| 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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| 02/25/1997 | US5605640 Reactor for the treatment of particulate matter by electrical discharge |
| 02/20/1997 | WO1997006283A1 Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof |
| 02/20/1997 | WO1997006282A1 Electrochemical processing method for catalyst substrates containing noble metals for the recovery thereof |
| 02/20/1997 | WO1997006215A1 Method for preparing inorganic pigments, resulting inorganic pigments, and apparatus therefor |
| 02/20/1997 | WO1997005924A1 Heterogeneous waste processing |
| 02/20/1997 | CA2229058A1 Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof |
| 02/20/1997 | CA2228562A1 A method of preparing inorganic pigments, inorganic pigments obtained thereby, and an installation for implementing such a method |
| 02/13/1997 | WO1997005295A1 Process and device for recovering hard alloys and sintered materials |
| 02/13/1997 | WO1997005294A1 Method of purifying gold |
| 02/13/1997 | DE19621492A1 Verfahren zur Verminderung des Dioxin- und Furangehaltes in Ofenabgasen und Nutzung der dabei anfallenden Filterstäube A method of reducing dioxin and Furangehaltes in kiln exhaust gases and use the resulting filter dusts |
| 02/13/1997 | CA2237171A1 Method of purifying gold |
| 02/12/1997 | EP0758024A1 Process for agglomerating oily mill scale sludges |
| 02/12/1997 | CN1142845A Utilizing discarded carbon |
| 02/12/1997 | CN1142543A Treating method for waste alkali etching liquid of printed circuit boards |
| 02/11/1997 | US5601625 Process and device for removing heavy metals and compounds containing heavy metals |
| 02/04/1997 | US5599514 Treating reaction liquors with alkaline earth metal hydroxide, treating precipitate formed with mineral acid to dissolve cobalt salt, separating tungstic acid |
| 02/04/1997 | US5599372 Process for removing metal contaminants from soils |
| 02/04/1997 | US5599361 Stable compressed solid fuel pellets or briquets containing coal and/or coke fines with polymeric binder |
| 01/31/1997 | EP0713054A4 Process and device for the thermal destruction of waste |
| 01/29/1997 | EP0755994A2 Method of eliminating mercury from liquid hydrocarbons |
| 01/28/1997 | US5597526 Lithium cell treating apparatus |
| 01/28/1997 | CA2182154A1 Method for eliminating mercury from liquid hydrocarbons |
| 01/28/1997 | CA2031060C Apparatus for using hazardous waste to form non hazardous aggregate |
| 01/26/1997 | CA2154608A1 Method of purifying gold |
| 01/22/1997 | EP0754245A1 Method of manufacturing pig iron or steel and cement clinker from slags |
| 01/22/1997 | EP0754090A1 Method for obtaining secondary aluminium |
| 01/22/1997 | EP0722376A4 Treatment of particulate matter by electrical discharge |
| 01/22/1997 | CN1033841C Counter-current circulation sectional extracted separation method of chromium dross comprehensive utilization |
| 01/16/1997 | WO1997001650A1 Method of treating steel mill waste |
| 01/16/1997 | WO1996031629A3 Process for treating impurity streams for disposal |
| 01/15/1997 | EP0753491A1 Process for treatment of reactive fines |
| 01/15/1997 | EP0739430A4 Process for making copper wire |
| 01/15/1997 | EP0650384B1 Treatment of polyvinylchloride |
| 01/14/1997 | US5593888 Method for accelerated bioremediation and method of using an apparatus therefor |
| 01/14/1997 | US5593493 Method of making concrete from base metal smelter slag |
| 01/09/1997 | DE19524215A1 Schmelzofen zur thermischen Behandlung von schwermetallhaltigen und/oder dioxinhaltigen Sonderabfällen Furnace for thermal treatment of heavy metal-containing and / or dioxin-containing hazardous waste |
| 01/08/1997 | EP0751831A1 Method and device for treating composite elements |
| 01/03/1997 | WO1997000333A1 The processing of zinc bearing materials in a dc arc furnace |
| 12/31/1996 | US5589118 Forming into briquettes with binder |
| 12/27/1996 | WO1996041902A1 Ammoniacal metal solution recycling process |
| 12/27/1996 | WO1996041768A1 Sodium tungstate preparation process |
| 12/27/1996 | CA2224322A1 A process for working up ammoniacal metal solutions |
| 12/27/1996 | CA2224254A1 Sodium tungstate preparation process |
| 12/27/1996 | CA2178672A1 Method of making concrete from base metal smelter slag |
| 12/24/1996 | US5587002 Adding quicklime, iron ore, slag, metal fibrils to fatty rolling mill slurries, homogenizing, compacting |
| 12/24/1996 | US5586731 Compost mixing and aerating apparatus |
| 12/24/1996 | CA2047650C Process for the recovery of titanium values |
| 12/19/1996 | DE19522962A1 Inexpensive pollution-free picture tube glass recycling |
| 12/19/1996 | DE19522064A1 Method and appts. for recovery of noble metals from electronic scrap |
| 12/19/1996 | DE19521352A1 Verfahren zur Aufarbeitung ammoniakalischer Metallösungen Process for working metal ammoniacal solutions |
| 12/17/1996 | CA2021638C Decontamination and/or surface treatment of metals |
| 12/12/1996 | WO1996039290A1 Process for recovering iron from iron-rich material |
| 12/12/1996 | DE19520651A1 Utilisation of clarifier and waterworks sludge |
| 12/12/1996 | CA2223044A1 Process for recovering iron from iron-rich material |
| 12/11/1996 | CN1137809A Process for making copper wire |
| 12/11/1996 | CN1033501C Process and device for removing lead, cadmium and zinc from dusts |
| 12/10/1996 | US5582631 Combining with iron-poor material such as exhaust fumes; treating with ammonium chloride leaching solution; separation; roasting |
| 12/05/1996 | DE19521333C1 Verfahren zur Herstellung von Natriumwolframat Process for the preparation of sodium tungstate |
| 12/05/1996 | DE19520441A1 Hydrometallurgical processing and utilisation of residues and wastes contg. heavy metals |
| 12/04/1996 | EP0745692A1 Method and apparatus of treating dusts containing oxides |
| 12/04/1996 | EP0745454A1 Method for processing metal chips and/or metal dust |
| 12/04/1996 | EP0745439A2 Process for removing heavy metals from soil |
| 12/04/1996 | EP0745438A2 Process for removing heavy metals from soil |
| 12/04/1996 | EP0745144A1 Method and apparatus for recovery of non-ferrous metals from scrap and dross |
| 12/04/1996 | EP0745006A1 Process for the treatment of contaminated land |
| 12/03/1996 | CA2008167C Method and apparatus for manufacturing high-grade nickel matte |
| 11/28/1996 | WO1996037634A1 Process for forming shaped articles |
| 11/27/1996 | EP0744380A1 Reclamation process for tungsten carbide and tungsten-based materials |
| 11/24/1996 | CA2176179A1 Reclamation process for tungsten carbide and tungsten-based materials |
| 11/21/1996 | WO1996036743A1 Method and device for treating metal-containing dusts arising from thermal metallurgical processes |
| 11/21/1996 | DE19619965A1 Recovering and sepg. material from used circuit boards |
| 11/21/1996 | DE19518643A1 Recycling used batteries |
| 11/19/1996 | US5575915 Methods of removing silver |
| 11/14/1996 | WO1996035511A1 Reprocessing method for salvaged metallic materials |
| 11/13/1996 | CN1033281C Method for recovering tin, copper, lead, zinc etc. from copper-smelting offscus |
| 11/13/1996 | CN1033280C Lead and zinc recovery method from smoke containing iron, manganese, zinc, lead |
| 11/12/1996 | US5573576 Method of treating steel mill waste |
| 11/12/1996 | US5573574 Crystallization, electrolytic refining |
| 11/09/1996 | CA2175624A1 Process for treatment of reactive fines |
| 11/07/1996 | WO1996034989A1 Process for producing hydraulic binders and/or alloys, e.g. ferrochromium or ferrovanadium |
| 11/07/1996 | WO1996034987A1 Process for recovering metals from iron oxide bearing masses |
| 11/07/1996 | CA2219415A1 Process for recovering metals from iron oxide bearing masses |
| 11/06/1996 | EP0741192A1 Method for working up zinc and iron oxide bearing residual material |
| 11/06/1996 | EP0740695A1 Utilizing discarded carbon |
| 11/06/1996 | CA2175742A1 Method of reprocessing zinc- and iron oxide-containing residual material |
| 11/05/1996 | US5571306 Feedstock for steel making |
| 10/31/1996 | WO1996034120A1 Process and plant for recycling iron-containing residues from the steel and iron industry |
| 10/31/1996 | WO1996034119A1 Metal waste processing facility |
| 10/30/1996 | EP0739430A1 Process for making copper wire |
| 10/29/1996 | US5569314 Thermal stabilization of steelmaking slag |
| 10/23/1996 | EP0658216B1 Charging metal solids into molten metal |
| 10/22/1996 | US5567225 Method of making pig iron with zinc recovery |
| 10/17/1996 | WO1996032516A1 Process for treating residues arising in industrial processes and the burning of rubbish |
| 10/17/1996 | WO1996032515A1 Rotation system for press head |
| 10/17/1996 | WO1996032514A1 Dross press fume extraction system |
| 10/17/1996 | WO1996032513A1 Cooling system for press head |
| 10/17/1996 | WO1996032512A1 Hydrometallurgical treatment for the purification of waelz oxides through lixiviation with sodium carbonate |
| 10/17/1996 | CA2218051A1 Process for treatment of residues which arise in industrial processes and in waste incineration |
| 10/16/1996 | EP0737113A1 Method and furnace for treatment of ash |
| 10/15/1996 | US5566200 Process and device for disposal of filter materials |