducing chrome ore |
| 06/10/1987 | CN85102966A Combined smoke furnace |
| 06/03/1987 | EP0224239A2 Process for preparing finely divided metal powders |
| 06/02/1987 | US4670048 Method for heating the reducing gas of a blast furnace by means of a plasma generator |
| 05/26/1987 | US4668287 From tetrachlorides, magnesium, magnesium, chloride, linings, drains, sealing, melts |
| 05/20/1987 | EP0222452A1 Process for reducing the oxidation level of metallic oxides |
| 05/20/1987 | EP0222397A2 Method for melting and reducing chrome ore |
| 05/19/1987 | US4666132 Method and apparatus for the pyrometallurgical treatment of fine grained solids to produce molten products |
| 05/19/1987 | US4665842 Apparatus for producing ignitable solids-gas suspensions |
| 05/06/1987 | EP0220198A1 Preparing metal compounds by pyrolysis. |
| 05/05/1987 | US4662613 Spiral exchange mass; replacement metal particles of high electromotive force |
| 04/23/1987 | DE3539164C1 Process and smelting furnace for producing non-ferrous metals |
| 04/21/1987 | US4659376 Fluid bed reduction to produce molybdenum metal |
| 04/21/1987 | US4659374 Coal tar pitch, asphalt, petroleum pitch with lignosulfonate salts, carbohydrates or silicates; high strength |
| 04/21/1987 | CA1220631A1 Continuous copper smelting and converting in a single furnace by oxygen injection |
| 04/14/1987 | CA1220381A1 Feeder for pulverized coal |
| 04/14/1987 | CA1220349A1 Thermal reduction process for production of magnesium using aluminum skim as a reductant |
| 04/14/1987 | CA1220325A1 Process and apparatus for obtaining silicon from fluosilicic acid |
| 04/07/1987 | US4655437 Vertical shaft with plasma arc that melts and vaporizes |
| 04/07/1987 | CA1220091A1 Furnace by combustion of pulverized coal |
| 04/01/1987 | CN85107124A Method for directly extracting metal tin from low-grade tin ore |
| 03/31/1987 | US4654077 Recovering metals from slags and ores |
| 03/24/1987 | US4652307 Refining and/or alloying of a 3 percent to 6 percent carbon iron, cobalt, or nickel on a molten silver surface at temperatures 1000°C° C. producing an iron cobalt or nickel powder, or their alloys and a petroleum product |
| 03/18/1987 | EP0214268A1 A method for working-up waste products containing valuable metals. |
| 03/17/1987 | CA1219121A1 Method for recovering heat from dust-bearing gases produced in smelting sulphide concentrates and means hereof |
| 03/04/1987 | CN85106114A Smelting process for recovering metals from non-ferrous metal oxide ores or concentrates and/or from fine-grained non-ferrous metal sulfide ores or concentrates |
| 03/03/1987 | CA1218523A1 Apparatus for preparing high melting point high toughness metals |
| 02/25/1987 | CN85106006A Super-heated steam method of treating chromium slag |
| 02/24/1987 | US4645186 Apparatus for processing sulphide concentrates and sulphide ores into raw material |
| 02/24/1987 | CA1218238A1 Method of processing sulphide copper and/or sulphide copper-zinc concentrates |
| 01/31/1987 | CN85101709A Method and plant for reducing oxidic material while simultaneously generating a gas suitable as fuel gas |
| 01/22/1987 | DE3525160A1 Pyrometallurgical furnace installation for smelting fusible materials such as ore concentrate |