| Patents for C22B 9 - General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals (7,765) |
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| 06/05/1990 | US4930986 Apparatus for immersing solids into fluids and moving fluids in a linear direction |
| 05/23/1990 | EP0368987A1 HIGH PURITY Zr AND Hf METALS AND THEIR MANUFACTURE |
| 05/22/1990 | US4927460 Induction melting and stirring |
| 05/16/1990 | CN1042189A Treatment of molten light metals |
| 05/15/1990 | US4926439 Process for preventing contamination of high temperature melts |
| 05/09/1990 | EP0366701A1 Magnesium production. |
| 05/09/1990 | CN1041975A Process for making molten materials and self-consuming electrode therefor |
| 05/08/1990 | US4923830 Ceramic bodies formed from partially stabilized zirconia |
| 05/08/1990 | US4923531 Deoxidation of titanium and similar metals using a deoxidant in a molten metal carrier |
| 05/03/1990 | WO1990004043A3 Method of producing titanium |
| 05/02/1990 | CN1007824B Apparatus for degassing molten metal |
| 05/01/1990 | US4921616 Alveolar ceramic filters for high melting metals |
| 04/30/1990 | CA2001432A1 Process for recovering gold from refractory sulfidic ores |
| 04/25/1990 | EP0364724A1 Gas washing device |
| 04/25/1990 | EP0364723A1 Gas bubbling device |
| 04/25/1990 | EP0264385B1 Injection of substances into high temperature liquids |
| 04/25/1990 | CN1041617A Gas bubbling device |
| 04/25/1990 | CN1041616A Gas bubbling brick |
| 04/25/1990 | CN1041615A Gas bubbling device |
| 04/24/1990 | US4919712 Control of progressive melting of consumable electrode by cooling surface before immersion, maintaining concave shape of tip within slag |
| 04/19/1990 | WO1990004043A2 Method of producing titanium |
| 04/18/1990 | EP0363749A1 Process for dephosphorizing molten metals by treating with alkali metals and alkaline earth metals |
| 04/18/1990 | EP0363651A1 Gas purging brick |
| 04/17/1990 | US4917728 Adding liquid alloying material; heat treatment |
| 04/12/1990 | DE3931656A1 Dephosphorising ferrous melts - by blowing with mixt. of alkaline earth alkali metal and corresp. halide followed by oxygen treating |
| 04/11/1990 | EP0362851A2 Method for cleaning molten metal |
| 04/11/1990 | EP0362253A1 Process for treating liquid metals |
| 04/10/1990 | US4916028 High strength structure |
| 04/04/1990 | CN1007433B Process for removing impure element from pig iron, steel, other metals and alloys |
| 04/03/1990 | US4913735 Gaseous coolant circulation system to minimize flux buildup in injector |
| 03/27/1990 | US4911905 Method of forming stoichiometric II-VI compounds of high purity |
| 03/27/1990 | US4911414 Sealing injection apparatus for injecting substances into molten metals |
| 03/22/1990 | DE3830540A1 Process for removing impurities from AlSi casting alloys |
| 03/21/1990 | EP0359052A1 Gas flushing brick equipment for metallurgical melting melting vessels. |
| 03/21/1990 | EP0312549B1 Fire-proof ceramic component |
| 03/20/1990 | US4909836 Apparatus and a method for improved filtration of inclusions from molten metal |
| 03/14/1990 | EP0358361A2 Thermite coatings |
| 03/14/1990 | EP0243384B1 Device for filtering molten metals |
| 03/13/1990 | US4908060 Dispersing gas in molten metal by use of rotating device so that metal enters manifold through open end, supplying gas to shaft so that it enters manifold forming dispersion |
| 03/13/1990 | US4907784 Apparatus for successively fusing small particles of nonferrous metal |
| 03/08/1990 | WO1990002209A1 Process for producing high purity magnesium |
| 03/07/1990 | EP0356943A1 Wear resistant metallurgical tuyere |
| 03/07/1990 | EP0267197B1 Melting and holding furnace |
| 03/06/1990 | US4906291 Method for manufacturing melt materials of copper, chromium, and at least one readily evaporable component using a fusible electrode |
| 03/06/1990 | US4906290 Microwave irradiation of composites |
| 02/22/1990 | DE3827074A1 Verfahren und vorrichtung zur vermeidung der verdampfverluste von legierungselementen beim elektronenstrahlschmelzen A method and apparatus for preventing the verdampfverluste of alloying elements during electron beam melting |
| 02/13/1990 | US4900357 Injection of substances into high temperature liquids |
| 02/13/1990 | US4899992 Devices and apparatus for injecting gas into high temperature liquids, e.g. molten metals |
| 02/08/1990 | WO1990001213A1 High capacity electron beam cold hearth furnace |
| 02/07/1990 | CN1006681B Filtration apparatus |
| 02/06/1990 | US4898369 Lance with metered core for treating molten metal |
| 02/06/1990 | US4898368 Wear resistant metallurgical tuyere |
| 02/06/1990 | US4898367 Dispersing gas into molten metal |
| 01/31/1990 | EP0185696B1 Testing of liquid melts and probes for use in such testing |
| 01/30/1990 | US4897116 High purity Zr and Hf metals and their manufacture |
| 01/30/1990 | US4897115 Method of, purifying a melt, which, besides one or more impurities, essentially contains a light metal, in particular aluminum |
| 01/25/1990 | WO1990000627A1 Cold hearth refining apparatus and method |
| 01/24/1990 | CN1039106A Apparatus for stirring molten metal |
| 01/24/1990 | CN1039064A Process for purification of gallium by partial solidification |
| 01/24/1990 | CN1039061A Steel-smelting process from steel scrap |
| 01/24/1990 | CN1006531B One step electroslag melt-casting process for integral crankshaft and equipment used |
| 01/23/1990 | US4895594 Or pig iron, sub-stoichiometric burners, combustion, discharging, ladles, tapholes, preferential, rotation |
| 01/23/1990 | US4895592 High purity sputtering target material and method for preparing high purity sputtering target materials |
| 01/23/1990 | CA1264545A1 Multiple-use molten metal filters |
| 01/23/1990 | CA1264544A1 Ceramic filter and method for using same |
| 01/16/1990 | US4893792 Cold trap |
| 01/09/1990 | US4892631 Recovery of precious metals from complex ores |
| 01/03/1990 | EP0349449A1 Process for purifying gallium by partial solidification |
| 01/03/1990 | EP0349167A2 Method of desulfurizing molten metal in a plasma fired cupola |
| 01/03/1990 | CN2050410U Pneumatic powders conveyer |
| 01/03/1990 | CN1006302B Decontamination plant on the metallurgical revolving furnace |
| 01/02/1990 | US4891822 Inductor apparatus for metal treatment |
| 01/02/1990 | US4891066 Highly pure titanium |
| 01/02/1990 | US4891065 Process for producing high purity magnesium |
| 12/27/1989 | EP0348037A1 Apparatus for stirring molten metal |
| 12/20/1989 | EP0347351A1 Process for treating molten steels by the injection of gas through the bottom of the ladle |
| 12/20/1989 | EP0347108A1 Treatment of molten light metals |
| 12/19/1989 | US4888051 Method for the zone refining of gallium |
| 12/14/1989 | DE3901926C1 Gas bubble device |
| 12/05/1989 | US4885263 Impregnating polymer foam with aqueous slurry of silicon carbide and silica binder |
| 12/05/1989 | US4884625 Method of the plasma jet remelting of a surface layer of a flat metal work having parallel side edges and apparatus for carrying out the method |
| 12/05/1989 | CA1263540A1 Oxidation leaching |
| 11/30/1989 | WO1989011449A1 HIGH PURITY Zr AND Hf METALS AND THEIR MANUFACTURE |
| 11/30/1989 | DE3905080C1 Ceramic filter for filtering metal melts |
| 11/29/1989 | EP0344092A2 Thermal treatment installation for molten metal |
| 11/23/1989 | EP0343012A2 Magnesium-calcium alloys for debismuthizing lead |
| 11/22/1989 | CN1037290A Electro-slag casting apparatus and method |
| 11/16/1989 | WO1989010791A1 Depressant for flotation separation of polymetallic sulphidic ores |
| 11/16/1989 | DE3815663A1 Gas bubble brick for metallurgical vessels |
| 11/15/1989 | CN1037175A Rotary device, apparatus and method for treating molten metal |
| 11/14/1989 | US4881239 Fault detection during remelt of electrodes into blocks |
| 11/14/1989 | US4880541 Hot filter media |
| 11/07/1989 | US4878654 Method for cooling gases and/or vapors from non-ferrous metal treatment plants, and the relative apparatus |
| 11/07/1989 | CA1262636A1 Pre-refining treatment of metals and alloys |
| 11/07/1989 | CA1262634A1 Process for the removal of contaminating elements from pig-iron, steel, other metals and metal alloys |
| 11/02/1989 | EP0339644A1 Method for refining silicon metal and ferrosilicon alloys |
| 10/31/1989 | US4877517 Using crosslinked starch, polyacrylate, and lignin sulfonate |
| 10/31/1989 | US4877449 Vertical shaft melting furnace and method of melting |
| 10/31/1989 | US4877448 Process for recovery of free aluminum from aluminum dross or aluminum scrap using plasma energy |
| 10/26/1989 | DE3831726C1 Process for producing a moulded brick in the shape of a truncated cone for gas bubble bricks |