PL110332B1 - Method of recovering germanium contained in zinc ores - Google Patents
Method of recovering germanium contained in zinc ores Download PDFInfo
- Publication number
- PL110332B1 PL110332B1 PL1976191018A PL19101876A PL110332B1 PL 110332 B1 PL110332 B1 PL 110332B1 PL 1976191018 A PL1976191018 A PL 1976191018A PL 19101876 A PL19101876 A PL 19101876A PL 110332 B1 PL110332 B1 PL 110332B1
- Authority
- PL
- Poland
- Prior art keywords
- germanium
- distillation
- zinc
- solution
- carried out
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 96
- 239000011701 zinc Substances 0.000 title claims description 63
- 229910052725 zinc Inorganic materials 0.000 title claims description 60
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 title claims description 57
- 229910052732 germanium Inorganic materials 0.000 title claims description 56
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 55
- 239000000243 solution Substances 0.000 claims description 56
- 238000004821 distillation Methods 0.000 claims description 55
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 46
- IEXRMSFAVATTJX-UHFFFAOYSA-N tetrachlorogermane Chemical compound Cl[Ge](Cl)(Cl)Cl IEXRMSFAVATTJX-UHFFFAOYSA-N 0.000 claims description 45
- 230000008569 process Effects 0.000 claims description 39
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 35
- 239000001110 calcium chloride Substances 0.000 claims description 34
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 34
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 27
- 239000000460 chlorine Substances 0.000 claims description 27
- 229910052801 chlorine Inorganic materials 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 22
- 239000012267 brine Substances 0.000 claims description 20
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 20
- 239000002253 acid Substances 0.000 claims description 18
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 claims description 14
- 239000012224 working solution Substances 0.000 claims description 12
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 238000000638 solvent extraction Methods 0.000 claims description 6
- 238000000622 liquid--liquid extraction Methods 0.000 claims description 5
- 238000005292 vacuum distillation Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 4
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 239000002635 aromatic organic solvent Substances 0.000 claims description 2
- 235000011148 calcium chloride Nutrition 0.000 description 31
- 238000000605 extraction Methods 0.000 description 24
- 235000019647 acidic taste Nutrition 0.000 description 21
- 239000012074 organic phase Substances 0.000 description 20
- 238000005325 percolation Methods 0.000 description 18
- 239000012071 phase Substances 0.000 description 18
- 239000000203 mixture Substances 0.000 description 15
- 239000008346 aqueous phase Substances 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 238000011084 recovery Methods 0.000 description 12
- 239000002904 solvent Substances 0.000 description 11
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 description 6
- 229910052785 arsenic Inorganic materials 0.000 description 6
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 241000208152 Geranium Species 0.000 description 5
- 150000001805 chlorine compounds Chemical class 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 5
- 229910001629 magnesium chloride Inorganic materials 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 229910006113 GeCl4 Inorganic materials 0.000 description 4
- OEYOHULQRFXULB-UHFFFAOYSA-N arsenic trichloride Chemical compound Cl[As](Cl)Cl OEYOHULQRFXULB-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000004508 fractional distillation Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- -1 rare earth chloride Chemical class 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- 229910017009 AsCl3 Inorganic materials 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000002269 analeptic agent 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
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 1
- 150000001495 arsenic compounds Chemical class 0.000 description 1
- 229910000070 arsenic hydride Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002291 germanium compounds Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229940093920 gynecological arsenic compound Drugs 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 231100000925 very toxic Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G17/00—Compounds of germanium
- C01G17/04—Halides of germanium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G17/00—Compounds of germanium
- C01G17/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G17/00—Compounds of germanium
- C01G17/02—Germanium dioxide
-
- 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)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7521327A FR2317366A1 (fr) | 1975-07-08 | 1975-07-08 | Procede pour la recuperation et la purification de germanium a partir de minerais de zinc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL110332B1 true PL110332B1 (en) | 1980-07-31 |
Family
ID=9157637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL1976191018A PL110332B1 (en) | 1975-07-08 | 1976-07-08 | Method of recovering germanium contained in zinc ores |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4090871A (en:Method) |
| JP (1) | JPS6034498B2 (en:Method) |
| AU (1) | AU497928B2 (en:Method) |
| BE (1) | BE843453A (en:Method) |
| CA (1) | CA1083358A (en:Method) |
| DE (1) | DE2630742C3 (en:Method) |
| FR (1) | FR2317366A1 (en:Method) |
| GB (1) | GB1526115A (en:Method) |
| IT (1) | IT1069436B (en:Method) |
| PL (1) | PL110332B1 (en:Method) |
| YU (1) | YU39214B (en:Method) |
| ZM (1) | ZM9176A1 (en:Method) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4389379A (en) * | 1980-08-15 | 1983-06-21 | Societe Miniere Et Metallurgique De Penarroya | Process for selective liquid-liquid extraction of germanium |
| DE3635450A1 (de) * | 1986-10-18 | 1988-04-21 | Metallgesellschaft Ag | Verfahren zur selektiven gewinnung von germanium und/oder arsen aus waessrigen loesungen |
| FR2623522B1 (fr) * | 1987-11-24 | 1990-04-20 | Metaleurop Sa | Procede de traitement hydrometallurgique d'une solution de chlorure d'indium |
| US6337057B1 (en) * | 1999-06-23 | 2002-01-08 | Lucent Technologies, Inc. | Process for the direct production of germanium tetrachloride from hydrated germanate-containing solids using gaseous hydrogen chloride |
| US6238462B1 (en) * | 1999-07-14 | 2001-05-29 | Corning Incorporated | Methods for the separation of compounds from acidic aqueous solutions |
| KR20030005722A (ko) * | 2001-07-10 | 2003-01-23 | (주)나인디지트 | 건식 금속 게르마늄 제조방법과 그 정제장치 |
| RU2270715C1 (ru) * | 2004-06-11 | 2006-02-27 | Российский научный центр "Курчатовский институт" | Способ получения германия для полупроводниковых материалов |
| JP4899167B2 (ja) * | 2004-09-29 | 2012-03-21 | ユミコア | 液体金属を用いたＧｅＣｌ４の還元によるＧｅの製造方法 |
| WO2008151432A2 (en) * | 2007-06-15 | 2008-12-18 | The Governors Of The University Of Alberta | Method for preparing nanocrystalline germanium in ge02 and freestanding germanium nanoparticles |
| US20100183500A1 (en) * | 2009-01-17 | 2010-07-22 | Henry Lee | Germane gas production from germanium byproducts or impure germanium compounds |
| JP5676206B2 (ja) * | 2010-10-27 | 2015-02-25 | Ｄｏｗａメタルマイン株式会社 | 四塩化ゲルマニウムの回収方法 |
| JP6141651B2 (ja) * | 2013-02-21 | 2017-06-07 | Ｄｏｗａメタルマイン株式会社 | ゲルマニウム酸化物の製造方法 |
| CN104911363A (zh) * | 2015-06-24 | 2015-09-16 | 上海交通大学 | 一种回收褐煤烟尘中锗的方法 |
| PL3401283T3 (pl) | 2017-05-10 | 2020-05-18 | ITM Isotopen Technologien München AG | Sposób wytwarzania wysoce oczyszczonego materiału 68ge do celów radiofarmaceutycznych |
| CN107723467A (zh) * | 2017-09-20 | 2018-02-23 | 郴州丰越环保科技有限公司 | 一种高效回收锗的方法 |
| JP7281288B2 (ja) * | 2019-01-30 | 2023-05-25 | Ｄｏｗａメタルマイン株式会社 | ゲルマニウム酸化物粉末およびその製造方法 |
| CN110938752A (zh) * | 2019-11-07 | 2020-03-31 | 深圳市中金岭南有色金属股份有限公司丹霞冶炼厂 | 一种提高锗回收率的萃取工艺 |
| CN114277264B (zh) * | 2021-12-28 | 2023-10-24 | 广东先导稀材股份有限公司 | 一种萃取回收锗的方法 |
| CN115477322A (zh) * | 2022-09-29 | 2022-12-16 | 云南驰宏国际锗业有限公司 | 一种超高纯GeCl4制备方法 |
| CN116623018B (zh) * | 2023-06-27 | 2024-09-20 | 昆明冶金研究院有限公司 | 一种酸烧提取锗的方法 |
| CN116640928B (zh) * | 2023-07-27 | 2023-10-20 | 昆明理工大学 | 一种氯化蒸馏锗残渣与铅锌冶炼酸性废水协同处置的方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1905460A (en) * | 1930-06-17 | 1933-04-25 | Gamichon Paul | Process for converting into soluble salts lead and other metals contained in lead bearing ores |
| ES207331A1 (es) * | 1952-01-21 | 1953-03-01 | Sogo Kenkyujo Zh Sekitan | Un método de recuperar germanio desde carbones |
| US2767052A (en) * | 1952-06-26 | 1956-10-16 | Eagle Picher Co | Recovery of germanium from scrap materials |
| GB785751A (en) * | 1952-08-15 | 1957-11-06 | Nat Res Dev | Improvements in and relating to the purification of germanium |
| US2920951A (en) * | 1955-06-23 | 1960-01-12 | Knapsack Ag | Process for the continuous production of easily vaporizable metals |
| US2835569A (en) * | 1956-04-19 | 1958-05-20 | Electro Chimie Metal | Process of extracting gold and other metals from ores, concentrates, residues and the like containing principally cobalt, nickel, iron, arsenic and gold |
| FR1324877A (fr) * | 1962-06-14 | 1963-04-19 | American Metal Climax Inc | Procédé de purification de tétra chlorure de germanium, installation pour la réalisation du procédé, et produit conforme à ceux obtenus par le présent procédé ou procédé similaire |
| US3981962A (en) * | 1975-06-30 | 1976-09-21 | The United States Of America As Represented By The Secretary Of The Interior | Decomposition leach of sulfide ores with chlorine and oxygen |
-
1975
- 1975-07-08 FR FR7521327A patent/FR2317366A1/fr active Granted
-
1976
- 1976-06-25 BE BE168355A patent/BE843453A/xx not_active IP Right Cessation
- 1976-07-01 AU AU15476/76A patent/AU497928B2/en not_active Expired
- 1976-07-05 CA CA256,227A patent/CA1083358A/en not_active Expired
- 1976-07-05 YU YU01643/76A patent/YU39214B/xx unknown
- 1976-07-06 IT IT12704/76A patent/IT1069436B/it active
- 1976-07-07 ZM ZM91/76A patent/ZM9176A1/xx unknown
- 1976-07-07 JP JP51081437A patent/JPS6034498B2/ja not_active Expired
- 1976-07-08 US US05/703,707 patent/US4090871A/en not_active Expired - Lifetime
- 1976-07-08 PL PL1976191018A patent/PL110332B1/pl unknown
- 1976-07-08 DE DE2630742A patent/DE2630742C3/de not_active Expired
- 1976-07-08 GB GB28532/76A patent/GB1526115A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4090871A (en) | 1978-05-23 |
| JPS529000A (en) | 1977-01-24 |
| DE2630742A1 (de) | 1977-01-20 |
| BE843453A (fr) | 1976-12-27 |
| IT1069436B (it) | 1985-03-25 |
| FR2317366B1 (en:Method) | 1977-12-16 |
| YU164376A (en) | 1982-05-31 |
| ZM9176A1 (en) | 1977-10-21 |
| AU1547676A (en) | 1978-01-05 |
| YU39214B (en) | 1984-08-31 |
| JPS6034498B2 (ja) | 1985-08-09 |
| DE2630742C3 (de) | 1978-03-23 |
| DE2630742B2 (de) | 1977-07-28 |
| AU497928B2 (en) | 1979-01-25 |
| FR2317366A1 (fr) | 1977-02-04 |
| GB1526115A (en) | 1978-09-27 |
| CA1083358A (en) | 1980-08-12 |
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