| Patents for C22B 4 - Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys (1,486) |
|---|
| 03/21/1989 | US4814003 To vaporize or melt metals |
| 03/14/1989 | US4811782 Injection of metals as plasma into cast iron and steel melts |
| 03/01/1989 | EP0305131A2 A process for the recovery of gold |
| 02/22/1989 | CN1031259A Method of smelting ferrosilicon |
| 02/21/1989 | US4806325 Plasma arc furance |
| 01/31/1989 | US4801435 Low temperature for treatment of particulate material |
| 01/26/1989 | WO1989000613A1 Magnesium production |
| 01/17/1989 | CA1248761A1 Alloying system |
| 12/14/1988 | CN88103911A Method and apparatus for carrying out thermochemical process |
| 12/01/1988 | WO1988009390A1 Process and device for implementing hot chemical processes |
| 12/01/1988 | WO1988009388A1 Process for treating liquid metals |
| 11/23/1988 | EP0292469A1 Process and apparatus for high-temperature chemical operations |
| 11/22/1988 | US4786320 Method and apparatus for removal of gaseous, liquid and particulate contaminants from molten metals |
| 11/01/1988 | US4781755 Pyrometallurgy, plasma jets |
| 10/25/1988 | US4780132 Producing iron from scrap iron; controlling gas flow rate |
| 08/23/1988 | US4765828 Introducing feedstock material into plasma torch reactor according to two different flow patterns |
| 08/16/1988 | CA1240520A1 Apparatus and process for reduction of metal oxides |
| 07/05/1988 | CA1238789A1 Process for the extraction of platinum group metals |
| 06/23/1988 | EP0259459A4 Powder atomizing methods and apparatus. |
| 05/17/1988 | US4745338 For refining raw material |
| 03/16/1988 | EP0259459A1 Powder atomizing methods and apparatus. |
| 03/09/1988 | CN87101579A Production of ferroboron directly from boron-magnesium-iron ore |
| 02/02/1988 | CA1232140A1 Process for producing magnesium |
| 01/27/1988 | EP0254711A1 Method for producing copper |
| 01/20/1988 | CN87104601A High-purity silicon iron and its preparation method |
| 01/19/1988 | US4720300 Process for producing niobium metal of an ultrahigh purity |
| 12/15/1987 | US4713180 Open-celled foam structure of silicon carbide, silica, alumina and refractory inorganic binder |
| 12/02/1987 | EP0247354A1 Process for the adduction of metal elements in metal foundings |
| 11/11/1987 | CN86106257A Plasma carbothermic method for producing molybdenum iron |
| 10/13/1987 | US4699653 Thermal production of magnesium |
| 09/24/1987 | WO1987005548A1 Powder atomizing methods and apparatus |
| 08/11/1987 | US4685963 Process for the extraction of platinum group metals |
| 06/23/1987 | US4675048 Electrothermal process and plant for the separation and refining of metal from waste |
| 04/21/1987 | CA1220630A1 Method of producing copper-chromium fusion alloys as contact material for vacuum power switches |
| 04/07/1987 | US4655437 Vertical shaft with plasma arc that melts and vaporizes |
| 03/31/1987 | US4654076 Smelting |
| 02/26/1987 | WO1987001137A1 Method and device for treatment of melt |
| 01/17/1987 | CN85101474A Continuous casting furnace and method of continuously mfg. cast product |
| 01/14/1987 | EP0208644A1 Electrothermal process for the separation and refining of metals starting from recuperation products |
| 12/23/1986 | CA1215677A1 Method of producing metals or metal alloys and an arrangement therefor |
| 12/10/1986 | EP0204298A2 Process for producing niobium metal of an ultrahigh purity |
| 11/18/1986 | US4623386 Energy efficient |
| 11/18/1986 | CA1214192A1 Plasma melting furnace with other added gas streams |
| 11/12/1986 | CA1213928A Method of carrying out metallurgical or chemical processes in a shaft furnace, and a low shaft furnace therefor |
| 11/12/1986 | CA1213849A Method and device for treating and refining liquid metal alloys by direct current electric arc heating |
| 10/14/1986 | US4617671 Arrangement for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
| 09/09/1986 | US4611332 Transferred electric arc |
| 09/03/1986 | CN85103967A Smelting of rare earth fine ore briquettes (or lumps) to prepare rare earth fine slag and niobium ferric phosphorate |
| 08/19/1986 | US4606760 Method and apparatus for simultaneously separating volatile and non-volatile metals |
| 04/23/1986 | CN85202709U Line-frequency induction heated furnace for low-pressure casting |
| 03/25/1986 | US4577838 Material processing apparatus |
| 03/05/1986 | EP0173425A1 Process for the extraction of platinum group metals |
| 02/25/1986 | US4572736 Stoichiometric conversion of magnesia with carbon at high temperat |
| 02/18/1986 | US4571259 Apparatus and process for reduction of metal oxides |
| 02/11/1986 | CA1200393A1 Method of manufacturing ferrosilicon |
| 01/21/1986 | US4565571 Method for producing low density porous metals or hollow metallic spheres |
| 01/21/1986 | CA1199498A1 Production and treatment of ferrochromium |
| 01/07/1986 | CA1198899A1 Method of, and arrangement for, reducing oxide- containing fine-particle ores |
| 12/31/1985 | US4561883 Method of producing metals or metal alloys and an arrangement therefor |
| 08/27/1985 | US4537745 Method of producing copper-chromium fusion alloys as contact material for vacuum power switches |
| 08/06/1985 | US4533385 Method for producing metals, such as molten pig iron, steel pre-material and ferroalloys |
| 07/03/1985 | EP0146986A2 Process for producing magnesium |
| 07/02/1985 | US4526612 Injecting silica containing and iron containing starting materials into plasma in reaction chamber surrounded by solid reducing agent, melting silica and reducing to silicon to react with iron |
| 05/28/1985 | US4519835 Transferred-arc plasma reactor for chemical and metallurgical applications |
| 05/21/1985 | US4518419 Method of carrying out metallurgical or chemical processes in a shaft furnace, and a low shaft furnace therefor |
| 05/21/1985 | US4518417 Method of, and arrangement for, reducing oxide-containing fine-particle ores |
| 04/24/1985 | EP0138100A2 Process for manufacturing active carbon-rich masses or bodies |
| 03/20/1985 | EP0134780A2 Process for preparing metals or alloys and apparatus therefor |
| 03/12/1985 | US4504307 Method for carrying out melting, melt-metallurgical and/or reduction-metallurgical processes in a plasma melting furnace as well as an arrangement for carrying out the method |
| 01/16/1985 | EP0131160A2 Non plugging falling film plasma reactor |
| 12/18/1984 | US4489041 Radiation barrier |
| 12/18/1984 | US4488905 Method of recovering volatile metals from material containing metal oxides |
| 12/11/1984 | US4487628 Selective reduction of heavy metals |
| 10/02/1984 | CA1175240A1 Process for the recovery of metals from their ores |
| 09/25/1984 | CA1175086A1 Transferred electric arc |
| 09/25/1984 | CA1174855A1 Method of producing molten metal consisting mainly of manganese and iron |
| 09/19/1984 | EP0118655A2 Method of carrying out metallurgical or chemical processes, and a low-shaft furnace |
| 09/12/1984 | EP0118412A2 Method of carrying out melting, melt-metallurgical and/or reduction-metallurgical processes in a plasma melting furnace as well as an arrangement for carrying out the method |
| 09/04/1984 | CA1173784A1 Transferred-arc plasma reactor for chemical and metallurgical applications |
| 08/21/1984 | US4466824 Transferred-arc plasma reactor for chemical and metallurgical applications |
| 08/15/1984 | EP0115756A1 A method and arrangement for producing metals, in particular molten pig iron, steel pre-material or ferroalloys |
| 08/08/1984 | EP0115292A2 Process for manufacturing copper-chromium alloys by melting, for use as contact material in vacuum power switches |
| 07/31/1984 | US4462878 Electrolysis of melt surface |
| 07/31/1984 | CA1171897A1 Means for transporting/rotating the pot of a smelting furnace |
| 06/12/1984 | US4454013 Method of separating iron and its alloy metals from fine-grained crude oxidic products |
| 05/08/1984 | CA1166874A1 Production of yttrium |
| 04/10/1984 | US4441921 Production and treatment of ferrochromium |
| 01/11/1984 | EP0097993A1 Process for producing an aluminium-silicon alloy from leucite |
| 10/18/1983 | US4410358 Plasma recovery of tin from smelter dust |
| 08/31/1983 | EP0087405A1 Process and device for the reduction of particle-sized ores containing oxide |
| 07/26/1983 | CA1150518A1 Recovering non-volatile metals from dust containing metal oxides |
| 07/19/1983 | US4394162 Alloying, benefication |
| 06/07/1983 | CA1147558A1 Method of recovering volatile metals from material containing metal oxides |
| 05/24/1983 | CA1146759A1 Method of manufacturing stainless steel |
| 04/28/1983 | WO1983001461A1 Process for the production of ferrochromium |
| 04/05/1983 | CA1144104A1 Treatment of matter in low temperature plasmas |
| 03/08/1983 | US4375960 Means for transporting/rotating the pot of a smelting furnace |
| 02/09/1983 | EP0071351A1 A transferred-arc plasma reactor for chemical and metallurgical applications |
| 11/30/1982 | US4361441 Treatment of matter in low temperature plasmas |
| 10/26/1982 | US4356029 Alkali(ne earth) metal reactant, projecting, melting, blowing, dropping |