| Patents for C22B 13 - Obtaining lead (1,881) |
|---|
| 06/17/1980 | CA1079528A1 Continuous sulphur drossing process |
| 05/20/1980 | US4203964 Sulfurization |
| 05/01/1980 | WO1980000852A1 A method for recovering lead from a lead-chloride raw material |
| 04/29/1980 | US4200454 Process for the volatilization of zinc and/or lead from metallurgical material |
| 03/25/1980 | US4194904 From lead-antimony alloy by oxidation to mixed oxides, partial reduction to metallic lead, and fuming of antimony oxide |
| 03/04/1980 | US4191729 Hydrometallurgical process for separating lead and zinc from oxidized ore |
| 03/04/1980 | CA1072743A1 Separation of three metallurgical phases by decantation |
| 02/26/1980 | CA1072342A1 Recovery of lead |
| 02/06/1980 | EP0007890A1 A method of manufacturing and refining crude lead from arsenic-containing lead raw-materials |
| 02/06/1980 | EP0007662A1 Removal of zinc and lead from materials containing iron oxide by the rotary-kiln volatilizing process |
| 01/22/1980 | CA1070266A1 Recovery of metallic lead, lead compounds and plastic material from scrap storage batteries |
| 01/09/1980 | EP0006832A1 A method of refining crude lead |
| 01/08/1980 | CA1069318A1 Extraction of zinc and lead from their sulfides |
| 12/25/1979 | US4180251 Burner reduces lead compounds |
| 11/06/1979 | US4173623 Fluidized bed |
| 10/23/1979 | CA1064708A1 Process for separation and recovery of metal values from sulfide ore concentrates |
| 10/16/1979 | US4171216 Process for refining non-ferrous matte |
| 09/18/1979 | US4168156 Method of and electric furnace for processing nonferrous molten slags |
| 09/05/1979 | EP0003853A1 Process for continuously converting non-ferrous metal sulphide concentrates |
| 09/04/1979 | CA1061572A1 Method of selectively bringing into solution the non-ferrous metals contained in sulphurized ores and concentrates |
| 09/04/1979 | CA1061567A1 Pyrometallurgical process for lead refining |
| 08/14/1979 | US4164416 Metal recovery process |
| 08/08/1979 | EP0003464A1 Process for the utilization of lead and zinc present in the mud resulting from the secundary scrubbing of blast furnace exhaust gases |
| 07/31/1979 | US4162915 Process for treating lead-copper-sulphur charges |
| 07/03/1979 | CA1057511A1 Method for selectively dissolving non-ferrous metals contained in pyritic ores |
| 07/03/1979 | CA1057506A1 Method of producing metallic lead and silver from their sulfides |
| 06/19/1979 | CA1056855A1 5-heptyl-2-hydroxy benzaldoximes |
| 05/08/1979 | US4153451 Lead recovery and waste disposal process |
| 04/10/1979 | US4148698 Refining of ferrous and base metal sulphide ores and concentrates |
| 04/10/1979 | US4148630 Direct production of copper metal |
| 02/20/1979 | CA1048790A1 Continuous reflux refining of metals |
| 01/23/1979 | US4135993 Recovery of lead values |
| 01/23/1979 | US4135912 Produces high grade lead |
| 11/07/1978 | US4124461 Halogenation of lead ore, conversion to lead carbonate and then lead fluosilicate, electrowinning |
| 11/07/1978 | US4124457 Halogenating lead sulfide ore, water washing, leaching, electrolysis |
| 09/19/1978 | US4115109 Secondary lead smelting process |
| 08/22/1978 | US4108635 Solder skimmings recovery process |
| 08/22/1978 | CA1036830A1 Autogenous smelting of lead in a top blown rotary converter |
| 08/15/1978 | US4107265 Treating residues from the leaching of roasted zinc blende |
| 07/25/1978 | US4102676 Entraining in air stream, injecting reducing gas and oxygen |
| 07/18/1978 | US4101314 Process for recovery of lead from lead sulfide concentrates |
| 06/20/1978 | US4096045 Pbcl2, crystallization |
| 05/09/1978 | US4088310 Apparatus for suspension smelting of finely-grained oxide and/or sulfide ores and concentrates |
| 05/02/1978 | US4087340 Production of metallic lead |
| 04/25/1978 | US4085923 Furnaces |
| 04/11/1978 | US4083717 Separation of three metallurgical phases by decantation |
| 04/04/1978 | US4082629 Hydrometallurgical process for treating metal sulfides containing lead sulfide |
| 03/21/1978 | US4080197 Process for producing lead |
| 02/28/1978 | US4076523 Sintering raw materials, mixing zinc removed tailings |
| 02/28/1978 | US4076521 Method for continuously blowing materials into molten slags |
| 02/14/1978 | US4073481 Continuous sulphur drossing apparatus |
| 01/24/1978 | US4070437 Process for the recovery of metal chlorides from jarosite sludges resulting from the sulphuric acid processing of ores |
| 12/20/1977 | US4063933 Copper, silver; metal recovery |
| 11/15/1977 | US4058396 Molten alkali metal carbonate |
| 11/08/1977 | US4057422 Extraction, dehydration, sulfiding, oxidation, precipitation |
| 10/18/1977 | US4054638 Process for treating residues from the electrolytic processing of zinc, by recovery of the metals therein |
| 10/04/1977 | US4052200 Process for debismuthizing lead |
| 09/27/1977 | US4050926 Continuous sulphur drossing process |
| 09/13/1977 | US4047938 Process for refining molten metal |
| 08/23/1977 | US4043802 Purification, crystallization |
| 08/16/1977 | US4042228 Apparatus for debismuthising lead |
| 08/02/1977 | US4039323 Process for the recovery of bismuth |
| 08/02/1977 | US4039322 Method for the concentration of alkaline bismuthide in a material also containing molten lead |
| 07/05/1977 | US4033763 Process for recovery of selected metal values from waste waters |
| 07/05/1977 | US4033761 Alkali metal sulfides |
| 06/21/1977 | US4030916 High temperature reaction with carbon powder |
| 05/24/1977 | US4025335 Method for the recovery of useful metallic components |
| 04/26/1977 | US4020105 Oxime |
| 04/12/1977 | US4017308 Smelting and reduction of oxidic and sulphated lead material |
| 02/15/1977 | US4008075 Autogenous smelting of lead in a top blown rotary converter |
| 01/25/1977 | US4004921 Treatment of lead sulphide |
| 12/21/1976 | US3998628 Leaching with copper or iron chlorides, injecting chlorine |
| 09/21/1976 | US3981962 Decomposition leach of sulfide ores with chlorine and oxygen |
| 08/24/1976 | US3976472 Method and an electrically heated device for producing molten metal from powders or lumps of metal oxides |
| 07/13/1976 | US3969107 Combined process for working up pure and complex copper concentrates |
| 06/08/1976 | US3961941 Method of producing metallic lead and silver from their sulfides |
| 05/18/1976 | US3957503 Extraction of zinc and lead from their sulfides |
| 05/04/1976 | US3954450 Recovery of lead, zinc and iron sulfide |
| 03/23/1976 | US3946098 Pelletizing, heat treatment, zinc oxide, lead oxide, briquets |
| 03/02/1976 | US3941587 Metallurgical process using oxygen |
| 02/24/1976 | US3940265 Recovery of lead from battery scrap |