| 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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| 05/05/1987 | CA1221243A1 Vanadium recovery from ash from oil sands |
| 04/30/1987 | DE3537852A1 Process for treating zinc- and lead-containing metallurgical slags |
| 04/28/1987 | US4661240 Low sulfur coke using dispersed calcium |
| 04/23/1987 | DE3536635A1 Process and equipment for recovering especially iron as well as zinc, lead and other non-ferrous metal constituents from oxide materials of high iron content |
| 04/22/1987 | EP0219213A2 Method of recovering gallium from scrap containing gallium |
| 04/21/1987 | US4659375 Method of heating, melting and coal conversion |
| 04/14/1987 | US4657745 Value recovery from spent alumina-base catalyst |
| 04/14/1987 | US4657585 Method for separating cobalt, nickel and the like from alloys |
| 04/14/1987 | CA1220351A1 Melting scrap metal and ingestion of solids in molten metal |
| 04/14/1987 | CA1220349A1 Thermal reduction process for production of magnesium using aluminum skim as a reductant |
| 04/14/1987 | CA1220347A1 Recovery of aluminium scrap |
| 04/14/1987 | CA1220346A1 Continuous method for reclaiming, melting and casting aluminum scrap |
| 04/09/1987 | WO1987002124A1 Melting and holding furnace |
| 04/08/1987 | EP0217139A1 Working up zinc- and lead-bearing residual materials obtained in steel making industryin view of a further metallurgical treatment |
| 04/07/1987 | US4655928 Recycling |
| 04/01/1987 | EP0216618A2 Recovery of volatile metal values from metallurgical slags |
| 04/01/1987 | EP0216493A1 Platinum recovery using perforation resistant gauzes |
| 04/01/1987 | CN85106965A Method for recovering the valuable metal content of contaminated copper raw material |
| 03/31/1987 | US4654088 Decoating of aluminum scrap |
| 03/24/1987 | US4652433 Method for the recovery of minerals and production of by-products from coal ash |
| 03/24/1987 | CA1219452A1 Method for separating and recovering silica, aluminum and iron from fly ash mineral ores, and mine tailings |
| 03/18/1987 | EP0214268A1 A method for working-up waste products containing valuable metals. |
| 03/17/1987 | US4650649 Catalyst recovery process |
| 03/17/1987 | CA1219133A1 Continuous direct process of lead smelting |
| 03/12/1987 | WO1987001366A1 Process for purifying silver refinery slimes |
| 03/12/1987 | DE3630697A1 Process for producing clinkers from sludges containing heavy metals |
| 03/11/1987 | CN85106670A Process for extraction of noble metal from anode mud by the method of controlling potential |
| 03/10/1987 | US4649031 Process for recovering rare metals from the combustion residue of coal by digestion |
| 03/04/1987 | EP0212982A2 Recovery of rhodium from carbonylation residues using immiscible liquids |
| 03/04/1987 | EP0212453A1 Process for the recovery of gold from a precious metal bearing sludge concentrate |
| 03/03/1987 | CA1218530A1 Treatment of anode slimes in a top blown rotary converter |
| 02/25/1987 | EP0211016A1 Apparatus for the treatment of flue gases. |
| 02/17/1987 | US4643110 Direct fuel-fired furnace arrangement for the recovery of gallium and germanium from coal fly ash |
| 02/03/1987 | US4640823 Alkaline leaching of vanadium bearing residues |
| 02/03/1987 | US4640751 Reacting mercury and mercuric chloride to form mercurous chloride, oxidizing mercurous chloride with chlorine to form mercuric chloride, electrolyzing to form metallic mercury and chlorine |
| 01/31/1987 | CN85102378A Production of vanadium from atomized vanadium residue by calcination and water extraction in one run |
| 01/28/1987 | EP0209734A1 Process for the recovery of amine and metal compounds in the preparation of polyphenylene ether |
| 01/27/1987 | US4639355 Process for recovering gallium from aluminum smelting dust |
| 01/22/1987 | DE3524703A1 Process for preparing low-phosphorus vanadium compounds from high-phosphorus vanadium slags |
| 01/21/1987 | EP0209272A1 Extracting metal values from metal containing particles |
| 01/20/1987 | US4637920 Treating with sulfuric acid, reducing with iron scraps, precipitation with ammonia |
| 01/20/1987 | US4637591 Dross cooler and processor |
| 01/14/1987 | EP0208644A1 Electrothermal process for the separation and refining of metals starting from recuperation products |
| 01/14/1987 | CN85105628A Nonpoisonous treatment of chromium slag and extraction of calcium and magnesium |
| 01/14/1987 | CN85104999A Method of processing an iron-containing dust obtained in the preparation of iron of steel |
| 01/13/1987 | US4636250 Magnesium fluoride |
| 01/13/1987 | CA1216432A1 Method for treating iron-bearing slags containing precious metals, particularly slags created in the smelting processes of copper and nickel |
| 01/07/1987 | EP0207656A1 Recovery of metals from their alloys with lead |
| 12/30/1986 | US4632701 Process for the recovery of silver from a residue essentially free of elemental sulphur |
| 12/24/1986 | CN85104559A Process for the separation of metal compounds by reduction |
| 12/16/1986 | US4629606 Recovery of tungsten compounds |
| 12/10/1986 | EP0204564A2 Method of separating molybdenum or tungsten from non-volatile contaminants |
| 11/25/1986 | CA1214334A1 Method for the recovery of silver from waste photographic fixer solutions |
| 11/20/1986 | WO1986006750A1 Catalyst recovery process |
| 11/18/1986 | CA1214045A1 Process for the recovery of indium and tin |
| 11/06/1986 | WO1986006418A1 Method of dissolving and recovering noble metals |
| 11/06/1986 | EP0159349A4 Processes for treating waste streams. |
| 11/05/1986 | EP0200318A1 Further improvements in tungsten recovery |
| 11/05/1986 | EP0200317A2 Improvements in tungsten recovery |
| 10/22/1986 | EP0198302A1 Process for preparing fine ferrous discharge matter with alloying elements, e.g. chromium in its sixth oxidation state, particularly originating from filter dust and/or filter sludge from the steel, particularly from the electrosteel industry |
| 10/21/1986 | CA1212843A1 Metallic scrap decontamination process |
| 10/15/1986 | EP0197444A2 Recovery of cobalt and chromium |
| 10/14/1986 | US4617112 Thermal gravity classifying apparatus and method |
| 10/08/1986 | EP0196800A1 Secondary lead production |
| 10/07/1986 | US4615731 Hydrometallurgical processing of precious metal-containing materials |
| 09/30/1986 | US4614543 Mixed lixiviant for separate recovery of zinc and lead from iron-containing waste materials |
| 09/23/1986 | US4613365 Method for recovering precious metals |
| 09/17/1986 | CN85102698A Method of comprehensive use of furnace cinder |
| 09/16/1986 | US4612168 Process for refining brass and aluminum scraps |
| 09/16/1986 | US4612041 Process for recovering valuable metals from an iron dust containing a higher content of zinc |
| 09/16/1986 | CA1211292A1 Method for separating nonferrous metals from iron- oxide-containing residues |
| 09/12/1986 | WO1986005211A1 A method for working-up waste products containing valuable metals |
| 09/09/1986 | US4610722 Process for metal recovery from steel plant dust |
| 09/09/1986 | US4610721 Two-stage leaching process for steel plant dusts |
| 09/02/1986 | US4609538 Scrap heating method |
| 09/02/1986 | CA1210746A1 Recovering metal compounds from used catalysts obtained from hydroprocessing hydrocarbon feedstocks |
| 08/26/1986 | US4608235 Oxidation of alloy in fused sodium hyrooxide |
| 08/26/1986 | US4608084 Recovery of cobalt and chromium |
| 08/19/1986 | US4606765 Process for treating zinc-laden dust issuing from electric steel plant furnaces |
| 08/19/1986 | US4606762 Process for the recovery of mercury |
| 08/12/1986 | US4605541 Recovery of noble metal values from carbonylation residues using immiscible liquids |
| 08/12/1986 | US4605435 Recycling of steel plant dusts to steel furnaces |
| 08/12/1986 | CA1209345A1 Method for treating blast furnace gas and apparatus for carrying out that method |
| 07/31/1986 | WO1986004257A1 Apparatus for the treatment of flue gases |
| 07/30/1986 | EP0189062A2 Method for converting heavy metal-containing residues into solid matter which can be dumped |
| 07/30/1986 | CN85100731A Recovery of valuable metals from industrial waste |
| 07/29/1986 | US4602574 Destruction of toxic organic chemicals |
| 07/23/1986 | EP0188305A2 A process for processing a moist metal or metal compounds containing composition comprising at least on solid product separated from gases evolved during the preparation of iron |
| 07/22/1986 | US4601889 Adsorption by an acrylic polymer, uranium from seawater |
| 07/22/1986 | US4601832 Method of processing waste materials, particularly sludge containing noxious metals |
| 07/22/1986 | US4601750 Scrap melting system |
| 07/15/1986 | US4600699 Reclamation of a palladium-tin based electroless plating catalyst from the exhausted catalyst solution and accompanying rinse waters |
| 07/15/1986 | CA1207537A1 Hydrogenation of carbonaceous material |
| 07/08/1986 | US4598899 Light gauge metal scrap melting system |
| 07/08/1986 | CA1207152A1 Process for recovering metals of high commercial value contained in a mud |
| 07/08/1986 | CA1207143A1 Metal melting furnace |
| 07/02/1986 | EP0186445A2 Process for the separation of metals from aqueous media |
| 07/02/1986 | EP0185879A2 Shaft furnace for the treatment of waste lead and battery scrap with a post-combustion installation for the exhaust gases |
| 06/18/1986 | EP0185004A1 A method for processing of secondary metallic copper-containing smelt materials |
| 06/17/1986 | US4595574 Agglomerating carbonaceous substance and zinc compound, coating with calcium compound onto hearth layer in sintering apparatus, metallizing, vaporizing zinc in reducing atmosphere, oxidizing zinc vapor |