| Patents for C22B 13 - Obtaining lead (1,881) |
|---|
| 08/09/1983 | US4397688 Continuous process of smelting metallic lead directly from lead- and sulfur-containing materials |
| 08/09/1983 | US4397424 Crushing, classification, separation; recovery of lead oxide and lead |
| 08/02/1983 | US4396426 Manufacture of lead from sulphidic lead raw material |
| 08/02/1983 | US4396424 Utilizing heat obtained by reoxidizing the ferrous oxide |
| 08/02/1983 | CA1150953A1 Liquid-liquid extraction of metal values from aqueous solution |
| 07/05/1983 | US4391632 Process for the separation of lead from a sulfidic concentrate |
| 06/28/1983 | US4390363 Sulfiding |
| 06/15/1983 | EP0081310A2 Metal sulphide extraction |
| 06/14/1983 | US4388111 Process for the recovery of lead from a lead-bearing sulfide concentrate |
| 06/07/1983 | CA1147558A1 Method of recovering volatile metals from material containing metal oxides |
| 05/24/1983 | US4384683 Crushing, rinsing, concurrent low-temperature drying and crushing; classifying particle sizes |
| 05/18/1983 | EP0079182A1 Improvements in or relating to the production of steel |
| 05/10/1983 | US4382584 Shaft furnace and a method for the operation of the shaft furnace for the melting down of non-ferrous metals in a recycling process, particularly for the melting down of lead |
| 05/10/1983 | CA1145954A1 Process for the oxidation of molten low- iron metal matte to produce raw metal |
| 04/12/1983 | CA1144366A1 Sprinkler burner and method of introducing particulate material and a gas into a reactor |
| 03/29/1983 | US4378275 Metal sulphide extraction |
| 03/15/1983 | US4376754 Decopperizing, dilution |
| 03/15/1983 | US4376649 Separation of lead oxidation and slag reduction zones |
| 03/08/1983 | US4376043 Process of treating dust containing zinc and lead and derived in an iron or steel making process |
| 02/15/1983 | US4374098 Method of concentrating silver from anode slime |
| 02/15/1983 | CA1141175A1 Method of safely injecting oxygen reactive materials into a submerged oxygen gas stream |
| 02/15/1983 | CA1141168A1 Method of improving the performance of submerged oxygen injectors |
| 12/21/1982 | CA1137920A1 Method for the recovery of lead from material containing lead sulfide |
| 12/07/1982 | US4362607 Recovery of copper and zinc from complex chloride solutions |
| 12/01/1982 | EP0065815A1 Recovering zinc from zinc-containing sulphidic material |
| 10/26/1982 | US4356033 Process for refining metals by drossing procedures |
| 10/12/1982 | US4353738 Lead smelting method |
| 09/15/1982 | EP0059806A1 Anode slime treatment process |
| 08/31/1982 | CA1130573A1 Method and apparatus for refining molten raw metals, more particularly lead or zinc |
| 08/24/1982 | CA1130237A1 Recovery of copper and zinc from complex chloride solutions |
| 07/20/1982 | US4340421 Method of recovering lead from lead-acid batteries |
| 07/06/1982 | CA1126963A1 Process of regenerating and recovering lead from lead sulphate-containing wastes |
| 06/16/1982 | EP0053848A1 Process for injecting gases rich in oxygen into a molten non-ferrous metal bath |
| 06/09/1982 | EP0053594A1 The manufacture of lead from sulphidic lead raw material |
| 06/08/1982 | US4333763 Low temperature, non-SO2 polluting, kettle process for separation of lead from lead sulfide-containing material |
| 04/27/1982 | US4326884 Reducing using combustion gases |
| 04/27/1982 | US4326702 Sprinkler burner for introducing particulate material and a gas into a reactor |
| 04/27/1982 | CA1122419A1 Process for re-extracting metal from an organic extraction solution in which the metal is present as a metal chloride complex |
| 03/16/1982 | CA1119815A1 Pyrometallurgical smelting of lead and copper |
| 03/09/1982 | CA1119417A1 Continuous process of converting non-ferrous metal sulfide concentrates |
| 03/03/1982 | EP0046654A1 Battery reclaiming method and apparatus |
| 02/17/1982 | EP0045746A1 A method of purifying non-ferrous metal melts from foreign elements |
| 02/16/1982 | US4315774 Method of safely injecting oxygen reactive materials into a submerged oxygen gas stream |
| 02/10/1982 | EP0045532A1 Process for the continuous direct smelting of metallic lead from lead materials that contain sulfur |
| 02/10/1982 | EP0045531A1 Process for the continuous direct smelting of metallic lead from sulfidic lead concentrates |
| 02/02/1982 | US4313822 Method for recovering the lead and zinc values in secondary scrubber muds from blast furnace gases |
| 01/26/1982 | US4312724 Leaching and oxidation with ferric chloride, electrodeposition |
| 01/12/1982 | US4310351 Pretreatment |
| 12/30/1981 | EP0042702A1 Process for the recovery of lead and silver from minerals and process residues |
| 12/29/1981 | US4308058 Blasting oxygen-enriched air into metal layer while maintaining layer thickness |
| 12/23/1981 | EP0042296A1 Continuous method for removing copper from lead |
| 12/10/1981 | WO1981003500A1 Heavy metal recovery in ferrous metal production processes |
| 12/02/1981 | EP0040870A1 Process of treating a dust which contains zinc and lead and which is derived from an iron or steel making process |
| 12/01/1981 | CA1113256A1 Waelz process of volatilizing zinc and lead from iron oxide containing materials |
| 12/01/1981 | CA1113250A1 Roasting of sulphide materials |
| 11/10/1981 | CA1112052A1 Refining method for non ferrous metal mattes |
| 10/28/1981 | EP0038608A1 Apparatus for refining molten metal |
| 10/27/1981 | US4297183 Process for the treatment of solutions of lead chloride |
| 10/21/1981 | EP0038124A1 Low temperature, non-SO2 polluting, kettle process for separation of lead from lead sulfide-containing material |
| 09/29/1981 | CA1109682A1 Recovery of lead values |
| 09/22/1981 | US4290588 Apparatus for refining molten aluminum |
| 09/15/1981 | CA1108867A1 Hydrometallurgical process for the treatment of sulphidized compounds containing lead |
| 08/04/1981 | CA1106309A1 Production of metallic lead |
| 07/14/1981 | CA1104835A1 Method of and electric furnace for processing nonferrous molten slags |
| 06/30/1981 | US4276084 Leaching with cupric chloride |
| 06/23/1981 | US4274878 Lead sulfide core coated with zinc sulfide; roasted to produce briquettes |
| 06/17/1981 | EP0030345A2 Process for smelting antimonial preliminary materials of high lead content |
| 05/20/1981 | EP0028968A1 Process for treating a metal in a melting bath |
| 05/14/1981 | WO1981001297A1 A method of purifying non-ferrous metal melts from foreign elements |
| 05/13/1981 | EP0028570A1 Process for refining a molten metal by oxygen injection |
| 05/12/1981 | US4266971 Continuous process of converting non-ferrous metal sulfide concentrates |
| 04/14/1981 | US4261743 Pyrometalurgical smelting of lead and copper |
| 03/17/1981 | CA1097507A1 Process of treating residues from the leaching of roasted zinc blende |
| 03/11/1981 | EP0024987A1 Process for the treatment of lead chloride solutions |
| 03/10/1981 | US4255185 Processes and apparatus for reducing and subsequently pelletizing moist fine-grained ore |
| 03/03/1981 | CA1096636A1 Hydrometallurgical process for the selective dissolution of mixtures of oxy compounds |
| 02/10/1981 | US4250027 Scouring |
| 02/04/1981 | EP0023428A1 Liquid-liquid process for extracting metals using organo-phosphorous compounds |
| 01/07/1981 | EP0020429A1 A method for recovering lead from a lead-chloride raw material |
| 01/06/1981 | CA1092834A1 Secondary lead smelting process |
| 01/06/1981 | CA1092833A1 Method and apparatus for recovering lead from battery mud |
| 12/30/1980 | CA1092365A1 Refining of ferrous and base metal sulphide ores and concentrates |
| 12/30/1980 | CA1092360A1 Process for recovery of selected metal values from waste waters |
| 12/09/1980 | US4238222 Waelz process of volatilizing zinc and lead from iron oxide-containing materials |
| 12/02/1980 | CA1090585A1 Process for the separation of copper sulfide from metallic lead entrained in a dross |
| 11/25/1980 | CA1090145A1 Extraction recovery of certain metal values |
| 11/18/1980 | CA1089651A1 Method for the concentration of alkaline bismuthide in a material also containing molten lead |
| 11/04/1980 | US4231791 Zinc sulfide, lead sulfide, oxidation |
| 10/28/1980 | US4230487 Method of selectively bringing into solution the non-ferrous metals contained in sulphurized ores and concentrates |
| 10/21/1980 | US4229270 Process for the recovery of metal values from anode slimes |
| 09/23/1980 | CA1086255A1 Production of metallic lead |
| 09/23/1980 | CA1086073A1 Electric smelting of lead sulphate residues |
| 09/16/1980 | US4222769 Reaction with ammonium carbonate to lead carbonate and ammonium sulfate; roasting, reducing to lead |
| 09/02/1980 | CA1084719A1 Process for treating lead-copper-sulphur charges |
| 08/26/1980 | US4219353 Method of operating a lead blast furnace |
| 08/26/1980 | CA1084276A1 Decomposition leach of sulfide ores with chlorine and oxygen |
| 07/08/1980 | US4211557 Grinding and smelting chlorine-free cases and lead sulfate- and lead oxide-containing wastes |
| 07/01/1980 | CA1080486A1 Rehabilitation of zinc electrolytic metallurgy residues by recovery of contained metals |
| 06/24/1980 | CA1079979A1 Debismuthising lead |
| 06/17/1980 | US4208041 Metallurgical apparatus |