JPH0527696B2 - - Google Patents
Info
- Publication number
- JPH0527696B2 JPH0527696B2 JP62500330A JP50033086A JPH0527696B2 JP H0527696 B2 JPH0527696 B2 JP H0527696B2 JP 62500330 A JP62500330 A JP 62500330A JP 50033086 A JP50033086 A JP 50033086A JP H0527696 B2 JPH0527696 B2 JP H0527696B2
- Authority
- JP
- Japan
- Prior art keywords
- copper
- pulp
- ore
- sulfur
- sulfide
- 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.)
- Expired - Lifetime
Links
- 229910052802 copper Inorganic materials 0.000 description 66
- 239000010949 copper Substances 0.000 description 66
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 64
- 238000000034 method Methods 0.000 description 64
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 56
- 229910052717 sulfur Inorganic materials 0.000 description 36
- 239000011593 sulfur Substances 0.000 description 36
- 239000012141 concentrate Substances 0.000 description 32
- 238000011084 recovery Methods 0.000 description 27
- 238000005188 flotation Methods 0.000 description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 23
- 229910052709 silver Inorganic materials 0.000 description 23
- 239000004332 silver Substances 0.000 description 23
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 19
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 18
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 18
- 229910052938 sodium sulfate Inorganic materials 0.000 description 18
- 235000011152 sodium sulphate Nutrition 0.000 description 18
- 239000005751 Copper oxide Substances 0.000 description 17
- 229910000431 copper oxide Inorganic materials 0.000 description 17
- 238000002386 leaching Methods 0.000 description 14
- 239000002253 acid Substances 0.000 description 13
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 11
- 238000005987 sulfurization reaction Methods 0.000 description 11
- 239000011780 sodium chloride Substances 0.000 description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 7
- 239000001110 calcium chloride Substances 0.000 description 7
- 229910001628 calcium chloride Inorganic materials 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- 235000010755 mineral Nutrition 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000005486 sulfidation Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910052946 acanthite Inorganic materials 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000000306 component Substances 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 6
- 229940056910 silver sulfide Drugs 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000007790 solid phase Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 150000003568 thioethers Chemical class 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 3
- -1 dioxane alcohols Chemical class 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 239000003818 cinder Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229940100890 silver compound Drugs 0.000 description 2
- 150000003379 silver compounds Chemical class 0.000 description 2
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical compound C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- RNQWXOKSUCPOFS-UHFFFAOYSA-N 1,4-dioxan-2-ol Chemical compound OC1COCCO1 RNQWXOKSUCPOFS-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 108091005950 Azurite Proteins 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical class [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 1
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical class [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000011160 magnesium carbonates Nutrition 0.000 description 1
- 239000012533 medium component Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001575 sodium mineral Inorganic materials 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- GWBUNZLLLLDXMD-UHFFFAOYSA-H tricopper;dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Cu+2].[Cu+2].[Cu+2].[O-]C([O-])=O.[O-]C([O-])=O GWBUNZLLLLDXMD-UHFFFAOYSA-H 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/12—Sulfides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation 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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals 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
- C22B15/00—Obtaining copper
- C22B15/0002—Preliminary treatment
- C22B15/001—Preliminary treatment with modification of the copper constituent
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8610972A FR2602797B1 (fr) | 1986-07-29 | 1986-07-29 | Procede d'enrichissement de minerais de cuivre oxydes difficilement enrichissables |
| PCT/SU1986/000097 WO1988002408A1 (en) | 1986-07-29 | 1986-10-04 | Method of concentration of difficult-to-concentrate oxidized copper ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01501070A JPH01501070A (ja) | 1989-04-13 |
| JPH0527696B2 true JPH0527696B2 (es) | 1993-04-22 |
Family
ID=26225408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62500330A Granted JPH01501070A (ja) | 1986-07-29 | 1986-10-04 | 処理の困難な酸化物系銅鉱石の濃縮方法 |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPH01501070A (es) |
| CN (1) | CN1011294B (es) |
| AU (1) | AU604006B2 (es) |
| BR (1) | BR8607219A (es) |
| DE (1) | DE3690783T1 (es) |
| FR (1) | FR2602797B1 (es) |
| GB (1) | GB2204507B (es) |
| WO (1) | WO1988002408A1 (es) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964411B (zh) * | 2016-06-22 | 2018-03-13 | 东北大学 | 一种多极性基非硫化矿浮选组合捕收剂及制备和使用方法 |
| CN106733207B (zh) * | 2017-03-22 | 2019-07-19 | 凉山矿业股份有限公司 | 一种应用于铜钼硫化矿分离浮选中的浮选调整剂及其应用方法 |
| CN108722678A (zh) * | 2017-04-14 | 2018-11-02 | 武汉科技大学 | 一种氧化铜矿的浮选方法 |
| CN111632749A (zh) * | 2020-04-28 | 2020-09-08 | 西北矿冶研究院 | 一种从氧化铜酸浸渣中回收氧化铜的选矿方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5038511A (es) * | 1973-10-01 | 1975-04-10 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2367022A (en) * | 1945-01-09 | norton | ||
| SU59343A1 (ru) * | 1939-10-09 | 1941-03-31 | И.Н. Шоршер | Способ подготовки олов нных руд и первичных концентратов к флотации |
| US2332145A (en) * | 1942-05-23 | 1943-10-19 | Harshaw Chem Corp | Manufacture of copper sulphide |
| SU108670A1 (ru) * | 1956-09-04 | С.И. Соболь | Метод сульфидировани никел и кобальта в окисленных рудах | |
| US2989394A (en) * | 1958-12-19 | 1961-06-20 | Newmont Exploration Ltd | Heat treatment and concentration of oxide ores |
| SU333208A1 (ru) * | 1969-12-22 | 1972-03-21 | Государственный научно исследовательский институт цветных металлов | Способ переработки окисленных и смешанныхмедных руд |
| US3728430A (en) * | 1970-12-14 | 1973-04-17 | Anlin Co | Method for processing copper values |
| GB1598454A (en) * | 1977-03-15 | 1981-09-23 | Sherritt Gordon Mines Ltd | Leaching of metal sulphides |
| SU709707A1 (ru) * | 1978-06-12 | 1980-01-15 | Норильский Ордена Ленина И Ордена Трудового Красного Знамени Горно- Металлургический Комбинат Им. А.П. Завенягина | Способ переработки пульпы |
| LU85385A1 (fr) * | 1984-05-28 | 1986-01-29 | Mines Fond Zinc Vieille | Procede de lixiviation de sulfures contenant du zinc et du fer |
-
1986
- 1986-07-29 FR FR8610972A patent/FR2602797B1/fr not_active Expired
- 1986-10-04 WO PCT/SU1986/000097 patent/WO1988002408A1/ru active Application Filing
- 1986-10-04 BR BR8607219A patent/BR8607219A/pt unknown
- 1986-10-04 GB GB8812447A patent/GB2204507B/en not_active Expired - Fee Related
- 1986-10-04 DE DE19863690783 patent/DE3690783T1/de active Pending
- 1986-10-04 AU AU67766/87A patent/AU604006B2/en not_active Ceased
- 1986-10-04 JP JP62500330A patent/JPH01501070A/ja active Granted
-
1987
- 1987-04-01 CN CN87102448.9A patent/CN1011294B/zh not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5038511A (es) * | 1973-10-01 | 1975-04-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01501070A (ja) | 1989-04-13 |
| WO1988002408A1 (en) | 1988-04-07 |
| AU6776687A (en) | 1988-04-21 |
| FR2602797B1 (fr) | 1988-11-25 |
| CN87102448A (zh) | 1988-10-12 |
| GB2204507B (en) | 1990-06-27 |
| GB8812447D0 (en) | 1988-07-20 |
| GB2204507A (en) | 1988-11-16 |
| BR8607219A (pt) | 1988-11-01 |
| CN1011294B (zh) | 1991-01-23 |
| AU604006B2 (en) | 1990-12-06 |
| FR2602797A1 (fr) | 1988-02-19 |
| DE3690783T1 (es) | 1989-01-19 |
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