| 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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| 08/26/1998 | EP0859935A1 Plant and process for thermal decomposition, melting and vitrification and for recovering substances from waste and residues of the most widely varying kinds |
| 08/26/1998 | EP0745144B1 Method and apparatus for recovery of non-ferrous metals from scrap and dross |
| 08/19/1998 | CN1190676A Method for recoverying platinum from ammonia oxidation converter waste |
| 08/18/1998 | US5795673 Method of recovering useful materials from spent secondary batteries for electric vehicles |
| 08/18/1998 | US5795479 Apparatus and method for waste recycling and conversion |
| 08/13/1998 | WO1998035063A1 Method and device for direct reduction of ore fines |
| 08/13/1998 | WO1998034730A1 Metal recovery from salt cake and other compositions |
| 08/13/1998 | CA2250414A1 Method and device for direct reduction of ore fines |
| 08/12/1998 | EP0705127B1 Solvent extraction of metal containing species |
| 08/11/1998 | US5792364 Wastewater treatment process for vacuum degasser effluent |
| 08/04/1998 | US5789095 Method of recovering useful materials from spent secondary batteries for electric vehicles |
| 08/04/1998 | US5788937 Method for the recovery of silver value from aqueous solution |
| 08/04/1998 | US5788918 Dross press fume extraction system |
| 08/04/1998 | US5788740 Method for the hydrometallurgical separation and recovery of biological nutrients, lead, gypsum and cadmium from raw materials |
| 08/04/1998 | US5788735 Plasma arc furnaces for pyrolysis and combustion, smelting of soils and forming slags |
| 07/28/1998 | US5787353 Fluorination of uranium oxide and/or uranyl fluoride; carbonylation of metallic nickel with carbon monoxide and a gaseous promoter |
| 07/28/1998 | US5785935 Using liquid leachant |
| 07/28/1998 | US5785923 Useful for melting metals, glasses and ceramics; includes metler housing, joule heated melter and an offgas outlet |
| 07/28/1998 | US5785737 Forming sludge, slag mixture; dehydrating |
| 07/28/1998 | US5785732 process and apparatus for recovering Na from spent NaS cells |
| 07/23/1998 | WO1998031779A1 Separation of heavy metals and materials for use in this |
| 07/23/1998 | CA2277156A1 Separation of heavy metals and materials for use in this |
| 07/22/1998 | EP0854199A1 Decontamination of zinc-containing metallurgical residues by continuous electro-hydrometallurgical treatment in alkaline environment |
| 07/22/1998 | EP0854198A1 Process and apparatus for charging and melting small-sized light metal scrap |
| 07/22/1998 | EP0853986A1 Separation of heavy metals and materials for use in this |
| 07/22/1998 | EP0853648A1 Method for preparing inorganic pigments, resulting inorganic pigments, and apparatus therefor |
| 07/22/1998 | EP0776377B1 Sulphate agglomeration |
| 07/21/1998 | US5783142 Oxidizing aluminum dross residue to high alumina lightweightaggregateat |
| 07/21/1998 | US5783062 Process for the treatment, by an electrochemical route, of compositions containing precious metals with a view to their recovery |
| 07/16/1998 | WO1998030499A1 Detoxifying aluminum spent potliners |
| 07/15/1998 | EP0852692A1 Method of melting oxidic slags and combustion residues, and device for carrying out this method |
| 07/15/1998 | EP0815269A4 Improved hydrometallurgical processing of impurity streams generated during the pyrometallurgy of copper |
| 07/15/1998 | CN1187801A Sodium tungstate preparation process |
| 07/15/1998 | CA2227126A1 Process and device for melting light metals |
| 07/14/1998 | US5779877 Recycling of CIS photovoltaic waste |
| 07/08/1998 | EP0754090B1 Method for obtaining secondary aluminium |
| 07/08/1998 | CN1187156A Process for recovering iron from iron-rich material |
| 07/07/1998 | US5776426 Using caustic liquid and lime |
| 07/07/1998 | US5776329 Method for the decomposition and recovery of metallic constituents from superalloys |
| 07/07/1998 | US5776226 Oxidation in a meltdown oxidizing reactor and two stage reduction |
| 07/01/1998 | EP0850885A1 Melt treatment apparatus |
| 07/01/1998 | CN1186522A Process for recovering metals from iron oxide bearing masses |
| 06/25/1998 | WO1998027240A1 Method and device for separating metals and/or metal alloys of different melting points |
| 06/25/1998 | DE19756544A1 Tin-coated steel scrap recycling process |
| 06/23/1998 | US5769906 Process for recovering the salt constituents from hardening-shop salt baths |
| 06/23/1998 | US5769331 Method and apparatus for recycling empty aluminum cans |
| 06/18/1998 | WO1998026101A1 Method for preparing zeolites from fly ash |
| 06/18/1998 | CA2225113A1 Method for treatment of waste material and recovering mgc12 |
| 06/16/1998 | US5766307 Separating and collecting zinc dust in a smelting reduction furnace by contacting a zinc oxide-containing substance, e.g.electric furnace dust, with a carbonaceous reducing agent; slurrying the furnace gas with a coolant |
| 06/16/1998 | US5766303 Introducing lead-containing hazardous material into hollow electrode of plasma arc furnace to pyrolyze and render non-hazardous |
| 06/16/1998 | US5765489 Process for the treatment of solid residue from refuse incineration plants, and apparatus for performing the process |
| 06/11/1998 | WO1998024939A1 Method and apparatus for separating solder |
| 06/11/1998 | WO1998024938A1 Extraction of metals from heavy metal-bearing wastes |
| 06/10/1998 | EP0846187A1 Recovery of elements involving a chemical processing step |
| 06/10/1998 | DE19712042C1 Blast furnace charge agglomerate |
| 06/10/1998 | CN1038694C Process for producing an iron melt |
| 06/09/1998 | US5762683 Ferric fluoborate/organic extractant hydrometallurgical process for recovering metals |
| 06/04/1998 | DE19712025C1 Production of agglomerate for blast furnace |
| 06/02/1998 | US5759503 Method for the further purification of zinc oxide |
| 06/02/1998 | US5759410 Process for recovering mercapto-s-triazines from silver precipitate |
| 06/02/1998 | US5759231 Drying metal sludge for disposal |
| 06/02/1998 | US5759229 Method for recovering cobalt/manganese/bromine values from residue containing used catalyst |
| 05/28/1998 | WO1998022216A1 Production of aromatic carboxylic acids and recovery of co/mn cattalyst from ash |
| 05/27/1998 | EP0843741A1 Method for upgrading waste material comprising sheet metal with a zinc plating on at least one side thereof |
| 05/27/1998 | EP0843587A1 Process for reducing the dioxin and furan content in waste gases from furnaces, and use of the filter dusts produced thereby |
| 05/27/1998 | EP0713536B1 A process for recovering metals |
| 05/26/1998 | US5758254 Reacting radioactive beryllium with halogen gas at temperature above sublimation temperature, recovering beryllium |
| 05/26/1998 | US5755889 For separating solder from dross |
| 05/22/1998 | WO1998021295A1 Blast furnace fuel from reclaimed carbonaceous materials |
| 05/20/1998 | EP0843142A1 Apparatus and method for oxygen lancing in a multiple hearth furnace |
| 05/20/1998 | EP0842305A1 Process for treating residues arising in industrial processes and the burning of rubbish |
| 05/19/1998 | US5752993 Blast furnace fuel from reclaimed carbonaceous materials and related methods |
| 05/19/1998 | US5752452 Apparatus and method for oxygen lancing in a multiple hearth furnace |
| 05/14/1998 | WO1998020175A1 Dross press with rocking press head |
| 05/14/1998 | WO1998020173A1 Molten metal pump and method of using |
| 05/14/1998 | DE19647698A1 Method and installation for preparation of non ferrous metals |
| 05/13/1998 | EP0840808A1 Method of purifying gold |
| 05/13/1998 | EP0740695A4 Utilizing discarded carbon |
| 05/12/1998 | US5750081 Blend of supercritical fluid, complexer and conditioning agent |
| 05/12/1998 | US5749962 Method of making cement from base metal smelter slag |
| 05/07/1998 | WO1998018971A1 Method for extraction of metals and metal oxides from minerals, industrial by-products and waste materials |
| 05/07/1998 | CA2269937A1 Method for extraction of metals and metal oxides from minerals, industrial by-products and waste materials |
| 05/06/1998 | EP0839919A1 Process and installation for treating of flue dusts from electric steelworks |
| 05/06/1998 | CN1180812A Apparatus and method for oxygen lancing in multiple hearth furnace |
| 05/06/1998 | CN1180755A Pretreatment method before wet method acid immersion for lead anode mud |
| 05/05/1998 | US5748666 Method and furnace for treatment of ash |
| 04/30/1998 | WO1998017832A1 METHOD OF DE-CHROMING AND/OR DEPLETING THE MgO CONTENT OF STEEL SLAG |
| 04/29/1998 | CN1038199C Method for recovery of platinum family metal from waste catalysts |
| 04/28/1998 | US5744107 Process for removing heavy metals from soil |
| 04/28/1998 | US5743937 Earth melter with rubble walls and method of use |
| 04/28/1998 | US5743936 Removing electronics from printed wiring boards, polishing surfaces, milling, separating milled portions |
| 04/22/1998 | EP0837043A1 Process for processing stainless steel slags |
| 04/22/1998 | EP0836523A1 Process for making shaped copper articles |
| 04/22/1998 | EP0771364B1 Recovery of non-ferrous metals from dross |
| 04/22/1998 | CN1179556A Method for recovering silver from deposited silver mud of waste sensitive material |
| 04/16/1998 | WO1998015666A1 Production process to obtain precious metals especially zinc from raw materials containing chlorine or fluorine |
| 04/16/1998 | WO1998015665A1 Method for downgrading high-melting materials by using a melting tank and an electro-reduction tank |
| 04/16/1998 | WO1998015661A1 Method for producing liquid pig iron or steel fabricated materials and installation for implementing said method |
| 04/16/1998 | DE19643459A1 Verfahren zum Abreichern von hochschmelzenden Materialien A method for depleting refractory materials |
| 04/15/1998 | EP0617739B1 Method for continuously melting down scrap metal |