DE102007005286B4 - Verfahren zur Herstellung von Ammoniumparawolframathydraten und Ammoniumparawolframatdekahydrat - Google Patents
Verfahren zur Herstellung von Ammoniumparawolframathydraten und Ammoniumparawolframatdekahydrat Download PDFInfo
- Publication number
- DE102007005286B4 DE102007005286B4 DE102007005286A DE102007005286A DE102007005286B4 DE 102007005286 B4 DE102007005286 B4 DE 102007005286B4 DE 102007005286 A DE102007005286 A DE 102007005286A DE 102007005286 A DE102007005286 A DE 102007005286A DE 102007005286 B4 DE102007005286 B4 DE 102007005286B4
- Authority
- DE
- Germany
- Prior art keywords
- mixer
- phase
- ammonia
- organic phase
- containing aqueous
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 52
- -1 ammonium paratungstate hydrates Chemical class 0.000 title description 8
- 238000002360 preparation method Methods 0.000 title description 8
- 239000012074 organic phase Substances 0.000 claims abstract description 57
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 44
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 23
- 239000010937 tungsten Substances 0.000 claims abstract description 22
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 21
- 239000007864 aqueous solution Substances 0.000 claims abstract description 12
- XAYGUHUYDMLJJV-UHFFFAOYSA-Z decaazanium;dioxido(dioxo)tungsten;hydron;trioxotungsten Chemical compound [H+].[H+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].[NH4+].O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O XAYGUHUYDMLJJV-UHFFFAOYSA-Z 0.000 claims abstract description 9
- 238000010924 continuous production Methods 0.000 claims abstract description 4
- 239000012071 phase Substances 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 15
- 239000008346 aqueous phase Substances 0.000 claims description 13
- 238000000605 extraction Methods 0.000 claims description 13
- 238000005191 phase separation Methods 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 10
- 239000012452 mother liquor Substances 0.000 claims description 9
- 238000009826 distribution Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 39
- 239000000047 product Substances 0.000 description 29
- 238000002425 crystallisation Methods 0.000 description 13
- 230000008025 crystallization Effects 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000001878 scanning electron micrograph Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 150000004691 decahydrates Chemical class 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 230000029087 digestion Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000000622 liquid--liquid extraction Methods 0.000 description 5
- 238000000638 solvent extraction Methods 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- PLLBRTOLHQQAQQ-UHFFFAOYSA-N 8-methylnonan-1-ol Chemical compound CC(C)CCCCCCCO PLLBRTOLHQQAQQ-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000005526 G1 to G0 transition Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 150000004685 tetrahydrates Chemical class 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000004108 freeze drying Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- YOFPVMWVLDSWKR-UHFFFAOYSA-N 11-methyl-n-(11-methyldodecyl)dodecan-1-amine Chemical compound CC(C)CCCCCCCCCCNCCCCCCCCCCC(C)C YOFPVMWVLDSWKR-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 0 CC(CCC12CC3C1)*2C3=C Chemical compound CC(CCC12CC3C1)*2C3=C 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000003973 alkyl amines Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000012866 crystallographic experiment Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 150000003658 tungsten compounds Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G41/00—Compounds of tungsten
- C01G41/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/01—Crystal-structural characteristics depicted by a TEM-image
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/60—Compounds characterised by their crystallite size
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
-
- 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
- C01P2006/10—Solid density
-
- 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
- C01P2006/11—Powder tap density
-
- 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
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007005286A DE102007005286B4 (de) | 2007-02-02 | 2007-02-02 | Verfahren zur Herstellung von Ammoniumparawolframathydraten und Ammoniumparawolframatdekahydrat |
| DE102007063691A DE102007063691B4 (de) | 2007-02-02 | 2007-02-02 | Ammoniumparawolframatdekahydrat und Verfahren zur Herstellung |
| EP08708312.7A EP2118017B1 (de) | 2007-02-02 | 2008-01-29 | Verfahren zur herstellung von ammoniumparawolframathydraten und ammoniumparawolframatdekahydrat |
| ES08708312.7T ES2608681T3 (es) | 2007-02-02 | 2008-01-29 | Procedimiento para la preparación de hidratos de parawolframato de amonio y parawolframato de amonio decahidrato |
| US12/524,957 US8216533B2 (en) | 2007-02-02 | 2008-01-29 | Method for producing ammonium paratungstate hydrates and ammonium paratungstate decahydrate |
| PT87083127T PT2118017T (pt) | 2007-02-02 | 2008-01-29 | Método de produção de hidratos de paratungstato de amónio e decahidrato de paratungstato de amónio |
| CN2008800039606A CN101600654B (zh) | 2007-02-02 | 2008-01-29 | 生产仲钨酸铵水合物和十水合仲钨酸铵的方法 |
| JP2009547657A JP5424897B2 (ja) | 2007-02-02 | 2008-01-29 | パラタングステン酸アンモニウム水和物を製造する方法及びパラタングステン酸アンモニウム十水和物 |
| PCT/EP2008/050995 WO2008092837A1 (de) | 2007-02-02 | 2008-01-29 | Verfahren zur herstellung von ammoniumparawolframathydraten und ammoniumparawolframatdekahydrat |
| US13/482,075 US8440161B2 (en) | 2007-02-02 | 2012-05-29 | Ammonium paratungstate hydrates and ammonium paratungstate decahydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007005286A DE102007005286B4 (de) | 2007-02-02 | 2007-02-02 | Verfahren zur Herstellung von Ammoniumparawolframathydraten und Ammoniumparawolframatdekahydrat |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE102007005286A1 DE102007005286A1 (de) | 2008-08-07 |
| DE102007005286A8 DE102007005286A8 (de) | 2008-12-24 |
| DE102007005286B4 true DE102007005286B4 (de) | 2009-08-27 |
Family
ID=39400947
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102007063691A Expired - Fee Related DE102007063691B4 (de) | 2007-02-02 | 2007-02-02 | Ammoniumparawolframatdekahydrat und Verfahren zur Herstellung |
| DE102007005286A Active DE102007005286B4 (de) | 2007-02-02 | 2007-02-02 | Verfahren zur Herstellung von Ammoniumparawolframathydraten und Ammoniumparawolframatdekahydrat |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102007063691A Expired - Fee Related DE102007063691B4 (de) | 2007-02-02 | 2007-02-02 | Ammoniumparawolframatdekahydrat und Verfahren zur Herstellung |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US8216533B2 (enExample) |
| EP (1) | EP2118017B1 (enExample) |
| JP (1) | JP5424897B2 (enExample) |
| CN (1) | CN101600654B (enExample) |
| DE (2) | DE102007063691B4 (enExample) |
| ES (1) | ES2608681T3 (enExample) |
| PT (1) | PT2118017T (enExample) |
| WO (1) | WO2008092837A1 (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007005285B4 (de) * | 2007-02-02 | 2009-06-25 | H.C. Starck Gmbh | Verfahren zur Herstellung von Ammoniumheptamolybdat |
| DE102007005287B4 (de) * | 2007-02-02 | 2009-10-01 | H.C. Starck Gmbh | Verfahren zur Herstellung von Ammoniumparawolframattetrahydrat und hochreines Ammoniumparawolframattetrahydrat |
| JP4797099B2 (ja) * | 2009-10-01 | 2011-10-19 | Ｊｘ日鉱日石金属株式会社 | 高純度タングステン粉末の製造方法 |
| CN203085734U (zh) | 2010-05-19 | 2013-07-24 | 法国圣戈班玻璃厂 | 混合天线构造 |
| MX2013009440A (es) | 2011-02-16 | 2013-10-01 | Saint Gobain | Panel transparente con una capa de calentamiento electrica, y el proceso de produccion de la misma. |
| PL2689633T3 (pl) | 2011-03-22 | 2017-05-31 | Saint-Gobain Glass France | Sposób i układ odladzania przezroczystej szyby z elektrycznym urządzeniem grzejnym |
| CN110790312B (zh) * | 2019-11-13 | 2022-05-17 | 厦门钨业股份有限公司 | 利用含钨废料制备仲钨酸铵的方法 |
| CN111689520B (zh) * | 2020-06-17 | 2023-04-18 | 赣州有色冶金研究所有限公司 | 一种二段真空制备十水合仲钨酸铵的方法 |
| CN113816429B (zh) * | 2021-11-12 | 2023-04-18 | 江西钨业股份有限公司 | 仲钨酸铵的颗粒粗化方法 |
| CN117401715A (zh) * | 2023-11-01 | 2024-01-16 | 中南大学 | 一种从粗钨酸钠溶液制备偏钨酸铵与仲钨酸铵的方法 |
| WO2025168426A1 (en) | 2024-02-09 | 2025-08-14 | Saint-Gobain Sekurit France | Windshield with heating layer and optimized arrangement of an integrated temperature sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450144A (en) * | 1981-01-19 | 1984-05-22 | Amax Inc. | Ammonium hydroxide stripping of tungsten from organic solvents |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE150962C (enExample) | ||||
| US3052516A (en) * | 1959-02-10 | 1962-09-04 | Gen Mills Inc | Process for recovering tungsten values from solution |
| DE1150962B (de) | 1959-02-10 | 1963-07-04 | Gen Mills Inc | Verfahren zur Abtrennung von Wolframverbindungen aus waessrigen, wolframhaltigen Loesungen |
| US3158438A (en) * | 1962-09-19 | 1964-11-24 | Union Carbide Corp | Solvent extraction process for recovering tungsten values from contaminated aqueous solutions |
| DE1244141B (de) * | 1962-10-26 | 1967-07-13 | Blair Burwell | Verfahren zur Herstellung von hochreinem Ammoniumparawolframat |
| US4092400A (en) | 1977-04-11 | 1978-05-30 | Engelhard Minerals & Chemicals Corp. | Process for recovering high purity tungsten compositions from wolframite ores |
| US4175109A (en) * | 1978-08-03 | 1979-11-20 | Gte Sylvania Incorporated | Process for extracting tungsten from alkali metal tungstate solutions |
| US4279869A (en) * | 1979-12-13 | 1981-07-21 | Kerr-Mcgee Corporation | Process for recovering concentrated, purified tungsten values from brine |
| US4346061A (en) * | 1981-03-31 | 1982-08-24 | Union Carbide Corporation | Purification of ammonium tungstate solutions |
| US4508701A (en) * | 1983-03-31 | 1985-04-02 | Union Carbide Corporation | Extraction of tungsten from spent or scrap catalyst materials |
| US4448755A (en) * | 1983-12-01 | 1984-05-15 | Gte Products Corporation | Method for removal of tin from ammonium tungstates |
| US4613182A (en) * | 1984-08-27 | 1986-09-23 | Stone Jack C | Side panel assembly |
| US4624844A (en) * | 1985-02-04 | 1986-11-25 | Gte Products Corporation | Process for producing ammonium paratungstate |
| US4612183A (en) * | 1985-02-25 | 1986-09-16 | Gte Products Corporation | Method of producing crystalline ammonium metatungstate |
| US4623534A (en) * | 1985-03-21 | 1986-11-18 | Gte Products Corporation | Method for producing ammonium paratungstate |
| US4882131A (en) * | 1987-04-30 | 1989-11-21 | Gte Products Corporation | Process for recovering tungsten from organic solutions |
| US4963336A (en) * | 1989-09-25 | 1990-10-16 | Amax Inc. | Purification of APT |
| US5417945A (en) * | 1990-08-22 | 1995-05-23 | Gte Products Corporation | Process for recovering tungsten as an ammoniacal tungstate compound in which ammoniacal tungstate liquors are reclaimed |
| DE102007005287B4 (de) | 2007-02-02 | 2009-10-01 | H.C. Starck Gmbh | Verfahren zur Herstellung von Ammoniumparawolframattetrahydrat und hochreines Ammoniumparawolframattetrahydrat |
| DE102007005285B4 (de) | 2007-02-02 | 2009-06-25 | H.C. Starck Gmbh | Verfahren zur Herstellung von Ammoniumheptamolybdat |
-
2007
- 2007-02-02 DE DE102007063691A patent/DE102007063691B4/de not_active Expired - Fee Related
- 2007-02-02 DE DE102007005286A patent/DE102007005286B4/de active Active
-
2008
- 2008-01-29 EP EP08708312.7A patent/EP2118017B1/de active Active
- 2008-01-29 PT PT87083127T patent/PT2118017T/pt unknown
- 2008-01-29 ES ES08708312.7T patent/ES2608681T3/es active Active
- 2008-01-29 WO PCT/EP2008/050995 patent/WO2008092837A1/de not_active Ceased
- 2008-01-29 CN CN2008800039606A patent/CN101600654B/zh active Active
- 2008-01-29 JP JP2009547657A patent/JP5424897B2/ja active Active
- 2008-01-29 US US12/524,957 patent/US8216533B2/en active Active
-
2012
- 2012-05-29 US US13/482,075 patent/US8440161B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450144A (en) * | 1981-01-19 | 1984-05-22 | Amax Inc. | Ammonium hydroxide stripping of tungsten from organic solvents |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007005286A1 (de) | 2008-08-07 |
| US8440161B2 (en) | 2013-05-14 |
| PT2118017T (pt) | 2016-12-14 |
| CN101600654A (zh) | 2009-12-09 |
| US20100098619A1 (en) | 2010-04-22 |
| CN101600654B (zh) | 2013-05-29 |
| WO2008092837A1 (de) | 2008-08-07 |
| DE102007063691B4 (de) | 2011-01-13 |
| JP2010517902A (ja) | 2010-05-27 |
| US20130029153A1 (en) | 2013-01-31 |
| JP5424897B2 (ja) | 2014-02-26 |
| EP2118017B1 (de) | 2016-10-12 |
| ES2608681T3 (es) | 2017-04-12 |
| US8216533B2 (en) | 2012-07-10 |
| DE102007005286A8 (de) | 2008-12-24 |
| EP2118017A1 (de) | 2009-11-18 |
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