DE2615767C2 - Vakuumdrehrohrofen - Google Patents
VakuumdrehrohrofenInfo
- Publication number
- DE2615767C2 DE2615767C2 DE19762615767 DE2615767A DE2615767C2 DE 2615767 C2 DE2615767 C2 DE 2615767C2 DE 19762615767 DE19762615767 DE 19762615767 DE 2615767 A DE2615767 A DE 2615767A DE 2615767 C2 DE2615767 C2 DE 2615767C2
- Authority
- DE
- Germany
- Prior art keywords
- reaction
- rotary
- rotary tube
- housing
- tube
- 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
Links
- 238000006243 chemical reaction Methods 0.000 claims description 67
- 238000001704 evaporation Methods 0.000 claims description 17
- 230000008020 evaporation Effects 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 238000011049 filling Methods 0.000 claims description 8
- 238000011068 loading method Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 19
- 239000011575 calcium Substances 0.000 description 19
- 229910052791 calcium Inorganic materials 0.000 description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 239000012071 phase Substances 0.000 description 11
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 235000013495 cobalt Nutrition 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 229910000531 Co alloy Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013021 overheating Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 235000018734 Sambucus australis Nutrition 0.000 description 2
- 244000180577 Sambucus australis Species 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910003321 CoFe Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 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
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910000756 V alloy Inorganic materials 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- IXQWNVPHFNLUGD-UHFFFAOYSA-N iron titanium Chemical compound [Ti].[Fe] IXQWNVPHFNLUGD-UHFFFAOYSA-N 0.000 description 1
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- RZWWGOCLMSGROE-UHFFFAOYSA-N n-(2,6-dichlorophenyl)-5,7-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-sulfonamide Chemical compound N1=C2N=C(C)C=C(C)N2N=C1S(=O)(=O)NC1=C(Cl)C=CC=C1Cl RZWWGOCLMSGROE-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- -1 titanium-aluminum-vanadium Chemical compound 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/06—Rotary-drum furnaces, i.e. horizontal or slightly inclined adapted for treating the charge in vacuum or special atmosphere
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S266/00—Metallurgical apparatus
- Y10S266/905—Refractory metal-extracting means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762615767 DE2615767C2 (de) | 1976-04-10 | 1976-04-10 | Vakuumdrehrohrofen |
| CS771619A CS214741B2 (en) | 1976-04-10 | 1977-03-10 | Vacuum cylindrical rotary furnace |
| IT48593/77A IT1086873B (it) | 1976-04-10 | 1977-03-22 | Frono tubolare rotativo sotto vuoto |
| CH355977A CH600274A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-04-10 | 1977-03-22 | |
| US05/781,106 US4071229A (en) | 1976-04-10 | 1977-03-25 | Vacuum revolving cylindrical furnace |
| GB13005/77A GB1532185A (en) | 1976-04-10 | 1977-03-28 | Rotary tubular vacuum furnace |
| HU77GO1366A HU173206B (hu) | 1976-04-10 | 1977-03-28 | Vrahhajuhhajasja vakumnaja pech' |
| CA275,258A CA1069691A (en) | 1976-04-10 | 1977-03-31 | Vacuum revolving cylindrical furnace |
| DD7700198260A DD129986A5 (de) | 1976-04-10 | 1977-04-05 | Vakuumdrehrohrofen |
| NLAANVRAGE7703922,A NL170664C (nl) | 1976-04-10 | 1977-04-07 | Roterende vacuuem-buisoven voor het uitvoeren van reakties. |
| SU772467952A SU652911A3 (ru) | 1976-04-10 | 1977-04-08 | Вращающа с трубчата печь |
| FR7710717A FR2347636A1 (fr) | 1976-04-10 | 1977-04-08 | Four tubulaire tournant sous vide |
| BE176574A BE853428A (fr) | 1976-04-10 | 1977-04-08 | Four tubulaire rotatif a vide |
| JP4128677A JPS52123906A (en) | 1976-04-10 | 1977-04-11 | Vacuum rotary furnace for intermetallic thermal reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762615767 DE2615767C2 (de) | 1976-04-10 | 1976-04-10 | Vakuumdrehrohrofen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2615767B1 DE2615767B1 (de) | 1977-07-07 |
| DE2615767C2 true DE2615767C2 (de) | 1978-02-16 |
Family
ID=5975047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762615767 Expired DE2615767C2 (de) | 1976-04-10 | 1976-04-10 | Vakuumdrehrohrofen |
Country Status (14)
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810454B2 (ja) * | 1980-02-07 | 1983-02-25 | 住友特殊金属株式会社 | 永久磁石合金 |
| JPS5869274U (ja) * | 1981-10-31 | 1983-05-11 | 株式会社東興化学研究所 | 隔膜式酸素電極 |
| GB2129529B (en) * | 1982-11-04 | 1987-02-25 | Dr Zahra Ibrahim Khatib | Rotary reaction vessel |
| JPS60176167U (ja) * | 1984-04-28 | 1985-11-21 | 日本電池株式会社 | 定置式酸素センサ− |
| JPS60260841A (ja) * | 1984-06-07 | 1985-12-24 | Japan Storage Battery Co Ltd | ガルバニ電池式酸素センサ− |
| JPS60260840A (ja) * | 1984-06-07 | 1985-12-24 | Japan Storage Battery Co Ltd | ガルバニ電池式酸素センサ− |
| WO1990000084A1 (en) * | 1988-06-28 | 1990-01-11 | Masao Kubota | Material generation method and apparatus utilizing non-gravitational effect |
| JP3347963B2 (ja) * | 1996-12-11 | 2002-11-20 | 株式会社松本機械製作所 | 真空回転乾燥機 |
| JP4679746B2 (ja) * | 2001-03-23 | 2011-04-27 | 高砂工業株式会社 | バッチ式ロータリーキルン |
| DE102004053435A1 (de) * | 2004-11-05 | 2006-05-11 | Forschungszentrum Jülich GmbH | Thermische Isolierung zur Reduzierung von Wärmeverlusten und Energieverbrauch bei Hochtemperaturanlagen |
| JP2006308172A (ja) * | 2005-04-27 | 2006-11-09 | Takasago Ind Co Ltd | バッチ式ロータリキルン |
| JP2009236400A (ja) * | 2008-03-27 | 2009-10-15 | Mitsubishi Materials Corp | 真空加熱炉および粉末材料の加熱処理方法 |
| US8485815B2 (en) * | 2008-05-13 | 2013-07-16 | Harper International Corporation | Overhung rotary tube furnace |
| CN104070174B (zh) * | 2014-06-25 | 2016-01-06 | 四川大学 | 真空热蒸发旋转混料式钨-钾合金粉末制备装置 |
| CN105081335B (zh) * | 2015-09-18 | 2017-04-26 | 苏州萨伯工业设计有限公司 | 一种稀土磁性材料生产节能氢碎装置 |
| CN117109302B (zh) * | 2023-07-06 | 2025-08-22 | 新干县鑫吉新资源有限公司 | 一种稀土氧化物灼烧设备 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2915384A (en) * | 1956-10-02 | 1959-12-01 | Nat Res Corp | Method of producing zirconium |
-
1976
- 1976-04-10 DE DE19762615767 patent/DE2615767C2/de not_active Expired
-
1977
- 1977-03-10 CS CS771619A patent/CS214741B2/cs unknown
- 1977-03-22 CH CH355977A patent/CH600274A5/xx not_active IP Right Cessation
- 1977-03-22 IT IT48593/77A patent/IT1086873B/it active
- 1977-03-25 US US05/781,106 patent/US4071229A/en not_active Expired - Lifetime
- 1977-03-28 HU HU77GO1366A patent/HU173206B/hu unknown
- 1977-03-28 GB GB13005/77A patent/GB1532185A/en not_active Expired
- 1977-03-31 CA CA275,258A patent/CA1069691A/en not_active Expired
- 1977-04-05 DD DD7700198260A patent/DD129986A5/xx unknown
- 1977-04-07 NL NLAANVRAGE7703922,A patent/NL170664C/xx not_active IP Right Cessation
- 1977-04-08 FR FR7710717A patent/FR2347636A1/fr active Granted
- 1977-04-08 BE BE176574A patent/BE853428A/xx not_active IP Right Cessation
- 1977-04-08 SU SU772467952A patent/SU652911A3/ru active
- 1977-04-11 JP JP4128677A patent/JPS52123906A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| GB1532185A (en) | 1978-11-15 |
| HU173206B (hu) | 1979-03-28 |
| DD129986A5 (de) | 1978-02-22 |
| IT1086873B (it) | 1985-05-31 |
| DE2615767B1 (de) | 1977-07-07 |
| US4071229A (en) | 1978-01-31 |
| NL170664B (nl) | 1982-07-01 |
| JPS52123906A (en) | 1977-10-18 |
| CH600274A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-06-15 |
| CA1069691A (en) | 1980-01-15 |
| CS214741B2 (en) | 1982-05-28 |
| NL7703922A (nl) | 1977-10-12 |
| SU652911A3 (ru) | 1979-03-15 |
| BE853428A (fr) | 1977-08-01 |
| FR2347636B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1982-04-09 |
| NL170664C (nl) | 1982-12-01 |
| JPS5638868B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1981-09-09 |
| FR2347636A1 (fr) | 1977-11-04 |
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