| 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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| 09/21/1994 | EP0616039A1 Separation and recovery of metal values from natural bitumen ash |
| 09/20/1994 | US5348713 Leaching with aqueous sulfuric acid, treating leach slurry with zinc concentrate under oxidizing and then reducing conditions, zinc flotation, reducing leach, copper flotation, liquid-solid separation, lead flotation, recovery of zinc |
| 09/14/1994 | CN1092110A Method for separating actinide elements from concentrated high-radioactive waste liquid |
| 09/08/1994 | DE4405022A1 Method for extracting metals which can be utilised safely from radioactively contaminated mixed metal scrap |
| 09/06/1994 | CA2001173C Relating to the recovery of silver |
| 09/01/1994 | WO1994019501A1 Process for the treatment of electric arc furnace dust |
| 09/01/1994 | DE4306207A1 A process for melting down plastic-contaminated scrap with fractional decomposition of the organic fractions in a shaft furnace |
| 09/01/1994 | DE4305774A1 Process for recovering metal from scrap sheet |
| 08/31/1994 | EP0613198A1 Method for recovering lithium cell materials |
| 08/31/1994 | EP0612853A1 Method for recovering metals from used exhaust gas catalysts |
| 08/23/1994 | CA1331515C Recovery of silver from photo sensitive materials |
| 08/18/1994 | WO1994018348A1 Process for recycling dust collected during the production of steel in an electric arc furnace |
| 08/18/1994 | CA2117758A1 Process for recycling the filter dust in an electric arc furnance for producing steel |
| 08/17/1994 | EP0610576A1 Method for recuperating glass and metal from slags remaining in an apparatus for burning wastes |
| 08/16/1994 | CA1331492C Common separation of contaminating elements from electrolyte solutions of valuable metals |
| 08/11/1994 | CA2114486A1 Method of recovering glass and metal from solid residues produced in refuse incineration plants |
| 08/10/1994 | CN1090604A Method for extracting noble metal and value able metal from tin anode mud |
| 08/09/1994 | US5336297 Process for the treatment of electric arc furnace dust |
| 08/03/1994 | EP0608695A1 Method for utilizing smelter waste containing zinc and other valuable metals |
| 08/02/1994 | CA1331097C Process for melting metal scrap and apparatus for performing the process |
| 07/27/1994 | EP0608098A1 Process for the recovery of nickel and/or cadmium and apparatus therefor |
| 07/20/1994 | CN1089523A Process for the recovery of group VIII noble metals |
| 07/13/1994 | EP0605748A1 Process and apparatus for the treatment of catalysts on metal supports |
| 07/12/1994 | US5328669 Extraction of precious metals from ores and other precious metal containing materials using halogen salts |
| 06/29/1994 | CN1088622A A method of preparing an alloy using aluminium debris |
| 06/29/1994 | CN1025223C Germanium extracting technology from coal containing same |
| 06/28/1994 | US5324851 Recovery of palladium catalyst |
| 06/28/1994 | US5324341 Method for chemically reducing metals in waste compositions |
| 06/22/1994 | CN1088268A Process of recoverying magnesium from magnesium slag |
| 06/21/1994 | US5322547 Method for indirect chemical reduction of metals in waste |
| 06/14/1994 | US5320665 Leaching with thiourea, cementation with sulfur dioxide present prior to contact with steel |
| 06/08/1994 | EP0600066A1 Method for detoxication of combustion residues by removing the movable toxic compounds and by binding and concentrating said compounds obtained from treatment solutions |
| 06/01/1994 | CN1087389A Method for recovery of copper and derived polybasic aluminum chloride by treating acid copper chloride waste liquid |
| 06/01/1994 | CN1087299A Raw material for producing ferrite dust for friction elements and method of reducing the same |
| 06/01/1994 | CN1024810C Detoxication and comprehensive utilization of waste residue and gangue containing chromium titanium nickel and vanadium |
| 05/31/1994 | US5316751 Methods for mine tailing clean-up using recovery technologies |
| 05/26/1994 | WO1994011540A1 Process for producing alloy utilizing aluminum dross |
| 05/26/1994 | WO1994011538A1 Process for remediation of lead-contaminated soil and waste battery casings |
| 05/26/1994 | CA2148923A1 The method of manufacturing alloy by using aluminum residuum |
| 05/26/1994 | CA2124005A1 Method for remediation of lead-contaminated soil and waste battery casings |
| 05/25/1994 | CN1024687C Process for recovering Au and Pd from waste catalyst and liquid delivering valve |
| 05/25/1994 | CN1024686C Process for recovering platinum from waste catalyst |
| 05/25/1994 | CN1024685C Process for recovering Pd from waste Pd-C catalyst and burner system |
| 05/25/1994 | CN1024684C Detoxication method of Cr slag leaching smelting |
| 05/24/1994 | US5314550 Recovery of aluminum and hydrocarbon values from composite energetic compositions |
| 05/18/1994 | CN1086894A Scrap conveyor |
| 05/18/1994 | CN1086795A Technology for recovering hexavalence Cr by sedimentation-ion exchange |
| 05/11/1994 | EP0417216B1 Treatment of aluminum reduction cell linings combined with use in aluminum scrap reclamation |
| 05/11/1994 | CN1024469C Method of nickel retrieved from waste catalyst by pyrogenic process |
| 05/10/1994 | US5310412 Melting metal particles and dispersing gas and additives with vaned impeller |
| 05/03/1994 | US5308375 Process for recovery of free aluminum from aluminum dross or aluminum scrap using plasma energy with oxygen second stage treatment |
| 05/03/1994 | CA1329149C Process of purifying the exhaust gases from a sintering plant |
| 04/28/1994 | WO1994009332A1 Scrap conveyor |
| 04/28/1994 | WO1994009163A1 Method for continuously melting down scrap metal |
| 04/28/1994 | WO1994008892A1 Ash ammonia stripping |
| 04/27/1994 | EP0594470A1 Process for the recovery of lead from the active material of waste batteries and electric furnace to carry out the process |
| 04/27/1994 | EP0460203B1 Method for recovering metals from waste liquors |
| 04/27/1994 | CN1085832A Process flow for treating leached-out chromium residue |
| 04/26/1994 | CA1328842C Process for recovery of metals from metal / plastic waste and the like |
| 04/21/1994 | DE4332743A1 Treatment of used catalysts with precious metal coatings, esp. from exhaust gas cleaners - with catalyst pressed and ground and metal sepd. under vacuum in magnetic separator |
| 04/20/1994 | EP0593352A1 Method of decontaminating soils polluted by heavy metals |
| 04/19/1994 | US5304230 Method of disposing of organic and inorganic substances and a plant for carrying out the method |
| 04/14/1994 | WO1994008058A1 Method for hydrometallurgical processing of zincky byproducts |
| 04/14/1994 | WO1994008057A1 Method for the enhanced recovery of zinc oxide |
| 04/13/1994 | CN1024204C Method and installation for recovery of cadmium by reduction and distillation |
| 04/12/1994 | US5302360 Adding elemental antimony to inactivated antimony pentahalide catalyst solution to yield antimony trihalide; crystallization; separation of impurities; halogenation |
| 04/12/1994 | US5301620 Reactor and method for disassociating waste |
| 03/31/1994 | WO1994007277A1 Method for recycling metal containing electrical components |
| 03/31/1994 | DE4232285A1 Working-up material contg. iron oxide and/or non-ferrous heavy metal cpds. - using pulsed reducing flame fed directly into furnace |
| 03/30/1994 | CN1084576A Extraction of high-quality ammonium para-tungstate from tungsten slurry and hard-to-dress tungsten material |
| 03/30/1994 | CN1084488A Process and plant for removing lead, cadmium and zinc from dusts |
| 03/29/1994 | US5298227 Mixing melting furnace effluent with cooling air to condense metal compounds, filtration, incineration |
| 03/23/1994 | EP0588235A1 Process for recovering lead from lead-containing raw materials |
| 03/16/1994 | EP0586910A1 Process and installation for removing lead, cadmium and zinc from dusts |
| 03/16/1994 | EP0410996B1 A process of recovering non-ferrous metal values, especially nickel, cobalt, copper and zinc, by using melt and melt coating sulphation, from raw materials containing said metals |
| 03/15/1994 | US5294245 Melting and mixing metals with impellers |
| 03/15/1994 | US5294244 Heating the air bag in a furnace and removing the nonaluminum parts prior to reaching the melting point of the aluminum |
| 03/15/1994 | CA2042020C Apparatus for melting down chips |
| 03/12/1994 | CA2106014A1 Process for the recovery of lead, especially the lead contained in active substances of used batteries and in electric furnaces used for implementing said process |
| 03/09/1994 | EP0585701A1 Method of treating nickel-cadmium of nickel-hydride cells |
| 03/09/1994 | CN1083418A Process for recovering useful matter from organosilicon chemical waste residue |
| 03/03/1994 | WO1994004711A1 Charging metal solids into molten metal |
| 03/02/1994 | EP0584964A1 Process for the recovery of group VIII noble metals |
| 03/01/1994 | CA2101963A1 Process for the recovery of group viii noble metals |
| 02/23/1994 | CN1082617A Method for extracting V2O5 from vanadium slag |
| 02/23/1994 | CN1023870C Method of extracting zinc from zinc scruff |
| 02/17/1994 | WO1994003652A1 Method of making metal of high purity from scrap of worked metal |
| 02/15/1994 | US5286465 Leaching with hot concentrated sulfuric acid, separating precipitate by filtration, washing with volatile liquid, collecting filtered acid and washings |
| 02/15/1994 | US5286278 Mixing with lime, dolomite, magnetite, dunite, olivine and/ or bauxite, pressurization |
| 02/09/1994 | EP0581995A1 Recovery of valuable materials |
| 02/08/1994 | US5284505 Method for recovering metallic nickel from ferric chloride waste liquid |
| 02/08/1994 | US5284503 Process for remediation of lead-contaminated soil and waste battery |
| 02/03/1994 | WO1994002653A1 Novel method for recovering metals from materials containing refractory and/or transition metals |
| 02/03/1994 | WO1994002263A1 Treatment of solid material |
| 02/03/1994 | WO1994002210A1 Treatment of polyvinylchloride |
| 02/03/1994 | WO1994001995A1 An improved compost mixing and aerating apparatus |
| 02/03/1994 | DE4325531A1 Reduced ferrite powder for vehicle brake system friction elements - includes oxide(s) of silicon, magnesium, calcium, aluminium and zinc. |
| 02/02/1994 | EP0581090A2 Method of treating metal-containing sludges |
| 02/01/1994 | US5282938 Air pollution control |
| 02/01/1994 | US5282881 Smelting of metallurgical waste materials containing iron compounds and toxic elements |