| Patents for C22B 7 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof (11,341) |
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| 06/17/1993 | CA2084138A1 Method of producing metal melts and an electric arc furnace therefor |
| 06/10/1993 | WO1993011269A1 Method and composition for use in recycling metal containing furnace dust |
| 06/09/1993 | EP0545766A1 Ferruginous coolant producing method for steel making in converters and so produced coolant |
| 06/08/1993 | US5217171 Method for processing scrap of electronic instruments |
| 06/02/1993 | CN1021058C Technology of processing chromium slag by vacuum reducing for obtaining variable kinds of products |
| 05/27/1993 | WO1993006952A3 Process for removing heavy metals from soils |
| 05/19/1993 | EP0542404A1 Detoxification of aluminum spent potliner |
| 05/19/1993 | CN1020755C Wet method for treating lead anode slurry |
| 05/13/1993 | WO1993009543A1 Method for reducing volume of a radioactive composition |
| 05/13/1993 | CA2121813A1 Method for reducing volume of a radioactive composition |
| 05/12/1993 | EP0540562A1 Decontamination and/or surface treatment of metals. |
| 05/12/1993 | CN1071967A Extraction of metal magnesium from boron slugde by silithermy |
| 05/12/1993 | CN1071965A Process for smelting zinc from zinc bearing scale in blast-furnace gas washing waste water |
| 05/05/1993 | CN1071708A Directly alloying process in vanadium slag furnace |
| 05/04/1993 | US5208004 Method for the recovery of zinc oxide |
| 04/29/1993 | DE4200963C1 Appts. for sepg. mixt. of small pieces of metals - comprises rotatable furnace with chargeable arrangement at one end and with perforations in outer wall to allow lowest m.pt. metal to escape |
| 04/28/1993 | EP0539352A1 Method of disposing of organic and inorganic substances |
| 04/28/1993 | EP0538717A1 Method for the pyrometallurgical treatment of iron oxides and heavy metals contained in the fumes of electric arc furnaces |
| 04/28/1993 | EP0538278A1 Reclamation of metal from scrap. |
| 04/27/1993 | US5205857 Placing object in enclosed atmosphere, heating and evacuating to evaporate and recover adhered substance |
| 04/26/1993 | CA2081277A1 Process for the use of igneous magma from vulcanoes to melt and regenerate worn out and recycled metals |
| 04/25/1993 | CA2081257A1 Method of disposing of organic and inorganic substances and a plant for carrying out the method |
| 04/22/1993 | CA2080879A1 Method for the pyrometallurgical treatment of iron oxides and heavy metals contained in the fumes of electric arc furnaces |
| 04/21/1993 | EP0538168A1 Process for the recovery of non ferrous metal values from pyrite cinders |
| 04/20/1993 | US5203908 Process for recovery of free aluminum from aluminum dross or aluminum scrap using plasma energy at high enthalpy |
| 04/15/1993 | WO1993006952A2 Process for removing heavy metals from soils |
| 04/15/1993 | CA2119021A1 Process for removing heavy metals from soil |
| 04/14/1993 | EP0536466A1 Process for the removal of cadmium from solutions of phosphoric acid |
| 04/13/1993 | US5202100 Method for reducing volume of a radioactive composition |
| 04/12/1993 | CA2067263A1 Process for the removal of cadmium from solutions of phosphoric acid |
| 04/06/1993 | US5199974 Flash smelting under reducing conditions; volatilization; slag formation |
| 04/06/1993 | US5199973 Method of disposing of medical sharps |
| 04/01/1993 | WO1993006253A1 Metal processing or recovery |
| 04/01/1993 | CA2118942A1 Metal processing or recovery |
| 03/31/1993 | CN1070430A Process for extracting germanium from germanic coal |
| 03/30/1993 | US5198020 Adding calcium, iron and/or barium to phosphorous component and reducing zinc |
| 03/30/1993 | CA1315098C Furnaces |
| 03/24/1993 | EP0532919A1 Method for removing a heavy metal from a waste stream |
| 03/23/1993 | US5196047 Method of treatment of zinc-containing by-products and waste materials |
| 03/17/1993 | EP0532222A1 Metal processing or recovery |
| 03/17/1993 | EP0515498A4 Cotreatment of sewage and steelworks wastes |
| 03/16/1993 | US5194086 Alloying, electrothermal reduction |
| 03/09/1993 | US5192359 Electromagnetic wave treatment of slags for aluminum separation |
| 03/03/1993 | CN2127781Y Smelting regeneratory furnace for waste lead accumulators |
| 03/03/1993 | CN1069524A Method for recoverying germanium from offscum containing germanium |
| 03/02/1993 | US5190578 Method for hydrometallurgical processing of friable concentration products |
| 02/24/1993 | EP0528361A1 Improved method of tellurium separation from copper electrorefining slime |
| 02/24/1993 | EP0363429B1 Process for chemical stabilization of heavy metal bearing dusts and sludges, such as eaf dust |
| 02/23/1993 | US5188795 Battery recycling, reduced heat loss |
| 02/23/1993 | US5188658 Cracking the agglomerates of carbonaceous binder and zinc oxide dust furnace to form slag phase, liquid metal phase and gas phase by condensation |
| 02/17/1993 | CN1069072A Process for recovery of titanium values from complex matrix comprising titanium nitride |
| 02/16/1993 | US5186742 Method and composition for use in recycling metal containing furnace dust |
| 02/16/1993 | US5186741 Direct reduction process in a rotary hearth furnace |
| 02/16/1993 | US5186740 Method for preheating scrap iron by pyrolysis of resinous residues contained therein, with total recovery of their energy content and improvement of the steelmaking cycle |
| 02/03/1993 | CN1068600A Gold dissolving process and liquid for gold coated article |
| 01/21/1993 | DE4123626A1 Reconditioning metallurgical residues with reduced installation costs - involves agglomeration or pelleting of residues, supplying to counted-flow melting unit with dust filter, heating and drying, etc. |
| 01/21/1993 | DE4122717A1 Recovery of precious metals from automotive catalytic converter - includes crushing metallic substrate and coatings into particles of differing weight, shape, and size and mechanically sepg. the precious particles |
| 01/19/1993 | US5180563 Treatment of industrial wastes |
| 01/19/1993 | US5180421 Method and apparatus for recovering useful products from waste streams |
| 01/17/1993 | CA2047260A1 Metal recovery and recycling method and system |
| 01/13/1993 | EP0522331A2 Disposal of contaminants present in scrapped auto-mobiles or apparatuses |
| 01/13/1993 | CN1067927A Gold and palladium recovery from waste catalyst and liquid carrying valve |
| 01/13/1993 | CN1067926A Platinum recovery from waste catalyst |
| 01/13/1993 | CN1067925A Method for recovery of palladium from waste pd-c catalyst and its incinerator system |
| 01/13/1993 | CA2072778A1 Disposal method for organic and inorganic nonmetallic ancillary materials from used vehicles, used appliances and the like |
| 01/07/1993 | EP0521844A1 Process for the energetic utilization of the waste from shredded scrap |
| 12/30/1992 | EP0520524A1 Removal of zinc from phosphating sludges |
| 12/29/1992 | US5174509 Separating by sizing, scrubbing, screening, crushing, magnetic means; recovering ash-free ferrous metal stream |
| 12/25/1992 | CA2072188A1 Metal recovery process |
| 12/22/1992 | US5173919 Manipulation of the exit gas flow in a melting furnace |
| 12/03/1992 | DE4217840A1 Recovery of waste laminated packing material - by separating metal, plastic and paper by treatment with organic acid |
| 12/02/1992 | EP0515792A2 Method for treating residues from a waste incineration plant and waste incineration plant for carrying out said method |
| 12/02/1992 | EP0515498A1 Cotreatment of sewage and steelworks wastes. |
| 12/02/1992 | CN1019317B Method of iron removing in the process of cadmium extraction |
| 12/01/1992 | US5167699 Without polluting the air |
| 11/26/1992 | DE4217081A1 Recovering plated metal from steel scrap - by vaporising organic material prior to vaporising plated metal |
| 11/23/1992 | CA2043169A1 Controlled pyrolysis of scrap tire by "epf" |
| 11/18/1992 | CN1066295A Recovery of metals from dust of argon/oxygen furnace |
| 11/17/1992 | US5164174 Detoxification of aluminum spent potliner by thermal treatment, lime slurry quench and post-kiln treatment |
| 11/11/1992 | EP0511973A1 Metal recovery. |
| 11/11/1992 | CN1066087A Copper powderagitated by use of reactive hydrogen and extracted by air-floated method, and its displacement device |
| 11/10/1992 | US5162107 Method of reprocessing zinc- and lead-containing residues from metallurgical plants by means of a circulating fluidized bed system |
| 11/10/1992 | CA1309869C Method for production of gallium |
| 11/04/1992 | CN1065885A Method for recovery of lead from used battery |
| 10/28/1992 | EP0511195A1 Process for continuous melting of shredded scrap and mixed scrap |
| 10/28/1992 | EP0510297A2 One step process for the treatment of Parkes desilvering crust to recover zinc and produce a suitable feed for cupellation |
| 10/28/1992 | CN1065687A Chromium slag leaching and smelting detoxication method |
| 10/27/1992 | US5158602 Method and apparatus for separating copper from chromite |
| 10/21/1992 | CN1065495A Process for smelting rare-earth alloy using rare-earth-contained waste slag |
| 10/21/1992 | CN1065493A Method of extracting white arsenic by precipitation to remove impurities |
| 10/14/1992 | EP0508589A1 Method and apparatus for recovering useful products from waste streams |
| 10/14/1992 | EP0508166A2 Direct reduction process and apparatus |
| 10/06/1992 | CA1308262C Method and apparatus for reclaiming metal values from electric arc furnace flue dust and sludge and rendering residual solids recyclable or non-hazardous |
| 09/22/1992 | US5148997 Slag crushing device |
| 09/17/1992 | WO1992015716A1 Methods and pneumo-gravitational separation apparatus for extracting mineral values from particulate materials |
| 09/17/1992 | WO1992015715A1 Methods and apparatus for extracting mineral values from particulate materials |
| 09/17/1992 | WO1992015714A1 Methods and chemo-thermal reactor apparatus for extracting mineral values from particulate materials |
| 09/15/1992 | US5147619 Feeding a sludge containing fine particles of nickel catlayst and fat into a fluidized bed, combustion or degradation of fat to produce waste gases and separating catalysts particles from fluidized bed and waste gases |
| 09/15/1992 | US5147554 Process for treating wastes from the machining of ferromagnetic materials |
| 09/12/1992 | CA2062637A1 Method and apparatus for recovering useful products from waste streams |