SE438668B - Sett att framstella mycket ren aluminiumoxid av ett mineral innehallande fororeningar - Google Patents
Sett att framstella mycket ren aluminiumoxid av ett mineral innehallande fororeningarInfo
- Publication number
- SE438668B SE438668B SE7904257A SE7904257A SE438668B SE 438668 B SE438668 B SE 438668B SE 7904257 A SE7904257 A SE 7904257A SE 7904257 A SE7904257 A SE 7904257A SE 438668 B SE438668 B SE 438668B
- Authority
- SE
- Sweden
- Prior art keywords
- liquid
- alumina
- impurities
- fraction
- hydrogen chloride
- Prior art date
Links
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 33
- 239000011707 mineral Substances 0.000 title claims description 33
- 229910052782 aluminium Inorganic materials 0.000 title description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title description 11
- 239000003344 environmental pollutant Substances 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims description 102
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 98
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 70
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 70
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 55
- 239000012535 impurity Substances 0.000 claims description 55
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 47
- 239000012452 mother liquor Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 16
- 238000001704 evaporation Methods 0.000 claims description 15
- 239000013078 crystal Substances 0.000 claims description 14
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 8
- JGDITNMASUZKPW-UHFFFAOYSA-K aluminium trichloride hexahydrate Chemical compound O.O.O.O.O.O.Cl[Al](Cl)Cl JGDITNMASUZKPW-UHFFFAOYSA-K 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 5
- 235000011151 potassium sulphates Nutrition 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 4
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 4
- 239000001120 potassium sulphate Substances 0.000 claims description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 3
- 150000001805 chlorine compounds Chemical class 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- 238000001354 calcination Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- -1 ferrous potassium sulphates Chemical class 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical class Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 79
- 235000010755 mineral Nutrition 0.000 description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 229910001868 water Inorganic materials 0.000 description 21
- 230000008020 evaporation Effects 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 229910052593 corundum Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 238000005406 washing Methods 0.000 description 11
- 229910001845 yogo sapphire Inorganic materials 0.000 description 11
- 238000002425 crystallisation Methods 0.000 description 9
- 230000008025 crystallization Effects 0.000 description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000011591 potassium Substances 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 6
- 239000007790 solid phase Substances 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 229910021653 sulphate ion Inorganic materials 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000007872 degassing Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 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
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid 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
- 229910052681 coesite Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- PKMPKIZPQRMWRZ-UHFFFAOYSA-L S(=O)(=O)([O-])[O-].[K+].[Ti+4] Chemical compound S(=O)(=O)([O-])[O-].[K+].[Ti+4] PKMPKIZPQRMWRZ-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 235000001465 calcium Nutrition 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L magnesium sulphate Substances [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003359 percent control normalization Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 235000014786 phosphorus Nutrition 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F7/306—Thermal decomposition of hydrated chlorides, e.g. of aluminium trichloride hexahydrate
-
- 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
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/20—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts
- C01F7/22—Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts with halides or halogen acids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7815369A FR2426018A1 (fr) | 1978-05-18 | 1978-05-18 | Procede d'obtention d'alumine pure par attaque chlorhydrique de minerais alumineux et extraction des impuretes par un traitement sulfurique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7904257L SE7904257L (sv) | 1979-11-19 |
| SE438668B true SE438668B (sv) | 1985-04-29 |
Family
ID=9208618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7904257A SE438668B (sv) | 1978-05-18 | 1979-05-15 | Sett att framstella mycket ren aluminiumoxid av ett mineral innehallande fororeningar |
Country Status (27)
| Country | Link |
|---|---|
| US (1) | US4237102A (de) |
| EP (1) | EP0006070B1 (de) |
| JP (1) | JPS54150396A (de) |
| AR (1) | AR218538A1 (de) |
| AT (1) | AT375325B (de) |
| AU (1) | AU530734B2 (de) |
| BE (1) | BE876361A (de) |
| BR (1) | BR7903021A (de) |
| CA (1) | CA1103038A (de) |
| DD (1) | DD143595A5 (de) |
| DE (1) | DE2960300D1 (de) |
| DK (1) | DK203479A (de) |
| FR (1) | FR2426018A1 (de) |
| GR (1) | GR65615B (de) |
| HU (1) | HU184178B (de) |
| IL (1) | IL57287A (de) |
| IS (1) | IS2487A7 (de) |
| IT (1) | IT1114010B (de) |
| LU (1) | LU81288A1 (de) |
| MA (1) | MA18437A1 (de) |
| MX (1) | MX152070A (de) |
| NO (1) | NO154164C (de) |
| NZ (1) | NZ190464A (de) |
| OA (1) | OA06297A (de) |
| PL (1) | PL115225B1 (de) |
| SE (1) | SE438668B (de) |
| ZA (1) | ZA792411B (de) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4428912A (en) | 1979-06-20 | 1984-01-31 | Public Service Company Of New Mexico | Regeneration of chloridizing agent from chlorination residue |
| NO300004B1 (no) * | 1994-03-30 | 1997-03-17 | Elkem Materials | Fremgangsmåte for gjenvinning av metallklorid fra silisium eller ferrosilisiumlegering som er blitt reagert med kloreringsmidler |
| US5554352A (en) * | 1995-05-09 | 1996-09-10 | Construction Material Resources | Processed silica as a natural pozzolan for use as a cementitious component in concrete and concrete products |
| US6468483B2 (en) | 2000-02-04 | 2002-10-22 | Goldendale Aluminum Company | Process for treating alumina-bearing ores to recover metal values therefrom |
| AU2008253545B2 (en) | 2007-05-21 | 2012-04-12 | Orbite Aluminae Inc. | Processes for extracting aluminum and iron from aluminous ores |
| EP2686458A4 (de) | 2011-03-18 | 2015-04-15 | Orbite Aluminae Inc | Verfahren zur wiedergewinnung von seltenerdelementen aus aluminiumhaltigen materialien |
| CN103857810A (zh) | 2011-05-04 | 2014-06-11 | 奥贝特铝业有限公司 | 用于从各种矿石中回收稀土元素的方法 |
| BR112013030819A2 (pt) | 2011-06-03 | 2019-09-24 | Orbite Aluminae Inc | método para separar íons de ferror de íons de alumínio contidos em uma composição aquosa e método para preparar hematita |
| CN104039706A (zh) | 2011-09-16 | 2014-09-10 | 奥贝特铝业有限公司 | 制备氧化铝和各种其他产品的工艺 |
| CN104302791B (zh) | 2012-01-10 | 2017-03-15 | 奥佰特氧化铝有限公司 | 用于处理赤泥的方法 |
| AU2013203808B2 (en) | 2012-03-29 | 2016-07-28 | Aem Technologies Inc. | Processes for treating fly ashes |
| CA2878744C (en) | 2012-07-12 | 2020-09-15 | Orbite Aluminae Inc. | Processes for preparing aluminum chloride and various other products by hcl leaching |
| IN2015DN00599A (de) * | 2012-07-20 | 2015-06-26 | Obshchestvo S Ogranichennoy Otvetstvennostyu Obedinennaya Kompaniya Rusal Inzh T Ts | |
| RU2554136C2 (ru) * | 2012-07-20 | 2015-06-27 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Способ получения глинозема |
| RU2565217C2 (ru) * | 2012-09-13 | 2015-10-20 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Способ получения глинозема |
| CA2885255C (en) | 2012-09-26 | 2015-12-22 | Orbite Aluminae Inc. | Processes for preparing alumina and magnesium chloride by hc1 leaching of various materials |
| US9534274B2 (en) | 2012-11-14 | 2017-01-03 | Orbite Technologies Inc. | Methods for purifying aluminium ions |
| WO2014104920A1 (ru) * | 2012-12-29 | 2014-07-03 | Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" | Способ получения глинозема из низкосортного алюминийсодержащего сырья |
| US11746021B2 (en) | 2019-04-18 | 2023-09-05 | Nextchem, Llc | High purity aluminum oxide via electrodialysis |
| EP4015456A1 (de) * | 2020-12-17 | 2022-06-22 | SiQAl UG (haftungsbeschränkt) | Verfahren zur herstellung von tonerde aus einer rohaluminiumlösung unter verwendung von al2(so4)3 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR574983A (fr) * | 1923-11-30 | 1924-07-22 | Procédé de production de sels d'aluminium chimiquement purs | |
| US2376696A (en) * | 1942-06-10 | 1945-05-22 | Chemical Foundation Inc | Production of alumina |
| GB982098A (en) * | 1961-07-10 | 1965-02-03 | Anaconda Co | Improvements in production of alumina |
| US3406010A (en) * | 1965-09-08 | 1968-10-15 | Anaconda Co | Recovery of pure crystals of aici3.6h2o and production of aluminum oxide product therefrom |
| DE1592156C3 (de) * | 1966-04-04 | 1978-06-29 | Pechiney Compagnie De Produits Chimiques Et Electrometallurgiques, Paris | Verfahren zur Aluminiumsulfat- und Beglei tstoffgewinnung aus aluminiumhaltigen Erzen |
| FR1554586A (de) * | 1966-04-28 | 1969-01-24 | ||
| FR1541467A (fr) * | 1967-10-19 | 1968-10-04 | Anaconda Co | Procédé de séparation de sels métalliques purs à partir de leurs solutions aqueuses impures |
| FR1558347A (de) * | 1967-10-25 | 1969-02-28 | ||
| BE791752A (fr) * | 1971-11-25 | 1973-05-22 | Pechiney Aluminium | Procede de traitement acide continu des argiles et schistes crus |
| FR2381717A1 (fr) * | 1977-02-28 | 1978-09-22 | Pechiney Aluminium | Procede d'obtention d'alumine pure par attaque acide de minerais alumineux contenant d'autres elements |
| FR2381718A1 (fr) * | 1977-02-28 | 1978-09-22 | Pechiney Aluminium | Procede d'obtention d'alumine pure par attaque acide de minerais alumineux contenant d'autres elements |
-
1978
- 1978-05-18 FR FR7815369A patent/FR2426018A1/fr active Granted
-
1979
- 1979-03-16 IS IS2487A patent/IS2487A7/is unknown
- 1979-05-08 US US06/035,440 patent/US4237102A/en not_active Expired - Lifetime
- 1979-05-10 EP EP79420022A patent/EP0006070B1/de not_active Expired
- 1979-05-10 DE DE7979420022T patent/DE2960300D1/de not_active Expired
- 1979-05-15 IL IL57287A patent/IL57287A/xx unknown
- 1979-05-15 AU AU47072/79A patent/AU530734B2/en not_active Ceased
- 1979-05-15 AR AR276522A patent/AR218538A1/es active
- 1979-05-15 PL PL1979215597A patent/PL115225B1/pl unknown
- 1979-05-15 SE SE7904257A patent/SE438668B/sv not_active IP Right Cessation
- 1979-05-15 GR GR59093A patent/GR65615B/el unknown
- 1979-05-15 HU HU79PE1079A patent/HU184178B/hu not_active IP Right Cessation
- 1979-05-16 NZ NZ190464A patent/NZ190464A/xx unknown
- 1979-05-16 BR BR7903021A patent/BR7903021A/pt unknown
- 1979-05-16 CA CA327,796A patent/CA1103038A/fr not_active Expired
- 1979-05-16 IT IT22699/79A patent/IT1114010B/it active
- 1979-05-16 JP JP6025379A patent/JPS54150396A/ja active Granted
- 1979-05-16 NO NO791639A patent/NO154164C/no unknown
- 1979-05-16 MX MX177676A patent/MX152070A/es unknown
- 1979-05-17 AT AT0364779A patent/AT375325B/de not_active IP Right Cessation
- 1979-05-17 MA MA18631A patent/MA18437A1/fr unknown
- 1979-05-17 DD DD79212965A patent/DD143595A5/de unknown
- 1979-05-17 DK DK203479A patent/DK203479A/da unknown
- 1979-05-17 ZA ZA792411A patent/ZA792411B/xx unknown
- 1979-05-18 LU LU81288A patent/LU81288A1/xx unknown
- 1979-05-18 BE BE0/195241A patent/BE876361A/xx not_active IP Right Cessation
- 1979-07-17 OA OA56851A patent/OA06297A/xx unknown
Also Published As
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