| 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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| 01/27/1994 | DE4224265A1 Process for separating metal particles from slag - using impact energy to convert non-magnetisable structure to magnetisable structures |
| 01/26/1994 | EP0580533A1 Process for the thermal treatment of spent potlinings from Hall-Heroult electrolytic cells |
| 01/26/1994 | CN1023611C Blast furnace gas wash waste water zinciferous water scale zinc-smelting method |
| 01/25/1994 | US5280858 Process for working up waste active-mass of consumed, broken accumulator plates deriving from rubbish-shoots into active-mass |
| 01/19/1994 | EP0579591A1 Process for the production of a metal melt |
| 01/18/1994 | US5279643 Agglomeration with aluminum refining sludge; reduction, separation |
| 01/18/1994 | US5279464 Comminuting metal containing and catalyst; separation |
| 01/17/1994 | CA2100602A1 Process for the production of a metal melt |
| 01/12/1994 | EP0578347A1 Separation of metal ions on an anion exchange resin by chromatographic elution |
| 01/12/1994 | CN1080664A Process for producing electrolytic zinc copper by recoverying waste copper slag |
| 01/11/1994 | CA1326007C Supported heteropolycyclic compounds in the separation and removal of late transition metals |
| 01/07/1994 | CA2099815A1 Separation of metal ions on an anion exchange resin by chromatographic elution |
| 01/06/1994 | WO1994000533A1 Treatment of waste |
| 01/05/1994 | EP0576977A2 Process for cooling and cleaning of hot dust, dioxine and other toxines containing flue gases |
| 12/29/1993 | EP0576416A1 Process for producing aluminium |
| 12/29/1993 | EP0576255A1 Process for recovery of free aluminium from aluminium dross or aluminium scrap using plasma energy with oxygen second stage treatment |
| 12/29/1993 | EP0576254A2 Reactive non-metallic product recovered from dross |
| 12/29/1993 | EP0575768A1 Method of recovering lead from recycable lead-containing raw material |
| 12/23/1993 | WO1993025716A1 Method for detoxication of combustion residues by removing the movable toxic compounds and by binding and concentrating said compounds obtained from treatment solutions |
| 12/23/1993 | CA2114137A1 Method for detoxication of combustion residues by removing the movable toxic compounds and by binding and concentrating said compounds obtained from treatment solutions |
| 12/23/1993 | CA2098776A1 Reactive non-metallic product recovered from dross |
| 12/22/1993 | CN1023235C Recovery and processing method of waste hand alloy material |
| 12/21/1993 | US5271910 Process of treating metal chloride wastes |
| 12/21/1993 | US5271909 Method of tellurium separation from copper electrorefining slime |
| 12/16/1993 | DE4218863A1 Treating granular material or waste water loaded with heavy metals - by binding metals with chelating agent and passage through ion exchange system |
| 12/15/1993 | EP0574035A1 Continuous feed shaft retort process and apparatus for recovery of non-ferrous metals |
| 12/15/1993 | CN1079510A Treatment method of high arsonium lead anode mud wet process |
| 12/09/1993 | WO1993024667A1 A method of treating dross materials in metallurgical melting processes |
| 12/09/1993 | WO1993024251A1 A method of disposing of medical sharps |
| 12/09/1993 | WO1993024250A1 Method for decontaminating soils polluted by metals |
| 12/09/1993 | WO1993024249A1 Process for decontamination of metal-polluted earth |
| 12/09/1993 | CA2136994A1 A method of treating dross materials in metallurgical melting processes |
| 12/09/1993 | CA2136847A1 Process for the decontamination of lands polluted by metals |
| 12/09/1993 | CA2113826A1 Method for decontaminating soils polluted by metals |
| 12/08/1993 | EP0572769A2 Process for the conversion of waste incineration residues to a non-polluting product and useful for constructional purposes |
| 12/08/1993 | EP0572444A1 Process and device for removing metal from flue dust |
| 12/08/1993 | CN1023025C Method of extracting silver and gold from anode argillaceous nitric acidic residue of tin soldering |
| 12/07/1993 | CA1324977C Process of treating residues from the hydrometallurgical production of zinc |
| 12/02/1993 | CA2084053A1 Method of disposing of medical sharps |
| 12/01/1993 | CN1022933C Dry process for cold briquetting of metallurgical dust |
| 11/25/1993 | WO1993023579A1 Process and device for the recovery and reutilisation of metallic compounds |
| 11/13/1993 | CA2095946A1 Method for processing refuse incineration products to give products which are environmentally acceptable and can be used especially for building purposes |
| 11/11/1993 | WO1993022001A1 Method for indirect chemical reduction of metals in waste |
| 11/11/1993 | CA2135082A1 Method for indirect chemical reduction of metals in waste |
| 11/09/1993 | US5260039 Process for the two-phase extraction of metal ions from phases containing solid metal oxides, agents and the use thereof |
| 11/09/1993 | US5259867 Method of treating dross materials in metallurgical melting processes |
| 11/09/1993 | US5259863 Method and apparatus for the incineration of garbage and refuse |
| 11/09/1993 | US5259697 Composition and process for forming low permeability barriers for waste disposal sites |
| 11/03/1993 | EP0568407A1 Process for reclaiming used Rhenium |
| 11/03/1993 | CN1077993A Fluoride method for recovering Nd-Fe-B rare earth permanent magnet spent material |
| 11/03/1993 | CN1077908A Recovery of rh from residue of reaction of carbonation |
| 11/02/1993 | CA1323854C Process for the recycling of electrical batteries, assembled printed circuit boards and electronic components |
| 10/28/1993 | WO1993020898A1 High temperature process and plant for treatment and resources recovery of hazardous waste |
| 10/27/1993 | CN1022578C Treatment and use of waste residue and waste liq. from Cd-Ni cell |
| 10/26/1993 | US5256186 Method for the treatment of dusts and concentrates |
| 10/20/1993 | CN1077499A Process for refining bismuth |
| 10/20/1993 | CN1077498A Technological process of treating antimony rich lead with fire-method |
| 10/15/1993 | CA2093693A1 Process for refining bismuth |
| 10/14/1993 | WO1993020252A1 Method and device for processing free-flowing materials |
| 10/14/1993 | CA2133328A1 Method and device for processing free-flowing materials |
| 10/13/1993 | EP0564862A1 Process for recovering rhodium from waste material generated in carbonylation reactions |
| 10/13/1993 | CN1022423C Disposal method of tallings water contained Cn for a chlorinated gold extracting shop |
| 10/13/1993 | CN1022422C Method for recovering scrap battery lead |
| 10/12/1993 | US5252258 Method of recovering and storing radioactive iodine by freeze vacuum drying process |
| 10/07/1993 | DE4211164A1 Verfahren und Vorrichtung zum Behandeln von riesel- oder fließfähigem Material Method and apparatus for treating pourable or flowable material |
| 10/06/1993 | EP0564401A2 Method of selective recovery of ferrous and nonferrous metals from industrial wastes and scrap home electric appliances |
| 09/30/1993 | WO1993019213A1 Process and plant for removing lead and zinc from metallurgical-works dust |
| 09/30/1993 | DE4227568A1 Reclamation of chromium@, PCB and plastics from discarded computers - by direct and indirect heating in a blast furnace with removal and, if necessary destruction of components at different temps. |
| 09/30/1993 | DE4209891A1 Verfahren zur Aufbereitung von Zink und Blei enthaltenden Hüttenwerksstaub Process for the preparation of zinc and lead-containing foundry dust |
| 09/29/1993 | CN1076732A Purifying method of waste slag containing industrial alumina |
| 09/23/1993 | DE4209292A1 Spent metal and/or oxide catalyst regeneration by mechanical crushing - with specified energy density, esp. for catalyst used in oxidn., hydrogenation or hardening of fat, oil or fatty acid |
| 09/21/1993 | US5246681 Process for the removal of cadmium from solutions of phosphoric acid |
| 09/21/1993 | US5246591 Separation of metal ions on an anion exchange resin by chromatographic elution |
| 09/14/1993 | US5245627 Use of a radiating arc furnace for treating a dross containing a metal in order to recover this metal |
| 09/14/1993 | US5244777 Method of recovering silver from photographic processing solutions |
| 09/09/1993 | DE4207265A1 Prepn. of foundry filter dust for environment-friendly disposal - in which dust is mixed with binding material, pressed to form solid bodies, and fused in blast furnace |
| 09/08/1993 | EP0558510A1 Slag processing in a rotary arc furnace. |
| 09/01/1993 | EP0557312A1 Direct sulphidization fuming of zinc. |
| 08/26/1993 | WO1993017135A1 Recovery of non-ferrous metals from dross |
| 08/26/1993 | DE4205096A1 Solid and liq. waste recovery - comprises adding dry matter contg. top gas dust to homogenised mixt. for thermal processing |
| 08/11/1993 | EP0555128A1 Recovery of molybdenum and vanadium from used catalysts |
| 08/10/1993 | US5234669 Mixing smelter by-product with hydrated lime to form paste, forming paste into agglomerates, roasting in air, oxidizing, treating with basic aqueous lixiviant solution |
| 08/10/1993 | US5234492 Cupellation |
| 08/04/1993 | CN1074947A Wet desulfuration of sulfurous iron ore slag and process for extracting associated valuable metals |
| 08/04/1993 | CN1074946A Process for extracting nickel oxide from scrap alumino-nickel powder |
| 08/04/1993 | CN1074888A Method for comprehensive utilization of chrome slag by back-melting |
| 08/03/1993 | US5232489 Process for the recovery of metals and coating materials from composite materials |
| 08/03/1993 | US5232486 Heating the alloys in hermetic sealed furace at low pressure to vaporizing the zinc and condensing to solids |
| 07/29/1993 | DE4135368A1 Incinerator filter dust - is sieved to give a coarse fraction with low neutral salts and heavy metal cpd. content to reduce vol. for special disposal |
| 07/22/1993 | WO1993014030A1 Method for the recovery of zinc oxide |
| 07/21/1993 | EP0551992A1 Process for recovering valuable metals from an iron dust |
| 07/20/1993 | CA2030727C Rotary arc furnace for treating aluminum dross |
| 07/18/1993 | CA2086857A1 Process for recovering valuable metals from an iron dust |
| 07/14/1993 | EP0551155A1 Process for recovering zinc and lead from flue dusts from electrical steel works and for recycling said purified metals to the furnace, and installation for implementing said process |
| 07/07/1993 | CN1073984A Method for recovering low-concentration gold |
| 07/06/1993 | US5224986 Procss for the recovery of titanium values |
| 07/06/1993 | US5224984 Process for treatment and purification of waste gases from a secondary aluminum melting plant |
| 06/24/1993 | DE4142107A1 Recovery of metals from scrap esp. underground cable - with different non-ferrous metals separated by m.pt. in revolving tube furnace, after removal of ferrous metal |
| 06/23/1993 | EP0548042A1 Method of producing metal melts, in particular steel melts |
| 06/22/1993 | US5221512 Apparatus for preheating and removing organic materials from scrap iron |