DE2512099C3 - - Google Patents
Info
- Publication number
- DE2512099C3 DE2512099C3 DE2512099A DE2512099A DE2512099C3 DE 2512099 C3 DE2512099 C3 DE 2512099C3 DE 2512099 A DE2512099 A DE 2512099A DE 2512099 A DE2512099 A DE 2512099A DE 2512099 C3 DE2512099 C3 DE 2512099C3
- Authority
- DE
- Germany
- Prior art keywords
- reaction
- phosphoric acid
- calcium
- calcium carbonate
- product
- 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
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 70
- 238000000034 method Methods 0.000 claims description 59
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 48
- 238000006243 chemical reaction Methods 0.000 claims description 44
- 239000001506 calcium phosphate Substances 0.000 claims description 37
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 35
- 239000011575 calcium Substances 0.000 claims description 32
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 22
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 229910052791 calcium Inorganic materials 0.000 claims description 17
- 239000000725 suspension Substances 0.000 claims description 17
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 16
- 229910000150 monocalcium phosphate Inorganic materials 0.000 claims description 16
- 239000011541 reaction mixture Substances 0.000 claims description 16
- 235000019739 Dicalciumphosphate Nutrition 0.000 claims description 15
- 229910000390 dicalcium phosphate Inorganic materials 0.000 claims description 15
- 229940038472 dicalcium phosphate Drugs 0.000 claims description 15
- 239000007795 chemical reaction product Substances 0.000 claims description 13
- 239000008187 granular material Substances 0.000 claims description 11
- 239000000376 reactant Substances 0.000 claims description 9
- 239000007900 aqueous suspension Substances 0.000 claims description 4
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 claims 1
- 239000000047 product Substances 0.000 description 34
- 235000011007 phosphoric acid Nutrition 0.000 description 31
- 239000000463 material Substances 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000002245 particle Substances 0.000 description 15
- NEFBYIFKOOEVPA-UHFFFAOYSA-K dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 description 14
- 239000002253 acid Substances 0.000 description 12
- 238000002156 mixing Methods 0.000 description 12
- 241001465754 Metazoa Species 0.000 description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 235000013339 cereals Nutrition 0.000 description 11
- 229910052698 phosphorus Inorganic materials 0.000 description 11
- 239000011574 phosphorus Substances 0.000 description 11
- 229910019142 PO4 Inorganic materials 0.000 description 10
- 235000021317 phosphate Nutrition 0.000 description 10
- 238000005469 granulation Methods 0.000 description 9
- 230000003179 granulation Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 235000011010 calcium phosphates Nutrition 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 235000010755 mineral Nutrition 0.000 description 6
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical class [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910000389 calcium phosphate Inorganic materials 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229940043430 calcium compound Drugs 0.000 description 3
- 150000001674 calcium compounds Chemical class 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 3
- 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 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 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
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 239000008346 aqueous phase Substances 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
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- -1 caustic soda Chemical class 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- DNHVXYDGZKWYNU-UHFFFAOYSA-N lead;hydrate Chemical compound O.[Pb] DNHVXYDGZKWYNU-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000004137 magnesium phosphate Substances 0.000 description 1
- 235000010994 magnesium phosphates Nutrition 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
- 238000005550 wet granulation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2405—Stationary reactors without moving elements inside provoking a turbulent flow of the reactants, such as in cyclones, or having a high Reynolds-number
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/26—Compounds containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
- C01B25/322—Preparation by neutralisation of orthophosphoric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00159—Controlling the temperature controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00162—Controlling or regulating processes controlling the pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00182—Controlling or regulating processes controlling the level of reactants in the reactor vessel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Animal Husbandry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fodder In General (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Fertilizers (AREA)
- Materials For Medical Uses (AREA)
- Photoreceptors In Electrophotography (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO740984A NO132685C (en:Method) | 1974-03-19 | 1974-03-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2512099A1 DE2512099A1 (de) | 1975-09-25 |
| DE2512099B2 DE2512099B2 (de) | 1978-07-13 |
| DE2512099C3 true DE2512099C3 (en:Method) | 1979-03-15 |
Family
ID=19881520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2512099A Granted DE2512099B2 (de) | 1974-03-19 | 1975-03-19 | Verfahren zur Herstellung von Monocalciumphosphat und/oder Dicalciumphosphat |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS50157299A (en:Method) |
| BE (1) | BE826881A (en:Method) |
| BR (1) | BR7501598A (en:Method) |
| CA (1) | CA1060631A (en:Method) |
| DD (1) | DD116205A5 (en:Method) |
| DE (1) | DE2512099B2 (en:Method) |
| DK (1) | DK109575A (en:Method) |
| EG (1) | EG11653A (en:Method) |
| ES (1) | ES435726A1 (en:Method) |
| FI (1) | FI58110C (en:Method) |
| FR (1) | FR2264775B1 (en:Method) |
| GB (1) | GB1497716A (en:Method) |
| HU (1) | HU170874B (en:Method) |
| IE (1) | IE40823B1 (en:Method) |
| IL (1) | IL46825A (en:Method) |
| IN (1) | IN140563B (en:Method) |
| IT (1) | IT1032330B (en:Method) |
| NL (1) | NL7503212A (en:Method) |
| NO (1) | NO132685C (en:Method) |
| SE (1) | SE406191C (en:Method) |
| TR (1) | TR18505A (en:Method) |
| YU (1) | YU61675A (en:Method) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK137180B (da) * | 1975-10-10 | 1978-01-30 | Dansk Ind Syndikat | Fremgangsmåde til fremstilling af en pulver- eller granulatformet, ikke-støvende mineralstofblanding indeholdende calciumphosphater. |
| JPS6182841A (ja) * | 1984-09-29 | 1986-04-26 | Agency Of Ind Science & Technol | リン除去剤 |
| DE3510694A1 (de) * | 1985-03-23 | 1986-09-25 | Hoechst Ag, 6230 Frankfurt | Verfahren zur herstellung von calciumhydrogenphosphat |
| DE3515695C2 (de) * | 1985-05-02 | 1987-03-05 | Benckiser-Knapsack Gmbh, 6802 Ladenburg | Verfahren zur Herstellung von grobkörnigem Dicalciumphosphat-Dihydrat |
| JPS6258958A (ja) * | 1985-09-10 | 1987-03-14 | Sanraku Inc | 粒状ミネラル混合飼料 |
| DE4006734C1 (en:Method) * | 1990-03-03 | 1991-07-25 | Benckiser-Knapsack Gmbh, 6802 Ladenburg, De | |
| DE19623082C1 (de) * | 1996-06-10 | 1998-04-16 | Axel Bruckert | Verbessertes Monocalciumphosphatmonohydrat zur Verwendung als Futtermittelkomponente sowie ein Verfahren zu dessen Herstellung |
| AU3451997A (en) * | 1997-07-08 | 1999-02-08 | S A Feed Phosphates (Proprietary) Limited | A method for the production of a mono-calcium phosphate product |
| NL1007622C2 (nl) * | 1997-11-26 | 1999-05-27 | Axel Bruckert | Verbeterd monocalciumfosfaat-monohydraat voor toepassing als voedermiddelcomponent alsmede een werkwijze voor de productie daarvan. |
| RU2149828C1 (ru) * | 1999-07-01 | 2000-05-27 | Общество с ограниченной ответственностью "Эковита" | Способ получения кормового дикальцийфосфата |
| DE102012215421B4 (de) | 2012-08-30 | 2019-08-29 | Centrum Für Angewandte Nanotechnologie (Can) Gmbh | Verfahren zur Herstellung von Kern/Schale-Nanopartikeln |
| CN111003698B (zh) * | 2019-11-21 | 2025-03-11 | 江阴市星宇化工有限公司 | 一种高活性纳米级磷酸三钙生产反应釜及其使用方法 |
-
1974
- 1974-03-19 NO NO740984A patent/NO132685C/no unknown
-
1975
- 1975-03-11 IE IE526/75A patent/IE40823B1/xx unknown
- 1975-03-11 GB GB10093/75A patent/GB1497716A/en not_active Expired
- 1975-03-12 IN IN478/CAL/1975A patent/IN140563B/en unknown
- 1975-03-13 YU YU00616/75A patent/YU61675A/xx unknown
- 1975-03-13 IL IL46825A patent/IL46825A/en unknown
- 1975-03-17 SE SE7502984A patent/SE406191C/xx not_active IP Right Cessation
- 1975-03-17 IT IT48634/75A patent/IT1032330B/it active
- 1975-03-17 EG EG138/75A patent/EG11653A/xx active
- 1975-03-18 DK DK109575A patent/DK109575A/da not_active Application Discontinuation
- 1975-03-18 BR BR1598/75A patent/BR7501598A/pt unknown
- 1975-03-18 ES ES435726A patent/ES435726A1/es not_active Expired
- 1975-03-18 HU HU75NO00000190A patent/HU170874B/hu unknown
- 1975-03-18 FI FI750784A patent/FI58110C/fi not_active IP Right Cessation
- 1975-03-18 TR TR18505A patent/TR18505A/xx unknown
- 1975-03-18 CA CA222,335A patent/CA1060631A/en not_active Expired
- 1975-03-18 NL NL7503212A patent/NL7503212A/xx not_active Application Discontinuation
- 1975-03-18 FR FR7508457A patent/FR2264775B1/fr not_active Expired
- 1975-03-19 DE DE2512099A patent/DE2512099B2/de active Granted
- 1975-03-19 JP JP50032497A patent/JPS50157299A/ja active Pending
- 1975-03-19 DD DD184872A patent/DD116205A5/xx unknown
- 1975-03-19 BE BE154503A patent/BE826881A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1032330B (it) | 1979-05-30 |
| FR2264775B1 (en:Method) | 1977-07-22 |
| FI58110B (fi) | 1980-08-29 |
| SE7502984L (en:Method) | 1975-09-22 |
| BE826881A (fr) | 1975-07-16 |
| NO132685C (en:Method) | 1977-05-24 |
| DE2512099A1 (de) | 1975-09-25 |
| IE40823L (en) | 1975-09-19 |
| BR7501598A (pt) | 1975-12-16 |
| GB1497716A (en) | 1978-01-12 |
| FI750784A7 (en:Method) | 1975-09-20 |
| JPS50157299A (en:Method) | 1975-12-19 |
| YU61675A (en) | 1982-05-31 |
| IL46825A0 (en) | 1975-05-22 |
| TR18505A (tr) | 1977-03-04 |
| HU170874B (hu) | 1977-09-28 |
| SE406191C (sv) | 1986-06-09 |
| FR2264775A1 (en:Method) | 1975-10-17 |
| IN140563B (en:Method) | 1976-11-27 |
| SE406191B (sv) | 1979-01-29 |
| NO132685B (en:Method) | 1975-09-08 |
| DK109575A (en:Method) | 1975-09-20 |
| EG11653A (en) | 1977-12-31 |
| DD116205A5 (en:Method) | 1975-11-12 |
| CA1060631A (en) | 1979-08-21 |
| IE40823B1 (en) | 1979-08-29 |
| DE2512099B2 (de) | 1978-07-13 |
| AU7910575A (en) | 1976-09-16 |
| IL46825A (en) | 1977-03-31 |
| FI58110C (fi) | 1980-12-10 |
| NL7503212A (nl) | 1975-09-23 |
| ES435726A1 (es) | 1977-01-16 |
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