NO770802L - Fremgangsm}te for fremstilling av fosforsyre - Google Patents
Fremgangsm}te for fremstilling av fosforsyreInfo
- Publication number
- NO770802L NO770802L NO770802A NO770802A NO770802L NO 770802 L NO770802 L NO 770802L NO 770802 A NO770802 A NO 770802A NO 770802 A NO770802 A NO 770802A NO 770802 L NO770802 L NO 770802L
- Authority
- NO
- Norway
- Prior art keywords
- calcium
- oxalic acid
- precipitate
- phosphoric acid
- amount
- Prior art date
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims description 56
- 238000000034 method Methods 0.000 title claims description 33
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims description 28
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 72
- 235000006408 oxalic acid Nutrition 0.000 claims description 24
- 239000002367 phosphate rock Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 claims description 12
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 12
- 150000003891 oxalate salts Chemical class 0.000 claims description 12
- 150000002739 metals Chemical class 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 10
- 239000011435 rock Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 235000011132 calcium sulphate Nutrition 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 claims description 5
- 239000001175 calcium sulphate Substances 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 229910052770 Uranium Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000012452 mother liquor Substances 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 2
- 159000000007 calcium salts Chemical class 0.000 claims 2
- MHMCOSLCKPWGQG-UHFFFAOYSA-H [U+6].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O Chemical compound [U+6].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O MHMCOSLCKPWGQG-UHFFFAOYSA-H 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 claims 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims 1
- 239000004575 stone Substances 0.000 description 14
- 230000029087 digestion Effects 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 6
- 239000010452 phosphate Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 description 4
- 239000001506 calcium phosphate Substances 0.000 description 4
- -1 calcium-carbonate sulphides Chemical class 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 229910000150 monocalcium phosphate Inorganic materials 0.000 description 4
- 235000019691 monocalcium phosphate Nutrition 0.000 description 4
- 238000002203 pretreatment Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229960005069 calcium Drugs 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- DNYWZCXLKNTFFI-UHFFFAOYSA-N uranium Chemical compound [U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U][U] DNYWZCXLKNTFFI-UHFFFAOYSA-N 0.000 description 2
- PFCHFHIRKBAQGU-UHFFFAOYSA-N 3-hexanone Chemical compound CCCC(=O)CC PFCHFHIRKBAQGU-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-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
- 239000004743 Polypropylene Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229960003563 calcium carbonate Drugs 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 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
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0204—Obtaining thorium, uranium, or other actinides obtaining uranium
- C22B60/0217—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes
- C22B60/0252—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries
- C22B60/0278—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries by chemical methods
- C22B60/0282—Solutions containing P ions, e.g. treatment of solutions resulting from the leaching of phosphate ores or recovery of uranium from wet-process phosphoric acid
-
- 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
- C01B25/18—Phosphoric acid
- C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
- C01B25/2208—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with an acid or a mixture of acids other than sulfuric acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
-
- 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
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0204—Obtaining thorium, uranium, or other actinides obtaining uranium
- C22B60/0217—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes
- C22B60/0221—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes by leaching
- C22B60/0226—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes by leaching using acidic solutions or liquors
- C22B60/0243—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes by leaching using acidic solutions or liquors phosphorated ion as active agent
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Saccharide Compounds (AREA)
- Silicon Compounds (AREA)
- Removal Of Specific Substances (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66533076A | 1976-03-09 | 1976-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO770802L true NO770802L (no) | 1977-09-12 |
Family
ID=24669671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO770802A NO770802L (no) | 1976-03-09 | 1977-03-08 | Fremgangsm}te for fremstilling av fosforsyre |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US4108957A (it) |
| JP (1) | JPS52125495A (it) |
| AU (1) | AU2298877A (it) |
| BE (1) | BE852230A (it) |
| BR (1) | BR7701394A (it) |
| DE (1) | DE2652766A1 (it) |
| DK (1) | DK101577A (it) |
| ES (1) | ES455402A1 (it) |
| FI (1) | FI770714A (it) |
| GB (1) | GB1533352A (it) |
| IL (1) | IL51459A0 (it) |
| IN (1) | IN145698B (it) |
| IT (1) | IT1114757B (it) |
| NL (1) | NL7702070A (it) |
| NO (1) | NO770802L (it) |
| NZ (1) | NZ183504A (it) |
| OA (1) | OA05589A (it) |
| PT (1) | PT65852B (it) |
| SE (1) | SE7702502L (it) |
| ZA (1) | ZA771337B (it) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4288412A (en) * | 1978-08-31 | 1981-09-08 | Institute Of Nuclear Energy Research | Post treatment method for the recovery of uranium from wet-process phosphoric acid |
| PL124240B1 (en) * | 1979-06-27 | 1983-01-31 | Politechnika Wroclawska | Method of manufacture of mixed fertilizers |
| US4390509A (en) * | 1980-03-10 | 1983-06-28 | Agrico Chemical Company | Process for manufacturing ammonium phosphate utilizing an oxalic acid acidulating process |
| US4490336A (en) * | 1981-05-27 | 1984-12-25 | Prodeco, Inc. | Process for stripping uranium from an alkyl pyrophosphoric acid |
| FR2535702B1 (fr) * | 1982-11-10 | 1986-09-12 | Rhone Poulenc Chim Base | Procede de recuperation globale de l'uranium, de l'yttrium, du thorium et des terres rares contenus dans un minerai phosphate au cours de la preparation d'acide phosphorique par voie humide |
| FR2596383B1 (fr) * | 1986-03-28 | 1990-10-26 | Cogema | Procede de separation du fer a partir d'une solution organique contenant de l'uranium |
| US5262963A (en) * | 1991-06-28 | 1993-11-16 | Imc Fertilizer, Inc. | Automatic control system for phosphoric acid plant |
| US5395603A (en) * | 1993-04-21 | 1995-03-07 | Imc Fertilizer, Inc. | Automatic control system for a chemical process, especially a wet process phosphoric acid plant |
| BE1013634A3 (fr) * | 2000-08-03 | 2002-05-07 | Ecophos | Procede de production d'acide phosphorique. |
| US6967052B2 (en) * | 2002-10-15 | 2005-11-22 | Invista North America S.A.R.L. | Stitched-bonded yarn surface structure |
| TN2017000124A1 (en) | 2014-10-30 | 2018-10-19 | Jacobs Eng Group Inc | Method for removing iron in the manufacture of phosphoric acid |
| CN104849132B (zh) * | 2015-05-30 | 2018-06-15 | 济南盛泰电子科技有限公司 | 一种消解赶酸仪 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2882123A (en) * | 1955-04-18 | 1959-04-14 | Ray S Long | Process for the recovery of uranium from phosphatic ore |
| US3311450A (en) * | 1963-05-09 | 1967-03-28 | Alon Alexander | Process for the manufacture of phosphoric acid |
| NL298968A (it) * | 1963-10-08 | |||
| US3792151A (en) * | 1971-10-18 | 1974-02-12 | Atlantic Richfield Co | Process for producing phosphoric acid |
| US4012491A (en) * | 1971-10-19 | 1977-03-15 | United States Gypsum Company | Phosphate process |
| US3928016A (en) * | 1973-05-22 | 1975-12-23 | Robert Michel | Process of manufacturing phosphate fertilizer |
| US4044107A (en) * | 1973-11-16 | 1977-08-23 | Davy Powergas, Inc. | Process for the manufacture of wet process phosphoric acid using wet-grinding of the phosphate rock feed |
-
1976
- 1976-11-16 DE DE19762652766 patent/DE2652766A1/de active Pending
- 1976-11-17 PT PT65852A patent/PT65852B/pt unknown
-
1977
- 1977-01-24 US US05/761,855 patent/US4108957A/en not_active Expired - Lifetime
- 1977-01-27 ES ES455402A patent/ES455402A1/es not_active Expired
- 1977-02-16 IL IL51459A patent/IL51459A0/xx unknown
- 1977-02-25 NL NL7702070A patent/NL7702070A/xx not_active Application Discontinuation
- 1977-02-25 IN IN278/CAL/77A patent/IN145698B/en unknown
- 1977-03-04 NZ NZ183504A patent/NZ183504A/xx unknown
- 1977-03-07 OA OA56091A patent/OA05589A/xx unknown
- 1977-03-07 SE SE7702502A patent/SE7702502L/xx unknown
- 1977-03-07 GB GB9510/77A patent/GB1533352A/en not_active Expired
- 1977-03-07 ZA ZA00771337A patent/ZA771337B/xx unknown
- 1977-03-07 FI FI770714A patent/FI770714A/fi not_active Application Discontinuation
- 1977-03-08 DK DK101577A patent/DK101577A/da not_active Application Discontinuation
- 1977-03-08 BE BE175600A patent/BE852230A/xx unknown
- 1977-03-08 BR BR7701394A patent/BR7701394A/pt unknown
- 1977-03-08 NO NO770802A patent/NO770802L/no unknown
- 1977-03-08 AU AU22988/77A patent/AU2298877A/en not_active Expired
- 1977-03-08 JP JP2533677A patent/JPS52125495A/ja active Pending
- 1977-03-08 IT IT21040/77A patent/IT1114757B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| NL7702070A (nl) | 1977-09-13 |
| IL51459A0 (en) | 1977-04-29 |
| ES455402A1 (es) | 1977-12-16 |
| IT1114757B (it) | 1986-01-27 |
| BE852230A (fr) | 1977-07-01 |
| PT65852B (en) | 1978-10-12 |
| DE2652766A1 (de) | 1977-09-22 |
| SE7702502L (sv) | 1977-09-10 |
| PT65852A (en) | 1976-12-01 |
| NZ183504A (en) | 1978-04-03 |
| GB1533352A (en) | 1978-11-22 |
| DK101577A (da) | 1977-09-10 |
| AU2298877A (en) | 1978-09-14 |
| IN145698B (it) | 1978-12-02 |
| US4108957A (en) | 1978-08-22 |
| JPS52125495A (en) | 1977-10-21 |
| ZA771337B (en) | 1978-01-25 |
| BR7701394A (pt) | 1977-11-01 |
| OA05589A (fr) | 1981-04-30 |
| FI770714A (it) | 1977-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO770802L (no) | Fremgangsm}te for fremstilling av fosforsyre | |
| CN1122638C (zh) | 氨碱废液与含硫酸钠废液综合利用方法 | |
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