| Patents for C22B 17 - Obtaining cadmium (340) |
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| 04/28/2004 | CN1147602C Preparation process of radoiactive isotope cadmium-109 |
| 12/17/2003 | EP1371739A1 Process for purifying zinc and rectifying column for purifying zinc |
| 10/22/2003 | EP0828552B1 Process for recovery of metal ions |
| 09/17/2003 | EP1229977A4 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 08/14/2003 | US20030150293 Apparatus for enhanced purification of high-purity metals |
| 08/13/2003 | EP1335032A1 Vacuum distillation method and apparatus for enhanced purification of high-purity metals like indium |
| 08/07/2003 | US20030145683 Method and apparatus for enhanced purification of high-purity metals |
| 08/05/2003 | US6602322 Mixing metal-containing dust and carbonaceous fines to form a particulate mixture; heating to reduce and release volatile metals and alkali metals therefrom along with gaseous products; collecting released metals and gases, reoxidizing |
| 06/05/2003 | US20030105380 Preparing an aqueous suspension of the solid or semisolid waste material, separating the solid and liquid material to obtain solid waste and liquid waste solution, collecting solid waste, repeating above steps, acidifying liquid waste |
| 06/03/2003 | US6572782 Process for recycling CdTe/Cds thin film solar cell modules |
| 04/15/2003 | US6547847 Introducing through a injection level, a comburent gas; introducing material to be transformed, fuel, comburent and slag inoculants and additives and material-carrying gases, inert strirring gases; extracting process gases, tapping |
| 03/19/2003 | EP1292716A2 Method of processing zinc, cadmium and lead bearing furnace flue dust by heating in the presence of carbonaceous material |
| 03/13/2003 | WO2003020989A1 High temperature metal recovery process |
| 03/13/2003 | US20030047035 High temperature metal recovery process |
| 02/11/2003 | US6517789 Method for reclaiming constituents from an industrial waste stream |
| 02/04/2003 | US6514457 Extraction of impurities from structures containing mercury, cadmium, zinc, or tellurium, and impurities |
| 10/30/2002 | EP1251940A2 A method for treatment of flue gas cleaning products |
| 10/15/2002 | US6464753 Furnace flue dust processing method |
| 08/14/2002 | EP1229977A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 08/14/2002 | CN1363697A Vacuum distiller for reclaiming used batteries |
| 08/01/2002 | US20020100345 Continuous process for transforming material, yielding controlled composition products and apparatus apt to carry out such process |
| 07/23/2002 | US6423281 Adding a first fraction of a zinc oxide (zno)/ammonium chloride (nh4cl) solution to given amount of water to form an intermediate solution and zno precipitate, and the second fraction to the intermediate solution; from industrial waste |
| 06/27/2002 | WO2002050320A1 Process for purifying zinc and rectifying column for purifying zinc |
| 06/27/2002 | WO2001098547A3 Method of processing zinc, cadmium and lead bearing furnace flue dust by heating in the presence of carbonaceous material |
| 05/02/2002 | EP1200633A1 $i(THLASPI CAERULESCENS) SUBSPECIES FOR CADMIUM AND ZINC RECOVERY |
| 03/27/2002 | CN1341761A Preparation process of radioactive isotope cadmium-109 |
| 03/14/2002 | US20020030035 Thermoset resins to provide oxygen protection packaging for electronics or food |
| 03/13/2002 | EP1187224A1 Recycling method for CdTe/CdS thin film solar cell modules |
| 01/31/2002 | US20020011133 Furnace flue dust processing method |
| 01/29/2002 | CA2038767C Metallic vapor condenser capable of circulating a liquid metal |
| 01/24/2002 | CA2506780A1 Recovery of cadmium from zinc-containing acid soluble ore using precipitation method |
| 01/16/2002 | CN1330985A Innocuous recovering process for waste dry battery |
| 12/27/2001 | WO2001098547A2 Method of processing zinc, cadmium and lead bearing furnace flue dust by heating in the presence of carbonaceous material |
| 11/22/2001 | WO2001056684A9 A method for treatment of flue gas cleaning products |
| 08/09/2001 | WO2001056684A1 A method for treatment of flue gas cleaning products |
| 07/24/2001 | US6264903 Leaching; zinc displacement |
| 06/28/2001 | US20010005496 Adding a first fraction of a zinc oxide (ZnO)/ammonium chloride (NH4Cl) solution to given amount of water to form an intermediate solution and ZnO precipitate, and the second fraction to the intermediate solution; from industrial waste |
| 05/16/2001 | EP1099746A2 Continuous process for transforming material and apparatus apt to carry out such process |
| 05/08/2001 | US6228143 Via preheating the sweep gas above auto-ignition temperature of polymers and controlling the oxygen content within oxidizer to reduce risk of explosion; cadmium, nickel, and iron remain for subsequent processing; pyrometallurgy |
| 04/05/2001 | WO2001023627A1 Process to selectively recover metals from waste dusts, sludges and ores |
| 04/05/2001 | WO2001023067A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 04/05/2001 | CA2384631A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 08/23/2000 | CN1055731C Device and method for recovery of cadmium and nickel |
| 06/02/2000 | WO2000031308A1 Thlaspi caerulescens subspecies for cadmium and zinc recovery |
| 06/02/2000 | CA2352179A1 Thlaspi caerulescens subspecies for cadmium and zinc recovery |
| 12/23/1999 | WO1999056867A3 Integrated fixation systems |
| 11/11/1999 | WO1999056867A2 Integrated fixation systems |
| 10/06/1999 | EP0946767A1 Recovery of iron products from waste material streams |
| 07/01/1999 | WO1999033137A1 Integrated fixation systems |
| 06/19/1999 | CA2225367A1 Containerized metal fixation apparatus |
| 12/22/1998 | US5851490 Method for utilizing PH control in the recovery of metal and chemical values from industrial waste streams |
| 12/15/1998 | CA2096665C Pyrometallurgical method for recovering volatile metals from sulfidic raw materials |
| 10/29/1998 | WO1998048066A1 Method for utilizing ph control in the recovery of metal and chemical values from industrial waste streams |
| 10/29/1998 | CA2293687A1 Method for utilizing ph control in the recovery of metal and chemical values from industrial waste streams |
| 07/29/1998 | EP0828552A4 Process for recovery of metal ions |
| 06/16/1998 | US5766478 Water-soluble polymers for recovery of metal ions from aqueous streams |
| 03/18/1998 | EP0828552A1 Process for recovery of metal ions |
| 03/17/1998 | US5728854 Method for separating iron from nickel and/or cadmium from a waste containing the same |
| 02/25/1998 | CN1037531C Method for producing easily volatile metals, such as zinc, lead and cadmium of sulphidic raw materials |
| 12/11/1997 | WO1997046722A1 Recovery of iron products from waste material streams |
| 12/11/1997 | CA2257910A1 Recovery of iron products from waste material streams |
| 11/04/1997 | US5683488 Method for producing an iron feedstock from industrial furnace waste streams |
| 10/29/1997 | EP0802884A1 Recovery of chemical values from industrial wastes |
| 09/16/1997 | US5667553 Methods for recycling electric arc furnace dust |
| 07/15/1997 | US5647876 Method of removing volatile metals from slag using an acid wash |
| 04/02/1997 | EP0765944A1 Method of removing volatile metals from gasification slag particles using an acid wash |
| 03/27/1997 | CA2180308A1 Method of removing volatile metals from slag using an acid wash |
| 12/05/1996 | WO1996038220A1 Process for recovery of metal ions |
| 09/17/1996 | US5556447 Detoxification of mercury contaminated soils with vaporization, contacting with carbon, separation and recovering mercury by heating, purging and condensing |
| 07/23/1996 | US5538532 Methods for recycling electric arc furnace dust |
| 04/02/1996 | US5503811 Condensation of vaporized metal upon cooling contaminated heated argon flowing through mass transfer unit, regenerating unit; recycling |
| 11/16/1995 | WO1995030626A1 Recovery of chemical values from industrial wastes |
| 11/16/1995 | CA2188658A1 Recovery of chemical values from industrial wastes |
| 09/26/1995 | US5453111 Method for separation of metals from waste stream |
| 08/01/1995 | US5437705 Placing scrap in inert atmosphere in furnace with oxygen getter, heating in stages to vaporize water, other substances, cadmium, condensing cadmium in connected chamber, recovering nickel from furnace |
| 06/28/1995 | EP0659893A1 Process for extracting and concentrating of cadmium from concentrated sulfuric effluents with a low or medium content of cadmium |
| 04/04/1995 | US5403380 Method for producing easily volatile metals, such as zinc, lead, mercury and cadmium, of sulfidic raw materials |
| 11/16/1994 | CN1095112A Device and process for the recovery of cadmium and nickel |
| 07/27/1994 | EP0608098A1 Process for the recovery of nickel and/or cadmium and apparatus therefor |
| 04/13/1994 | CN1024204C Method and installation for recovery of cadmium by reduction and distillation |
| 01/05/1994 | CN1080325A Method for producing easily volatile metals, such as zinc, lead and cadmium, of sulphidic raw materials |
| 11/24/1993 | EP0570942A1 Method for producing easily volatile metals, such as zinc, lead and cadmium, of sulfidic raw materials |
| 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. |
| 07/21/1993 | EP0551992A1 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 |
| 04/28/1993 | CN1020382C Separation of zn-cd alloy by vacuum distillation |
| 04/06/1993 | US5199975 Method for processing used battery |
| 02/23/1993 | US5188795 Battery recycling, reduced heat loss |
| 12/02/1992 | CN1019317B Method of iron removing in the process of cadmium extraction |
| 08/05/1992 | CN1063314A Reduction, distillation and recovery method of cadmium and its installation |
| 03/18/1992 | EP0474956A1 Metallic vapor condenser capable of circulating a liquid metal |
| 05/08/1991 | CN1051202A Separation of zn-cd alloy by vacuum distillation |
| 04/16/1991 | CA1282965C Zinc recovery from furnace dust |
| 03/19/1991 | CA1281553C Electrothermal preparation and refining process of metals derived from scrap,and related installation |
| 03/27/1990 | US4911905 Method of forming stoichiometric II-VI compounds of high purity |
| 01/17/1990 | CN1038843A Method of iron removing in the process of cadmium extraction |
| 05/30/1989 | CA1254718A1 Purification of cd and te by zone refining |
| 02/07/1989 | CA1249885A1 Membrane processes for metal recovery and pollution control in metal process industries |
| 01/24/1989 | US4800069 Haliding a metal ferrite |
| 01/26/1988 | US4721605 Selective removal of metals from aqueous solutions with dithiophosphinic acids |