NO781608L - Fremgangsmaate til hydrometallurgisk behandling for fjerning av forurensninger fra en opploesning som inneholder opploeste metaller - Google Patents
Fremgangsmaate til hydrometallurgisk behandling for fjerning av forurensninger fra en opploesning som inneholder opploeste metallerInfo
- Publication number
- NO781608L NO781608L NO781608A NO781608A NO781608L NO 781608 L NO781608 L NO 781608L NO 781608 A NO781608 A NO 781608A NO 781608 A NO781608 A NO 781608A NO 781608 L NO781608 L NO 781608L
- Authority
- NO
- Norway
- Prior art keywords
- silicate
- solution
- residue
- value
- stated
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 43
- 229910052751 metal Inorganic materials 0.000 title claims description 11
- 239000002184 metal Substances 0.000 title claims description 11
- 150000002739 metals Chemical class 0.000 title claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 63
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 42
- 239000011701 zinc Substances 0.000 claims description 37
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 31
- 229910052725 zinc Inorganic materials 0.000 claims description 31
- 229910052742 iron Inorganic materials 0.000 claims description 28
- 238000001556 precipitation Methods 0.000 claims description 20
- 239000002253 acid Substances 0.000 claims description 18
- 239000000356 contaminant Substances 0.000 claims description 14
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 12
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 239000003344 environmental pollutant Substances 0.000 claims description 8
- 239000004571 lime Substances 0.000 claims description 8
- 231100000719 pollutant Toxicity 0.000 claims description 8
- 239000011686 zinc sulphate Substances 0.000 claims description 7
- 235000009529 zinc sulphate Nutrition 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 229910052915 alkaline earth metal silicate Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- -1 of calcium Chemical class 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 239000004566 building material Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical group [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 229960001763 zinc sulfate Drugs 0.000 claims description 2
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000003472 neutralizing effect Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 description 46
- 239000011777 magnesium Substances 0.000 description 13
- 238000005868 electrolysis reaction Methods 0.000 description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000706 filtrate Substances 0.000 description 7
- 229910052749 magnesium Inorganic materials 0.000 description 7
- 239000004110 Zinc silicate Substances 0.000 description 6
- 238000010908 decantation Methods 0.000 description 6
- ZOIVSVWBENBHNT-UHFFFAOYSA-N dizinc;silicate Chemical compound [Zn+2].[Zn+2].[O-][Si]([O-])([O-])[O-] ZOIVSVWBENBHNT-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 235000019352 zinc silicate Nutrition 0.000 description 6
- 150000004760 silicates Chemical class 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003929 acidic solution Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 2
- 239000000378 calcium silicate Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009854 hydrometallurgy Methods 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- YAIQCYZCSGLAAN-UHFFFAOYSA-N [Si+4].[O-2].[Al+3] Chemical compound [Si+4].[O-2].[Al+3] YAIQCYZCSGLAAN-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000003721 exogen phase Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229910052598 goethite Inorganic materials 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 229910052935 jarosite Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 229910052914 metal silicate Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
-
- 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
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C22B3/46—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Water Supply & Treatment (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Removal Of Specific Substances (AREA)
- Electrolytic Production Of Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU77307A LU77307A1 (it) | 1977-05-09 | 1977-05-09 | |
| BE187262A BE866554A (fr) | 1977-05-09 | 1978-04-28 | Procede de traitement hydrometallurgique pour l'elimination d'impuretes d'une solution contenant des metaux dissous |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO781608L true NO781608L (no) | 1978-11-10 |
Family
ID=25650735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO781608A NO781608L (no) | 1977-05-09 | 1978-05-08 | Fremgangsmaate til hydrometallurgisk behandling for fjerning av forurensninger fra en opploesning som inneholder opploeste metaller |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS5413416A (it) |
| AR (1) | AR219748A1 (it) |
| AU (1) | AU3591278A (it) |
| BE (1) | BE866554A (it) |
| BR (1) | BR7802920A (it) |
| CA (1) | CA1115024A (it) |
| DE (1) | DE2820059A1 (it) |
| ES (1) | ES469620A1 (it) |
| FI (1) | FI781443A (it) |
| FR (1) | FR2390504A1 (it) |
| GB (1) | GB1597784A (it) |
| IE (1) | IE46818B1 (it) |
| IT (1) | IT7823057A0 (it) |
| NL (1) | NL7804962A (it) |
| NO (1) | NO781608L (it) |
| PL (1) | PL206693A1 (it) |
| PT (1) | PT68014B (it) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA807812B (en) * | 1979-12-21 | 1981-12-30 | Stablex Ag | Treatment of hazardous waste |
| NL8402035A (nl) * | 1984-06-27 | 1986-01-16 | Rijksuniversiteit Utrecht P A | Neutralisatie van afvalzwavelzuur met behulp van olivijn. |
| WO2014176188A1 (en) * | 2013-04-23 | 2014-10-30 | E. I. Du Pont De Nemours And Company | Process for treating and recycling hydraulic fracturing fluid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR464038A (fr) * | 1913-09-02 | 1914-03-11 | Shunjiro Araki | Procédé de préparation d'une solution de sulfate de zinc pur à l'aide de minerais de zinc |
| GB274297A (en) * | 1926-08-23 | 1927-07-21 | Royale Hillman Stevens | Improvements in the removal of silica from zinc, copper and vanadium solutions |
-
1978
- 1978-04-28 BE BE187262A patent/BE866554A/xx unknown
- 1978-05-05 IT IT7823057A patent/IT7823057A0/it unknown
- 1978-05-05 IE IE909/78A patent/IE46818B1/en unknown
- 1978-05-08 DE DE19782820059 patent/DE2820059A1/de not_active Withdrawn
- 1978-05-08 FI FI781443A patent/FI781443A/fi not_active Application Discontinuation
- 1978-05-08 NO NO781608A patent/NO781608L/no unknown
- 1978-05-08 FR FR7813479A patent/FR2390504A1/fr not_active Withdrawn
- 1978-05-08 PT PT6801478A patent/PT68014B/pt unknown
- 1978-05-08 CA CA302,859A patent/CA1115024A/en not_active Expired
- 1978-05-09 ES ES469620A patent/ES469620A1/es not_active Expired
- 1978-05-09 AU AU35912/78A patent/AU3591278A/en active Pending
- 1978-05-09 BR BR7802920A patent/BR7802920A/pt unknown
- 1978-05-09 GB GB18576/78A patent/GB1597784A/en not_active Expired
- 1978-05-09 AR AR27209878A patent/AR219748A1/es active
- 1978-05-09 NL NL7804962A patent/NL7804962A/xx not_active Application Discontinuation
- 1978-05-09 JP JP5490878A patent/JPS5413416A/ja active Pending
- 1978-05-10 PL PL20669378A patent/PL206693A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PT68014A (fr) | 1978-06-01 |
| GB1597784A (en) | 1981-09-09 |
| PL206693A1 (pl) | 1979-02-12 |
| JPS5413416A (en) | 1979-01-31 |
| BR7802920A (pt) | 1979-01-02 |
| ES469620A1 (es) | 1979-10-01 |
| DE2820059A1 (de) | 1978-11-23 |
| IE780909L (en) | 1978-11-09 |
| BE866554A (fr) | 1978-08-14 |
| PT68014B (fr) | 1979-10-22 |
| FI781443A (fi) | 1978-11-10 |
| NL7804962A (nl) | 1978-11-13 |
| CA1115024A (en) | 1981-12-29 |
| AR219748A1 (es) | 1980-09-15 |
| AU3591278A (en) | 1979-11-15 |
| FR2390504A1 (fr) | 1978-12-08 |
| IE46818B1 (en) | 1983-10-05 |
| IT7823057A0 (it) | 1978-05-05 |
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