| 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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| 07/15/1997 | US5647876 Method of removing volatile metals from slag using an acid wash |
| 07/15/1997 | US5647288 Scrap conveyor having improved scrap pre-heating construction |
| 07/03/1997 | WO1997023427A1 Inorganic binder composition, production and uses thereof |
| 07/03/1997 | WO1997023309A1 Method and apparatus for reclaiming empty can of aluminum |
| 07/03/1997 | CA2241224A1 Inorganic binder composition, production and uses thereof |
| 07/02/1997 | EP0781856A1 Method and apparatus for recycling iron and steel industry waste |
| 07/02/1997 | EP0781352A1 Solder recovery |
| 07/02/1997 | EP0781174A1 Methods of decontaminating soils containing hazardous metals |
| 07/02/1997 | EP0781173A1 Method of decontaminating nuclear waste-containing soil |
| 07/02/1997 | EP0695370B1 Agglomerating by extrusion |
| 07/02/1997 | EP0627014B1 Recovery of non-ferrous metals from dross |
| 06/26/1997 | WO1997022975A2 Process for using contaminated metal parts |
| 06/26/1997 | DE19548213A1 Recycling of electronic circuit boards with circuit tracks |
| 06/25/1997 | EP0780481A1 Method and installation for the recovery of aluminium from wastes and residues |
| 06/25/1997 | CN1152884A 流体萃取 Fluid Extraction |
| 06/19/1997 | WO1997022124A2 Process for recycling contaminated metal parts |
| 06/19/1997 | WO1997021843A1 Process for processing waste or fractions thereof, especially light car shredder fractions |
| 06/19/1997 | WO1997021500A1 Lightweight compact waste treatment furnace |
| 06/19/1997 | DE19547298A1 Verfahren zur Verwertung kontaminierter Metallteile Process for the recovery of contaminated metal parts |
| 06/19/1997 | DE19547151A1 Separation and recovery of heavy metals such as cadmium@ and mercury@ from old batteries |
| 06/19/1997 | DE19546789A1 Verfahren zur Verwertung kontaminierter Metallteile Process for the recovery of contaminated metal parts |
| 06/18/1997 | CN1152260A Fluid extraction of metal and/or metalloid |
| 06/17/1997 | US5640708 Treatment of waste |
| 06/12/1997 | WO1997020958A1 Recovery of cobalt from slag |
| 06/12/1997 | WO1997020643A2 Apparatus and method for waste recycling and conversion |
| 06/12/1997 | DE19545579A1 Comminution of materials in metal housings, in particular, motor car catalyst units |
| 06/12/1997 | CA2192621A1 Method and apparatus for recycling iron and steel industry waste |
| 06/04/1997 | EP0776377A1 Sulphate agglomeration |
| 06/04/1997 | CN1151033A Method for recovery silver from solid sensitive material |
| 05/29/1997 | WO1997019455A1 Method of utilizing contaminated metal parts |
| 05/29/1997 | WO1997019197A1 Method and device for decarburizing steels melts |
| 05/28/1997 | EP0723599B1 Recovery of palladium catalyst |
| 05/28/1997 | DE19543549A1 Verfahren zur Verwertung kontaminierter Metallteile Process for the recovery of contaminated metal parts |
| 05/22/1997 | WO1997018415A1 Plant and process for thermal decomposition, melting and vitrification and for recovering substances from waste and residues of the most widely varying kinds |
| 05/22/1997 | WO1997018338A1 Method of processing finely divided material incorporating metal based constituents |
| 05/22/1997 | CA2237874A1 Method of processing finely divided material incorporating metal based constituents |
| 05/21/1997 | EP0773831A1 Method and device for separating harder from less harder material |
| 05/20/1997 | US5630931 Process for the hydrometallurgical and electrochemical treatment of the active mass of exhausted lead batteries, to obtain electrolytic lead and elemental sulphur |
| 05/15/1997 | WO1997017476A1 Use of a process for melting small pieces of light metal scrap |
| 05/15/1997 | WO1997017307A2 Method for preparing hardened granules from a particulate material |
| 05/15/1997 | DE19542360A1 Precipitating free and complex bonded silver from waste and photographic processing solutions |
| 05/15/1997 | DE19541993A1 Anwendung eines Verfahrens zum Behandeln von Metallschmelzen Using a procedure for treating metal melts |
| 05/15/1997 | DE19541729A1 Recycling partly metallic materials, especially circuit board scrap |
| 05/14/1997 | EP0773301A1 Hydrometallurgical treatment for the purification of waelz oxides through lixiviation with sodium carbonate |
| 05/14/1997 | EP0773300A1 Scrap melting method |
| 05/13/1997 | US5628973 Lithium cell treating method and lithium cell treating apparatus |
| 05/13/1997 | US5628817 Method for leaching nickel-copper matte employing substantially neutral leaching solutions |
| 05/09/1997 | WO1997016230A1 Metallurgical dust recycle process |
| 05/07/1997 | EP0771881A1 An integrated process for the recovery of metals and fused alumina from spent catalysts |
| 05/07/1997 | EP0771370A1 Process for electrochemically dissolving a metal such as zinc or tin |
| 05/07/1997 | EP0771364A1 Recovery of non-ferrous metals from dross |
| 05/07/1997 | EP0712446B1 Process for producing steel using briquettes from smelting residues |
| 05/07/1997 | DE19541074A1 Recycling solar cells or modules of silicon@ and silicon alloys |
| 05/06/1997 | US5626664 Metal agglomerates with fly ash, coke or blast furnace flue gas dust |
| 05/06/1997 | US5626646 Method of recovering metals and producing a secondary slag from base metal smelter slag |
| 05/06/1997 | US5626249 Plasmalysis treatment method for waste matter |
| 05/02/1997 | EP0770149A1 Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium |
| 05/01/1997 | WO1997015355A1 Method for processing waste containing metal contaminants using a reducing agent |
| 05/01/1997 | CA2236142A1 Method for processing waste containing metal contaminants using a reducing agent |
| 04/23/1997 | EP0685001B1 Process for the treatment of electric arc furnace dust |
| 04/23/1997 | CN1148409A A. Edlinger (CH) |
| 04/23/1997 | CN1148093A Method for recovering copper and chromium from waste industrial catalyst |
| 04/23/1997 | CN1148079A Method of eliminating mercury from liquid hydrocarbons |
| 04/17/1997 | WO1997013881A1 Treatment of waste products that contain organic substances |
| 04/16/1997 | CN1147774A Method and device for treating composite elements |
| 04/15/1997 | US5620936 Tantalum and niobium salts |
| 04/15/1997 | US5619934 Waste car disposer |
| 04/10/1997 | DE19537283A1 Treating waste contg. metallurgical fines to recover metals |
| 04/09/1997 | EP0767243A1 Recovery of active components from carrier or monolythic catalysts |
| 04/09/1997 | EP0767140A1 Process for the recovery of salt components from hardening salt baths |
| 04/09/1997 | EP0766750A1 Process and plant for recycling iron-containing residues from the steel and iron industry |
| 04/09/1997 | CN1147021A Method and apparatus of treating dusts containing oxides |
| 04/07/1997 | CA2187053A1 Process for recovering the salt constituents from hardening-shop salt baths |
| 04/03/1997 | WO1997012065A1 Method of melting tinned iron scrap |
| 04/02/1997 | EP0765944A1 Method of removing volatile metals from gasification slag particles using an acid wash |
| 04/01/1997 | US5616168 Hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper |
| 04/01/1997 | CA2049276C Method of tellurium separation from copper electrorefining slime |
| 03/27/1997 | CA2180308A1 Method of removing volatile metals from slag using an acid wash |
| 03/26/1997 | EP0764137A1 Method for extracting metals from metal-containing materials by pyrohydrolysis |
| 03/26/1997 | EP0764042A1 Fluid extraction |
| 03/26/1997 | EP0643779B1 A method of treating dross materials in metallurgical melting processes |
| 03/26/1997 | CN1146169A Process for treatment of contaminated land |
| 03/25/1997 | US5613998 Reclamation process for tungsten carbide and tungsten-based materials |
| 03/25/1997 | US5613996 Process for treatment of reactive fines |
| 03/25/1997 | CA2041066C One step process for the treatment of parkes desilvering crust to recover zinc and produce a suitable feed for cupellation |
| 03/19/1997 | EP0762918A1 Fluid extraction of metals and/or metalloids |
| 03/18/1997 | US5613238 Mixing ammonia liquid with soils for ion removal, separation from soils |
| 03/18/1997 | US5611838 Supplying carriers and reducing agents into foamed slag; low energy |
| 03/18/1997 | CA2074258C Method and device for recovery of scrap goods |
| 03/12/1997 | EP0621855B1 Method for the recovery of zinc oxide |
| 03/05/1997 | EP0611478B1 Method for reducing volume of a radioactive composition |
| 03/05/1997 | EP0557312B1 Direct sulphidization fuming of zinc |
| 03/04/1997 | US5607505 Waste treatment process |
| 02/27/1997 | WO1997007249A1 Recovery of elements involving a chemical processing step |
| 02/27/1997 | WO1997007248A1 Method for recovering nickel hydrometallurgically from two different nickel mattes |
| 02/27/1997 | WO1997006876A1 Process for reducing the dioxin and furan content in waste gases from furnaces, and use of the filter dusts produced thereby |
| 02/27/1997 | CA2229599A1 Recovery of elements involving a chemical processing step |
| 02/27/1997 | CA2225654A1 Process for reducing the dioxin and furan content in waste gases from furnaces, and use of the filter dusts produced thereby |
| 02/26/1997 | CN1143980A Solder recovery |
| 02/26/1997 | CN1143682A Method and digesting surface for recovering noble metals and aluminium from waste aluminium base catalyst |