| Patents for C22B 13 - Obtaining lead (1,881) |
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| 11/22/2006 | CN1865461A Method for floatation and recovery of lead zinc mixed concentrate from gold mine cyaniding slag tails |
| 11/22/2006 | CN1285742C Oxygen bottom-blowing-blast furnace reduction process for lead smelting and apparatus therefor |
| 11/22/2006 | CN1285741C Smelting method and device of molten lead oxidation slag |
| 10/26/2006 | US20060239904 Utilization of lead shavings in abrasion mills for the production of lead oxide |
| 10/17/2006 | US7122164 Having significant activity for multivalent cations; useful for removing a contaminant metal ion from a contaminated solution |
| 10/17/2006 | US7121995 Method for stabilization of lead smelter slag and matte |
| 10/11/2006 | CN1846005A Process for the high yield recovery of lead from spent lead-acid batteries with reduced associated production of slag and gaseous emissions |
| 10/05/2006 | US20060218753 Agglomerating a metal oxide, a carbonaceous material and an organic binder, drying; pellets exhibit great strength after drying |
| 09/27/2006 | CN1837385A Lead smelting method and apparatus implementing the same |
| 09/14/2006 | US20060201279 Methods of refining lead-containing materials |
| 09/06/2006 | CN1829811A Utilization of lead shavings in abrasion mills for the production of lead oxide |
| 08/02/2006 | CN1813075A Recovery of non-ferrous metals from zinc residues |
| 07/26/2006 | EP1683878A2 Method for suppressing the leachability of certain metals like tungsten and lead |
| 07/26/2006 | CN2799580Y Secondary lead processing apparatus |
| 07/12/2006 | CN1263874C Process for direct reduction of lead from high content of liquid lead dreg in bottom blowing furnace |
| 07/06/2006 | WO2006070052A1 Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 07/06/2006 | CA2591887A1 Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals |
| 06/21/2006 | EP1670960A1 Process and apparatus for recovery of non-ferrous metals from zinc residues |
| 06/07/2006 | EP1465746B1 Solder-dross mixture separation method and apparatus |
| 06/01/2006 | WO2006057812A2 Method and apparatus for decontaiminating molten metal compositions |
| 05/31/2006 | CN1780711A Solder-dross mixture separation method and apparatus |
| 05/25/2006 | US20060107794 Method and apparatus for decontaminating molten metal compositions |
| 05/24/2006 | CN1775970A Lead blowing-furnace oxygen-rich smelting process |
| 05/11/2006 | US20060096419 Method for reduction treatment of metal oxide or ironmaking waste and method for concentration and recovery zinc and/or lead |
| 05/10/2006 | EP1654392A1 Utilization of lead shavings in abrasion mills for the production of lead oxide |
| 05/02/2006 | US7037357 Dissolving; alkaline treatment in brine solutions, then acidification |
| 04/19/2006 | CN1760383A Vacuum distillation method for separating aluminium element from mixed metals in worn-out printing circuit board |
| 04/19/2006 | CN1252293C Reduction of zinc oxide from complex sulfide concentrates using chloride processing |
| 04/05/2006 | EP1641948A1 Recovery of non-ferrous metals from zinc residues |
| 04/04/2006 | US7022281 Systems and methods for removing contaminate material from a flowable material |
| 03/22/2006 | EP1463586B1 Selective flotation agent and flotation method |
| 03/15/2006 | EP1229977B1 Polyamide-containing ligands covalently bonded to supports, polyamide-containing resins, and methods for removing metals from solutions |
| 03/01/2006 | CN1243839C Method and appts. for feeding solid material and oxidizing gas into suspension smelting furnace |
| 02/22/2006 | CN1737172A Device for removing lead and recycling lead from lead-polluted soil and lead containg waste water |
| 02/08/2006 | EP1165845B1 Method and apparatus for removing undesirable metals from iron-containing materials |
| 02/08/2006 | CN1730683A High Iron zinc calcine process method |
| 02/01/2006 | CN1728445A Desulfurization process of pastel and grids of lead accumulators |
| 01/26/2006 | US20060018819 Desulfurization process of pastel and grids of lead accumulators |
| 01/25/2006 | EP1619261A1 Desulfurization process of pastel and grids of lead accumulators |
| 12/28/2005 | CN1233976C Blast furnace powder-spraying intensified smelting technology |
| 12/28/2005 | CN1233857C Decoppering refining agent in use for fire refining of non-ferrous metal with low melting point and technical procedure |
| 12/14/2005 | CN1231606C Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
| 12/14/2005 | CN1231413C Method of producing vitriol by five stage catalyst and double conversion and double absorption of lead bottom blowing furnace smoke |
| 12/14/2005 | CN1231297C Multi-condensed jet-flow spray gun |
| 11/09/2005 | CN1693497A Smelting method and device of molten lead oxidation slag |
| 10/12/2005 | CN1681949A Method for reduction treatment of metal oxide or ironmaking waste, and method for concentration and/or recovery of zinc and/or lead |
| 10/11/2005 | US6953547 Method and apparatus for feeding solid material and oxidizing gas into a suspension smelting furnace |
| 10/06/2005 | US20050220686 Remediation of heavy metals in ammunition traps and shooting ranges |
| 10/05/2005 | CN1676636A Regenerative metal electromagnetic induction smelting method |
| 10/05/2005 | CN1221675C New technology of copper convertor flue dust slag cluster smelting lead |
| 10/05/2005 | CN1221669C Method for prodn. of reduction iron |
| 09/29/2005 | US20050215841 Method for stabilization of lead smelter slag and matte |
| 09/27/2005 | US6948650 Dross removal and solder reclamation improvements |
| 09/22/2005 | WO2004105989A3 Dross removal and solder reclamation improvements |
| 09/14/2005 | CN1219084C Process for separating zinc and lead from metallurgic furnace dust |
| 09/07/2005 | CN1664132A Environmental protection method for extracting lead in waste storage battery |
| 08/18/2005 | WO2005074651A2 Remediation of heavy metals in ammunition traps and shooting ranges |
| 08/18/2005 | CA2596214A1 Remediation of heavy metals in ammunition traps and shooting ranges |
| 08/17/2005 | CN1215184C Reduction and sulfonium making smelting process with non-ferrous sulfide ore and sulfide containing material |
| 08/10/2005 | EP1561829A1 Method for reduction treatment of metal oxide or ironmaking waste, and method for concentration and/or recovery of zinc and/or lead |
| 07/28/2005 | WO2005068669A1 Method of slag fuming |
| 07/27/2005 | CN1644719A Method for fire refining lead |
| 07/14/2005 | US20050150330 Selective flotation agent and flotation method |
| 06/29/2005 | CN1208483C Method for eliminating bismuth from molten lead by adding calcium-magnesium alloys |
| 05/25/2005 | CN1203198C Method for separating lead and antimony from lead antimony crude alloy |
| 05/18/2005 | CN1202271C Techniques of exhausting fume, electrostatic dust collection, lead powder granulation in cone stove for glass bulb of color picture tube |
| 05/17/2005 | US6893606 Method and system for extracting metal from glass waste |
| 05/17/2005 | US6893605 Method and system for extracting metal from glass waste |
| 05/11/2005 | CN2699215Y Chair type lead smelting furnace with double row wind-eyes |
| 04/20/2005 | CN1607259A Pollution-free lead smelting process |
| 04/13/2005 | CN1197440C Article having a circuit soldered with parts and method for recycling wastes of the same |
| 04/07/2005 | WO2005031014A1 Process and apparatus for recovery of non-ferrous metals from zinc residues |
| 04/07/2005 | CA2539166A1 Process and apparatus for recovery of non-ferrous metals from zinc residues |
| 03/23/2005 | CN1194110C Metellurgical technology for regenerating pure lead from Pb-contained waste without pollution |
| 03/16/2005 | CN1594614A Direct reduction process for liquid high lead skim of oxygen bottom blowing furnace and special reducing furnace |
| 03/02/2005 | EP1292716B1 Method of processing zinc, cadmium and lead bearing furnace flue dust by heating in the presence of carbonaceous material |
| 02/23/2005 | CN1584075A Powder fuel spray melting method for slegs of top blowing immersion melting furnace in blast furnace |
| 02/10/2005 | WO2005012583A1 Utilization of lead shavings in abrasion mills for the production of lead oxide |
| 02/09/2005 | CN1188532C Method for reprocessing dust or dust mixtures |
| 02/02/2005 | CN1187138C Waste recovery method of circuit products with welded parts |
| 01/20/2005 | WO2005005674A1 Recovery of non-ferrous metals from zinc residues |
| 01/11/2005 | US6840980 Method for eliminating bismuth from molten lead by adding calcium-magnesium alloys |
| 12/09/2004 | WO2004105989A2 Dross removal and solder reclamation improvements |
| 11/16/2004 | CA2103991C Process for continuous electrochemical lead refining |
| 11/11/2004 | US20040221426 Mixing iron oxide with water, pelletization |
| 11/10/2004 | CN1544668A Oxygen bottom-blowing-blast furnace reduction process for lead smelting and apparatus therefor |
| 11/02/2004 | US6811759 Method of producing iron oxide pellets |
| 10/27/2004 | CN1540007A Decoppering refining agent in use for fire refining of non-ferrous metal with low melting point and technical procedure |
| 10/27/2004 | CN1540006A Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
| 10/27/2004 | CN1173052C Rear earth flux for aluminium and aluminium alloy |
| 10/27/2004 | CN1172756C Innocuous recovering process for waste dry battery |
| 10/13/2004 | EP1465746A1 Solder-dross mixture separation method and apparatus |
| 10/06/2004 | EP1463586A1 Selective flotation agent and flotation method |
| 10/05/2004 | US6800111 Concentrating the catalytic metal colloid on a filter; removing the catalytic metal of the catalytic metal colloid from the filter with an oxidizer; collecting the catalytic metal |
| 09/22/2004 | EP1251940B1 A method for treatment of flue gas cleaning products |
| 09/22/2004 | CN1530453A Treatment of slag from smelting lead and antimony |
| 09/22/2004 | CN1530451A Treatment of fragile S-Pb-Sb mineral tail |
| 09/01/2004 | CN2637437Y Comprehonsive utilization device of oxygen making plant waste nitrogen gas |
| 08/25/2004 | EP1272678B1 Method for eliminating bismuth from molten lead by adding calcium-magnesium alloys |
| 08/10/2004 | US6773485 Method for recovering catalytic metals using a porous metal filter |