EP0244433A1 - Verfahren zum trennen und rückgewinnen von metallen aus mischungen metallischer schwefelverbindungen, wie bleierzen - Google Patents
Verfahren zum trennen und rückgewinnen von metallen aus mischungen metallischer schwefelverbindungen, wie bleierzenInfo
- Publication number
- EP0244433A1 EP0244433A1 EP86905847A EP86905847A EP0244433A1 EP 0244433 A1 EP0244433 A1 EP 0244433A1 EP 86905847 A EP86905847 A EP 86905847A EP 86905847 A EP86905847 A EP 86905847A EP 0244433 A1 EP0244433 A1 EP 0244433A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lead
- solution
- silver
- metals
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 29
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 23
- 150000002739 metals Chemical class 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 39
- 238000011084 recovery Methods 0.000 title claims description 8
- 229910052976 metal sulfide Inorganic materials 0.000 title claims description 5
- 238000000926 separation method Methods 0.000 title claims description 3
- 150000004763 sulfides Chemical class 0.000 claims abstract description 33
- 239000002253 acid Substances 0.000 claims abstract description 24
- 229910052709 silver Inorganic materials 0.000 claims abstract description 21
- 239000004332 silver Substances 0.000 claims abstract description 21
- 239000000706 filtrate Substances 0.000 claims abstract description 17
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims abstract description 13
- 230000001590 oxidative effect Effects 0.000 claims abstract description 11
- 238000011282 treatment Methods 0.000 claims abstract description 10
- 239000011133 lead Substances 0.000 claims description 40
- 239000000243 solution Substances 0.000 claims description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 27
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 20
- 239000010949 copper Substances 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 16
- 229910052725 zinc Inorganic materials 0.000 claims description 15
- 239000011701 zinc Substances 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 238000001556 precipitation Methods 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 11
- 238000005868 electrolysis reaction Methods 0.000 claims description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 230000005587 bubbling Effects 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 4
- 239000011135 tin Substances 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 3
- 239000005083 Zinc sulfide Substances 0.000 claims description 3
- JKNZUZCGFROMAZ-UHFFFAOYSA-L [Ag+2].[O-]S([O-])(=O)=O Chemical class [Ag+2].[O-]S([O-])(=O)=O JKNZUZCGFROMAZ-UHFFFAOYSA-L 0.000 claims description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 239000008151 electrolyte solution Substances 0.000 claims 1
- 239000002244 precipitate Substances 0.000 abstract description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 2
- 229910021653 sulphate ion Inorganic materials 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 description 11
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 238000002386 leaching Methods 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 3
- 235000011132 calcium sulphate Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 2
- 229910003638 H2SiF6 Inorganic materials 0.000 description 2
- 239000001175 calcium sulphate Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 229910052598 goethite Inorganic materials 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 235000011007 phosphoric acid Nutrition 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- ZEFWRWWINDLIIV-UHFFFAOYSA-N tetrafluorosilane;dihydrofluoride Chemical compound F.F.F[Si](F)(F)F ZEFWRWWINDLIIV-UHFFFAOYSA-N 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 229910052981 lead sulfide Inorganic materials 0.000 description 1
- 229940056932 lead sulfide Drugs 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- WGRULTCAYDOGQK-UHFFFAOYSA-M sodium;sodium;hydroxide Chemical compound [OH-].[Na].[Na+] WGRULTCAYDOGQK-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/18—Electrolytic production, recovery or refining of metals by electrolysis of solutions of lead
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the present invention relates to a new process for treating mixtures of metal sulfides which facilitates the recovery of different metals by selective precipitation, because it previously ensures the simultaneous dissolution of the different sulfides corresponding to a single operation.
- the conditions suitable for the dissolution of all the metals to be recovered, in particular in the treatment of natural lead ores, are met in particular the oxidizing nature of the attack solution is provided by the redox couple suitably chosen from the known redox couples.
- the other metals which may be present in the initial mixture of sulphides it is in particular possible to successively extract the copper, iron and zinc from the sulphide attack filtrate, by proceeding by displacement using iron and / or metallic zinc to precipitate the copper, possibly present, then after filtration, by precipitation of the iron possibly present in the filtrate, with sodium hydroxide and air bubbling then, after filtration of the goethite formed, by precipitation with sulphide sodium or hydrogen sulphide of the zinc possibly present and filtration of the zinc sulphide formed.
- the hydrogen sulfide used there can be obtained from the residue.
- the attack solution of the mixture of sulphides contains a minimal amount, even a trace, of hydrochloric acid, and if for a sulphide concentration of 90 to 100 g / l for example, it contains from 80 to 100 g / l of fluosilicic acid and 30 to 40 g / l of nitric acid, 10 to 50 g / l of ferric iron.
- FIG. 1 The succession of the different stages of the process, completed in a particular implementation mode, is illustrated by FIG. 1.
- the leaching stage is shown diagrammatically in 1, at which level a sulfur concentrate to be treated is admitted in 2.
- the oxidizing agent, with recirculation in 4 an aqueous hydrochloric acid solution and in 5 air, optionally enriched in oxygen. Fluosilicic acid is recycled at this stage in 6.
- a precipitate is recovered by filtration. which is subjected in 8 to a step of dissolution with a hydrochloric solution of fluosilicic acid and of calcium chloride recirculated in 9.
- the precipitate formed is separated, which contains calcium sulphate, sulfur and residues d attack of sulphides, the assembly being eliminated at 11.
- the collected solution is subjected at 12 to a displacement step with lead introduced at 13 and the precipitated silver is collected at 14.
- the remaining filtrate is treated by electrolysis at 15 so as to collect the lead at 16, while the electrolysis is recycled to the dissolving step at 8.
- the filtrate separated from the sulfates at 7 is treated at 17 by displacement of the copper by means of iron and / or zinc introduced in 18, according to methods which are in themselves conventional, the precipitated copper being recovered in 19.
- the filtrate is then subjected to a precipitation step in 20 by means of a solution of soda 21, under air bubbling 22, which makes it possible to cause the precipitation of iron by techniques in themselves conventional, which is collected at 23.
- a subsequent precipitation, carried out at 24 by means of hydrogen sulfide at 25, allows the precipitation of zinc, collected at 26 in the form of zinc sulfide.
- the filtrate is reused in leaching step 1.
- the progress of the reaction is checked by taking samples after 30, 60, 90, 120 and 240 minutes.
- the etching solution contains only 0.17 g / l of copper.
- the recovery of the attack precipitate consisting mainly of lead sulphate (Pb SO 4 ) with calcium chloride in a fluosilicic acid medium gives a solution containing 25 g / l of lead, which can be treated for recovery of lead , especially by electrolysis.
- Pb SO 4 lead sulphate
- the solution contains 112.5 g / l of dissolved lead, 80 g / l of fluosilicic acid and 320 g / l of calcium chloride.
- the anode compartment contains only an aqueous solution containing 400 g / l of fluosicilic acid.
- Electrolysis is carried out at 30 ° C. at 3.29 volts and 0.27 amperes with a stainless steel cathode of
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8514325A FR2589885B1 (fr) | 1985-09-27 | 1985-09-27 | Procede de separation et de recuperation de metaux, dans des melanges de sulfures metalliques, tels que des minerais de plomb |
| FR8514325 | 1985-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0244433A1 true EP0244433A1 (de) | 1987-11-11 |
Family
ID=9323299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP86905847A Ceased EP0244433A1 (de) | 1985-09-27 | 1986-09-26 | Verfahren zum trennen und rückgewinnen von metallen aus mischungen metallischer schwefelverbindungen, wie bleierzen |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0244433A1 (de) |
| JP (1) | JPS63501023A (de) |
| AU (1) | AU586507B2 (de) |
| BR (1) | BR8606886A (de) |
| ES (1) | ES2001803A6 (de) |
| FR (1) | FR2589885B1 (de) |
| MA (1) | MA20776A1 (de) |
| PT (1) | PT83433B (de) |
| WO (1) | WO1987002068A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7902472B2 (en) | 2006-02-09 | 2011-03-08 | Siemens Aktiengesellschaft | Arrangement, in particular, for activating a transport pawl and clamping device for a spring energy store of an electric switch comprising such an arrangement |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2636939B1 (fr) * | 1988-09-06 | 1991-08-30 | Inst Nat Rech Chimique | Procede perfectionne d'obtention de composes de ta et (ou) nb exempts d'impuretes a partir de materiaux contenant ces metaux |
| IT201800003369A1 (it) * | 2018-03-08 | 2019-09-08 | Engitec Tech S P A | Procedimento per recuperare il piombo da un pastello di piombo e relativo uso in un procedimento di recupero dei componenti di accumulatori al piombo-acido. |
| WO2020110198A1 (ja) * | 2018-11-27 | 2020-06-04 | 株式会社ジェーエフシーテック | 鉛の製造方法および製造設備 |
| CN111705216B (zh) * | 2020-06-16 | 2021-12-03 | 云南锡业股份有限公司锡业分公司 | 一种焊锡电解阳极泥的处理工艺 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR320097A (fr) * | 1902-04-01 | 1902-12-01 | Betts | Perfectionnements dans et relatifs au raffinage électrolytique du plomb et des alliages de plomb |
| FR1474663A (fr) * | 1966-04-06 | 1967-03-24 | Electrolyt Zinc Australasia | Procédé d'extraction de métaux |
| US4026776A (en) * | 1970-12-02 | 1977-05-31 | Mitsui Mining & Smelting Co., Ltd. | Method for producing high purity lead |
| US3960681A (en) * | 1974-02-21 | 1976-06-01 | Mitsui Mining & Smelting Co., Ltd. | Method for producing electrolytic high purity lead using large-sized electrodes |
| NZ181123A (en) * | 1975-06-30 | 1979-12-11 | Univ Melbourne | Treatment of mineralcontaining materials with an acid in the presence of fluoride ion |
| US3972790A (en) * | 1975-09-26 | 1976-08-03 | Uop Inc. | Production of metallic lead |
| US4189461A (en) * | 1977-11-30 | 1980-02-19 | Kennecott Copper Corporation | Metal leaching from concentrates using nitrogen dioxide in acids |
| FR2446863A1 (fr) * | 1979-01-22 | 1980-08-14 | Uop Inc | Procede perfectionne de recuperation de plomb |
| FR2453906A1 (fr) * | 1979-04-12 | 1980-11-07 | Uop Inc | Procede de preparation hydrometallurgique de plomb a l'aide d'une extraction par voie electrochimique |
| US4229271A (en) * | 1979-05-24 | 1980-10-21 | Rsr Corporation | Method of recovering lead values from battery sludge |
| FR2505876A1 (en) * | 1981-05-12 | 1982-11-19 | Noual Patrick | Selective winning of lead from sulphide ores - by leaching with hot aq. hydro:fluorosilicic acid soln. contg. hydrogen peroxide and air so only lead is dissolved |
| FI850334L (fi) * | 1983-05-25 | 1985-01-25 | Oa Brand Pty Limited | Foerfarande foer extrahering av metaller ur malm. |
| US4500398A (en) * | 1984-06-20 | 1985-02-19 | The United States Of America As Represented By The Secretary Of The Interior | Production of lead from sulfides |
-
1985
- 1985-09-27 FR FR8514325A patent/FR2589885B1/fr not_active Expired
-
1986
- 1986-09-25 PT PT8343386A patent/PT83433B/pt unknown
- 1986-09-26 WO PCT/FR1986/000331 patent/WO1987002068A1/fr not_active Ceased
- 1986-09-26 ES ES8602229A patent/ES2001803A6/es not_active Expired
- 1986-09-26 AU AU64051/86A patent/AU586507B2/en not_active Expired - Fee Related
- 1986-09-26 EP EP86905847A patent/EP0244433A1/de not_active Ceased
- 1986-09-26 JP JP61505203A patent/JPS63501023A/ja active Pending
- 1986-09-26 MA MA21004A patent/MA20776A1/fr unknown
- 1986-09-26 BR BR8606886A patent/BR8606886A/pt unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8702068A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7902472B2 (en) | 2006-02-09 | 2011-03-08 | Siemens Aktiengesellschaft | Arrangement, in particular, for activating a transport pawl and clamping device for a spring energy store of an electric switch comprising such an arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| BR8606886A (pt) | 1987-11-03 |
| PT83433B (fr) | 1988-01-08 |
| FR2589885B1 (fr) | 1988-01-15 |
| AU6405186A (en) | 1987-04-24 |
| MA20776A1 (fr) | 1987-04-01 |
| FR2589885A1 (fr) | 1987-05-15 |
| AU586507B2 (en) | 1989-07-13 |
| ES2001803A6 (es) | 1988-06-16 |
| JPS63501023A (ja) | 1988-04-14 |
| PT83433A (fr) | 1986-10-01 |
| WO1987002068A1 (fr) | 1987-04-09 |
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