| Patents for C22B 13 - Obtaining lead (1,881) |
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| 08/05/2004 | WO2004034427B1 Semiconductor packages, lead-containing solders and anodes and methods of removing alpha-emitters from materials |
| 07/27/2004 | CA2162270C Process for removing, separating and concentrating metals |
| 07/21/2004 | CN1514137A Lead smelting lead pumping device and its technology |
| 07/14/2004 | CN2625392Y Oxygen side-blowing direct lead-smelting furnace |
| 06/24/2004 | US20040118248 Dissolving; alkaline treatment in brine solutions, then acidification |
| 06/17/2004 | WO2004034427A3 Semiconductor packages, lead-containing solders and anodes and methods of removing alpha-emitters from materials |
| 06/10/2004 | US20040108633 Method and system for extracting metal from glass waste |
| 06/10/2004 | US20040108632 Method and system for extracting metal from glass waste |
| 05/05/2004 | CN2614339Y Protector for nitrogen supply of oxygen lance of bottom blowing furnace |
| 05/05/2004 | CN2614338Y Stick resistant protector for water jacket of charging opening of bottom blowing furnace |
| 05/05/2004 | CN2614337Y Voltage stabilizer for demineralized water flowing through oxygen lance of bottom blowing furnace |
| 05/05/2004 | CN2614336Y A casting mould structure for improving performance of high lead skim block |
| 05/05/2004 | CN2614335Y Direct ingot apparatus for high lead skim ingot process of oxygen bottom blowing furnace |
| 05/05/2004 | CN1493707A New technology of copper convertor flue dust slag cluster smelting lead and its cluster formale |
| 04/22/2004 | WO2004034427A2 Semiconductor packages, lead-containing solders and anodes and methods of removing alpha-emitters from materials |
| 04/08/2004 | US20040065954 Semiconductor packages; lead-containing solders and anodes; and methods of removing alpha-emitters from materials |
| 03/25/2004 | WO2004024961A1 Method for reduction treatment of metal oxide or ironmaking waste, and method for concentration and/or recovery of zinc and/or lead |
| 03/24/2004 | CN1143002C Method for extracting anions of IVB to VIII metals using alkyl-substituted 1,3-diaminopropanes |
| 03/23/2004 | US6709641 Using dialkyl-substituted 1,3-diaminopropanes; high loading capacity |
| 03/18/2004 | US20040053185 Method and apparatus for feeding solid material and oxidizing gas into a suspension smelting furnace |
| 03/18/2004 | US20040050210 Charging the dusts into a bath of molten metals and liquid oxidic slags, volatile heavy metal compounds such as zinc and/or lead oxides are separated from gas phase and alkalies are introduced into the slags |
| 03/17/2004 | CN1482057A Method of five stage catalyst and double conversion and double absorption to treat smoke of lead bottom blowing furnace for preparing vitriol |
| 03/10/2004 | CN1481447A Method and appts. for feeding solid material and oxidizing gas into suspension smelting furnace |
| 03/03/2004 | EP1119646B1 Liquid carton waste material recycling process and apparatus |
| 02/12/2004 | WO2002070756A3 Recovery of metals from jarosite-containing materials |
| 02/04/2004 | CN1472349A Process for direct reduction of lead from high content of liquid lead dreg in bottom blowing furnace |
| 01/22/2004 | US20040011851 Dross removal and solder reclamation improvements |
| 01/08/2004 | US20040003681 Method for recovering catalytic metals using a porous metal filter |
| 01/07/2004 | CN2597487Y Device for producing stibium trioxide from lead-antimony alloy |
| 12/30/2003 | US6669757 Method for extracting metal from glass waste |
| 12/23/2003 | US6666904 Method and system for extracting metal from glass waste |
| 12/23/2003 | US6666370 Solder-dross mixture separation method and apparatus |
| 10/23/2003 | US20030198779 Method of producing iron oxide pellets |
| 10/08/2003 | CN1446930A Techniques of exhausting fume, electrostatic dust collection, lead powder granulation in cone stove for glass bulb of color picture tube |
| 10/01/2003 | CN1445381A Method for recovering catalytic metal using porous metal filter |
| 09/24/2003 | EP1346072A1 Method and apparatus for feeding solid material and oxidizing gas into suspension smelting furnace |
| 09/17/2003 | EP1229977A4 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 09/12/2003 | WO2003074743A2 Process for bismuth recovery from lead-bismuth dross |
| 08/27/2003 | CN2568671Y Lead smelter hearth |
| 08/20/2003 | EP1252346B1 Method for reprocessing dust or dust mixtures |
| 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 |
| 07/31/2003 | WO2003061893A1 Solder-dross mixture separation method and apparatus |
| 07/24/2003 | US20030136816 Solder-dross mixture separation method and apparatus |
| 07/03/2003 | US20030121367 Reduction |
| 07/02/2003 | EP1119645B1 Process and apparatus for recovering metal material from waste material |
| 06/25/2003 | CN1426486A Method for eliminating bismuth from molten lead by adding calcium-magnesium alloys |
| 06/19/2003 | WO2003049867A1 Selective flotation agent and flotation method |
| 06/19/2003 | CA2469359A1 Selective flotation agent and flotation method |
| 06/17/2003 | US6579505 Method of producing iron oxide pellets |
| 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 |
| 05/28/2003 | EP1314788A2 A method for recovering catalytic metals using a porous metal filter |
| 05/28/2003 | CN2552941Y High efficient separating device for extracting main valuable metal from jamesonite |
| 05/28/2003 | CN1420186A Process for separating zinc and lead from metallurgic furnace dust |
| 05/21/2003 | CN2551655Y Device for producing stibium trioxide using jamesonite |
| 05/14/2003 | CN1108388C Smelting method of regenerated lead |
| 04/10/2003 | WO2003028926A1 Highly active lead dusts and method for treatment thereof |
| 04/09/2003 | EP1151646B1 Article having a circuit soldered with parts and method for recycling wastes of the same |
| 04/02/2003 | EP1297920A1 Surface active lead dust and method for its treatment |
| 03/27/2003 | WO2003025235A1 Process for the recovery of lead from scrap batteries |
| 03/26/2003 | EP1144699B1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 03/26/2003 | CN1405341A Method for separating lead and antimony from lead antimony crude alloy |
| 03/26/2003 | CN1405340A Molten metal distillation apparatus |
| 03/19/2003 | EP1292716A2 Method of processing zinc, cadmium and lead bearing furnace flue dust by heating in the presence of carbonaceous material |
| 03/18/2003 | US6533990 Apparatus for distilling molten baths |
| 03/13/2003 | WO2003020989A1 High temperature metal recovery process |
| 03/13/2003 | US20030047035 High temperature metal recovery process |
| 03/05/2003 | CN1401010A Method for reprocessing dust or dust mixtures |
| 02/12/2003 | EP1283273A2 Apparatus for distilling molten metal |
| 02/11/2003 | US6517789 Method for reclaiming constituents from an industrial waste stream |
| 02/06/2003 | US20030025253 Apparatus for distilling molten baths |
| 02/05/2003 | CN1395079A Blast furnace powder-spraying intensified smelting technology |
| 01/08/2003 | EP1272678A1 Method for eliminating bismuth from molten lead by adding calcium-magnesium alloys |
| 01/08/2003 | CN1389584A Efficient separation process and apparatus of main valuable metals in jamesonite |
| 12/17/2002 | US6494933 Method of utilizing secondary raw materials containing iron, zinc and lead |
| 12/12/2002 | DE10134286C1 Device for distilling molten metal comprises a pot-like lower housing part for receiving a melt crucible and an upper housing part connected to the lower housing part |
| 11/28/2002 | US20020175441 Adding water to a raw material mixture comprising iron oxide and blast furnace dust for reduction in open-hearth furnace |
| 11/14/2002 | US20020168309 Method for recovering catalytic metals |
| 10/30/2002 | EP1252346A1 Method for reprocessing dust or dust mixtures |
| 10/30/2002 | EP1251940A2 A method for treatment of flue gas cleaning products |
| 10/30/2002 | CN1376803A Recovery method for catalytic metal |
| 10/15/2002 | US6464753 Furnace flue dust processing method |
| 09/17/2002 | US6451085 Agglomeration of powder mixture |
| 09/12/2002 | WO2002070756A2 Recovery of metals from jarosite-containing materials |
| 08/14/2002 | EP1229977A1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 08/14/2002 | CN1363427A Circuit products with welded parts and method for recovery of them for reuse |
| 07/24/2002 | EP1224972A1 A method for recovering catalytic metals from a colloidal solution |
| 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 |
| 07/18/2002 | WO2002055746A1 Method and apparatus for feeding solid material and oxidizing gas into suspension smelting furnace |
| 06/27/2002 | WO2001098547A3 Method of processing zinc, cadmium and lead bearing furnace flue dust by heating in the presence of carbonaceous material |
| 06/26/2002 | CN1355324A Metallurgical technology for regenerating pure lead from Pb-contained waste without pollution |
| 06/25/2002 | US6409798 Process for recovering metal material from waste material |
| 06/12/2002 | CN1353202A Process for treating metal sulfide ore |
| 06/11/2002 | US6401635 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 04/03/2002 | EP1192288A1 Method for treating metal-containing waste by pyrometallurgy |
| 03/19/2002 | CA2177766C Method and apparatus of treating dusts containing oxides |
| 03/14/2002 | WO2002020858A1 Method for recuperating metal elements from zinc-bearing raw materials using molten lead |
| 02/27/2002 | EP1042518B1 Oxidising elutriation of contaminated sludge containing iron with separation of zinc and lead |
| 02/20/2002 | CN1337144A Article having a circuit soldered with parts and method for recycling wastes of the same |
| 02/12/2002 | CA2032759C Method of reprocessing zinc- and lead-containing residues from metallurgical plants |
| 02/06/2002 | CN1334349A Blast furnace smelting technology for lead-enriched slags |