| Patents for C22B 13 - Obtaining lead (1,881) |
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| 02/05/2002 | CA2129441C Method of processing lead-bearing materials |
| 01/31/2002 | US20020011133 Furnace flue dust processing method |
| 01/29/2002 | CA2038767C Metallic vapor condenser capable of circulating a liquid metal |
| 01/23/2002 | EP1173626A1 Hydrometallurgical processing of lead materials in the presence of fluotitanate compounds |
| 01/22/2002 | US6340423 Hydrometallurgical processing of lead materials using fluotitanate |
| 01/16/2002 | CN1331760A Method for extracting anions of IVB to VIII metals using alkyl-substituted 1,3-diaminopropanes |
| 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 |
| 12/05/2001 | CN1325460A Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 11/22/2001 | WO2001056684A9 A method for treatment of flue gas cleaning products |
| 11/21/2001 | EP1156706A1 Article having a circuit soldered with parts and method for recycling wastes of the same |
| 11/20/2001 | US6319482 Treatment of fly ASH/APC residues including lead salt recovery |
| 11/07/2001 | EP1151646A1 Article having a circuit soldered with parts and method for recycling wastes of the same |
| 10/25/2001 | WO2001079570A1 Method for eliminating bismuth from molten lead by adding calcium-magnesium alloys |
| 10/25/2001 | CA2405733A1 Method for eliminating bismuth from molten lead by adding calcium-magnesium alloys |
| 10/18/2001 | US20010030389 Apparatus for producing reduced iron |
| 10/17/2001 | EP1144699A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 09/18/2001 | US6290897 Pumpless silver recovery system |
| 08/29/2001 | CN1310241A Reduction and sulfonium making smelting process with non-ferrous sulfide ore and sulfide containing material |
| 08/09/2001 | WO2001056684A1 A method for treatment of flue gas cleaning products |
| 08/02/2001 | WO2001055460A1 Method for reprocessing dust or dust mixtures |
| 08/02/2001 | CA2398349A1 Method for reprocessing dust or dust mixtures |
| 08/01/2001 | EP1119646A1 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 08/01/2001 | EP1119645A1 Process and apparatus for recovering metal material from waste material |
| 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 |
| 06/05/2001 | CA2207742C Improved method for the recovery of lead from exhausted lead acid storage batteries |
| 05/01/2001 | CA2156295C Process for the treatment of electric arc furnace dust |
| 04/12/2001 | WO2001025495A1 Method for pyrometallurgical treatment of waste from iron and steel production |
| 04/05/2001 | WO2001023067A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 04/05/2001 | DE19946430A1 Verfahren zur Verwertung von Eisen, Zink und Blei enthaltenden Sekundärrohstoffen Process for the recovery of iron, zinc and lead-containing secondary raw materials |
| 04/05/2001 | CA2384631A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 04/04/2001 | EP1088904A1 Method of treating iron, zinc and lead bearing secondary materials such as steelmaking furnace dusts |
| 03/29/2001 | WO2001021846A1 Recovery of metallic lead and salt value from lead ores or from spent lead-acid storage batteries with acetic acid lixiviant |
| 03/28/2001 | CA2321311A1 Method of utilizing secondary raw materials containing iron, zinc and lead |
| 03/21/2001 | CN1288066A Method and equipment for prodn. of reduction iron |
| 03/13/2001 | US6200521 Waste recovery system |
| 02/13/2001 | CA2160488C Recovery of metals from sulphidic material |
| 01/31/2001 | CN1061322C Process for regenerating accumulator desulfurating agent |
| 01/17/2001 | CN1280203A Rear earth flux for aluminium and aluminium alloy |
| 01/09/2001 | US6171544 Multiple coherent jet lance |
| 12/19/2000 | CA2132548C Process and plant for removing lead and zinc from metallurgical-works dust |
| 12/13/2000 | CN1059472C Method and apparatus for suspension smelting |
| 12/05/2000 | US6155965 Smelting fly ash to a leaching resistant slag by oxidizing with added a carbon or hydrocarbonaceous substance which supplies additional energy, also reducing zinc and lead contend |
| 12/05/2000 | CA2076613C Recovery of thallium from metallurgical flue dusts |
| 11/28/2000 | US6153156 Method for purifying leady oxides |
| 11/22/2000 | CN1274013A Smelting method of regenerated lead |
| 11/15/2000 | CN1273279A Flash-speed direct smelting method for reflection furnace |
| 11/09/2000 | WO2000066796A1 Method for treating metal-containing waste by pyrometallurgy |
| 10/19/2000 | WO2000061825A1 Hydrometallurgical processing of lead materials in the presence of fluorotitanate compounds |
| 10/19/2000 | CA2368868A1 Hydrometallurgical processing of lead materials in the presence of fluorotitanate compounds |
| 10/17/2000 | US6132488 Process of treating waste containing zinc oxide |
| 10/11/2000 | EP1042518A1 Oxidising elutriation of contaminated sludge containing iron with separation of zinc and lead |
| 10/11/2000 | CN1269425A Multi-condensed jet-flow spray gun |
| 10/04/2000 | EP1041341A1 Multiple coherent jet lance |
| 09/19/2000 | US6120577 Separating and recovering iron, zinc and lead from steel plant waste oxides, comprising mixing waste oxides and sludge which contains iron zinc and lead, adding coke particles, briquetting the mixture, firing to reduce iron oxide to iron |
| 09/19/2000 | CA2014180C Liquid treatment installation using a gas, and process for the same |
| 08/24/2000 | DE19859683C1 Verfahren zur Extraktion von Anionen A process for extraction of anions |
| 08/09/2000 | EP0909335B1 Treatment of fly ash/apc residues including lead salt recovery |
| 07/20/2000 | WO2000042829A1 Article having a circuit soldered with parts and method for recycling wastes of the same |
| 07/12/2000 | CN1054401C Antimony-eliminating method for high-antimony coarse-lead alloy |
| 07/06/2000 | WO2000039350A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 07/06/2000 | CA2355853A1 Method of extracting anions of metals of groups ivb to viii by means of alkyl-substituted 1,3-diaminoprpopanes |
| 07/05/2000 | CN1258753A Production of regenerated lead, red lead and lead nitrate with waste lead-acid accumulator |
| 07/04/2000 | US6083294 Method of treating dust exhausted from melting furnace |
| 05/31/2000 | EP0641865B1 Method of reprocessing lead-containing materials |
| 05/25/2000 | WO2000017406A3 Method for extracting lead from lead-containing raw materials |
| 05/02/2000 | CA2138777C Production of metals from minerals |
| 04/12/2000 | EP0991787A1 Method for treating molten lead with calcium |
| 03/30/2000 | WO2000017406A2 Method for extracting lead from lead-containing raw materials |
| 02/24/2000 | WO2000009771A1 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 02/24/2000 | WO2000009770A1 Process and apparatus for recovering metal material from waste material |
| 02/24/2000 | CA2339851A1 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 02/02/2000 | EP0976843A1 Treatment of steel plant waste metal oxides by firing the same in the form of coke containing briquettes |
| 02/02/2000 | CN1049013C Solder recovery |
| 01/13/2000 | DE19830520A1 Process and reactor for extracting at least one nonferrous metal by direct, batch-mode melting |
| 01/12/2000 | CN1048289C Method for integrated recovery of gold, silver, Pb and Sn as valuabele metals from chloride slag |
| 01/12/2000 | CN1048250C Macrocyclic polyether cryptand joined to inorganic carrier, and process for removing, separating and concentrating metals |
| 12/23/1999 | WO1999066105A1 Process for recovery of lead from spent batteries |
| 10/20/1999 | CN1045795C Method for recovering platinum and lead in anode mud from electrolytic hydrogen peroxide solution production |
| 10/06/1999 | EP0946767A1 Recovery of iron products from waste material streams |
| 09/25/1999 | CA2261173A1 Treatment of steel mill waste metal oxides |
| 09/15/1999 | EP0646185B1 Production of metals from minerals |
| 09/10/1999 | WO1999044942A1 Thermal process for conversion of active material from spent lead acid batteries to lead monoxide |
| 08/31/1999 | US5945649 Atomic vapor laser isotope separation of lead-210 isotope |
| 08/31/1999 | US5944869 Method for the recovery of lead from exhausted lead acid storage batteries |
| 06/24/1999 | WO1999031285A1 Oxidising elutriation of contaminated sludge containing iron with separation of zinc and lead |
| 06/24/1999 | CA2312037A1 Oxidising elutriation of contaminated sludge containing iron with separation of zinc and lead |
| 06/10/1999 | DE19754209A1 Steelworks dust is treated by partially reduction, selective zinc leaching and lead compound flotation |
| 05/25/1999 | US5906671 Method for extraction of metals and non-metals from minerals, industrial by-products and waste materials |
| 05/19/1999 | EP0916742A1 Method of producing iron oxide pellets with low bentonite content |
| 04/30/1999 | CA2251339A1 Method of producing iron oxide pellets |
| 04/21/1999 | EP0909335A1 Treatment of fly ash/apc residues including lead salt recovery |
| 03/02/1999 | CA2096805C A direct-reduction process for directly reducing particulate iron-oxide-containing material |
| 02/24/1999 | CN2308606Y Sealing thermal heavy metal separator |
| 02/17/1999 | CN1208081A Antimony-eliminating method for high-antimony coarse-lead alloy |
| 02/16/1999 | US5871561 Treating dusts containing zinc and/or lead in the form of oxides to a retrievable form of their respective pure metals, using reducing agents in a heat treatment furnace |
| 02/03/1999 | CN1206748A Process for regenerating accumulator desulfurating agent |
| 01/28/1999 | DE19731280A1 Apparatus for treatment of metal melts using injection of oxygen or gases containing oxygen |
| 01/07/1999 | EP0889141A1 Zinc oxide-containing waste processing method |