NL8600969A - Werkwijze voor het verbeteren van de precipitatie van aluminiumoxydetrihydraat bij het bayer-proces. - Google Patents
Werkwijze voor het verbeteren van de precipitatie van aluminiumoxydetrihydraat bij het bayer-proces. Download PDFInfo
- Publication number
- NL8600969A NL8600969A NL8600969A NL8600969A NL8600969A NL 8600969 A NL8600969 A NL 8600969A NL 8600969 A NL8600969 A NL 8600969A NL 8600969 A NL8600969 A NL 8600969A NL 8600969 A NL8600969 A NL 8600969A
- Authority
- NL
- Netherlands
- Prior art keywords
- crystals
- polyacrylic acid
- bayer process
- alumina trihydrate
- oxalate
- Prior art date
Links
- 238000004131 Bayer process Methods 0.000 title claims description 64
- 238000000034 method Methods 0.000 title claims description 40
- 238000001556 precipitation Methods 0.000 title claims description 25
- 230000008569 process Effects 0.000 title claims description 24
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title description 2
- 239000013078 crystal Substances 0.000 claims description 80
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 65
- 239000007788 liquid Substances 0.000 claims description 63
- 150000004684 trihydrates Chemical class 0.000 claims description 62
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 claims description 53
- 229940039790 sodium oxalate Drugs 0.000 claims description 53
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 33
- 238000002425 crystallisation Methods 0.000 claims description 33
- 230000008025 crystallization Effects 0.000 claims description 33
- 229920002125 Sokalan® Polymers 0.000 claims description 32
- 229940039748 oxalate Drugs 0.000 claims description 28
- 239000000178 monomer Substances 0.000 claims description 27
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 26
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 22
- 239000004584 polyacrylic acid Substances 0.000 claims description 18
- 238000005054 agglomeration Methods 0.000 claims description 10
- 230000002776 aggregation Effects 0.000 claims description 10
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 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 claims description 7
- 229910052708 sodium Inorganic materials 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 6
- NLVXSWCKKBEXTG-UHFFFAOYSA-M ethenesulfonate Chemical compound [O-]S(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-M 0.000 claims description 5
- 229920002554 vinyl polymer Polymers 0.000 claims description 5
- MVYVKSBVZFBBPL-UHFFFAOYSA-N 2-(prop-2-enoylamino)propane-1-sulfonic acid Chemical compound OS(=O)(=O)CC(C)NC(=O)C=C MVYVKSBVZFBBPL-UHFFFAOYSA-N 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 125000003011 styrenyl group Chemical class [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- PASCVNXEVINGGG-UHFFFAOYSA-N Mollic acid Natural products CC(CCC=C(C)C)C1CCC2(C)C3CCC4C(C)(C(O)CC(O)C45CC35CCC12C)C(=O)O PASCVNXEVINGGG-UHFFFAOYSA-N 0.000 claims 1
- 229920000642 polymer Polymers 0.000 description 38
- 230000000694 effects Effects 0.000 description 14
- 238000010899 nucleation Methods 0.000 description 9
- 229910001570 bauxite Inorganic materials 0.000 description 8
- 239000004816 latex Substances 0.000 description 8
- 229920000126 latex Polymers 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 description 6
- UOCIZHQMWNPGEN-UHFFFAOYSA-N dialuminum;oxygen(2-);trihydrate Chemical compound O.O.O.[O-2].[O-2].[O-2].[Al+3].[Al+3] UOCIZHQMWNPGEN-UHFFFAOYSA-N 0.000 description 6
- 239000008394 flocculating agent Substances 0.000 description 6
- 229940047670 sodium acrylate Drugs 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000975 co-precipitation Methods 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 235000002639 sodium chloride Nutrition 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- 229920006318 anionic polymer Polymers 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Substances [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 description 2
- -1 2-AMPS Chemical compound 0.000 description 1
- GETJHIYPEXUGHO-UHFFFAOYSA-N 3-(prop-2-enoylamino)propane-1-sulfonic acid Chemical compound OS(=O)(=O)CCCNC(=O)C=C GETJHIYPEXUGHO-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000012297 crystallization seed Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000003891 oxalate salts Chemical group 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 239000007762 w/o emulsion Substances 0.000 description 1
- 238000005406 washing 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
- C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
- C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
- C01F7/473—Removal of organic compounds, e.g. sodium oxalate
-
- 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
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
- C01F7/145—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process characterised by the use of a crystal growth modifying agent other than aluminium hydroxide seed
-
- 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
- C01P2004/51—Particles with a specific particle size distribution
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72654485A | 1985-04-24 | 1985-04-24 | |
| US72654485 | 1985-04-24 | ||
| US06/797,717 US4608237A (en) | 1985-04-24 | 1985-11-13 | Use of polymers in alumina precipitation in the Bayer process of bauxite beneficiation |
| US79771785 | 1985-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8600969A true NL8600969A (nl) | 1986-11-17 |
Family
ID=27111341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8600969A NL8600969A (nl) | 1985-04-24 | 1986-04-17 | Werkwijze voor het verbeteren van de precipitatie van aluminiumoxydetrihydraat bij het bayer-proces. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4608237A (es) |
| AU (1) | AU575765B2 (es) |
| BR (1) | BR8601795A (es) |
| CA (1) | CA1232118A (es) |
| DE (1) | DE3609662C2 (es) |
| ES (1) | ES8707871A1 (es) |
| FR (1) | FR2581054B1 (es) |
| GB (1) | GB2174380B (es) |
| IE (1) | IE58658B1 (es) |
| IT (1) | IT1209974B (es) |
| NL (1) | NL8600969A (es) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4767540A (en) * | 1987-02-11 | 1988-08-30 | American Cyanamid Company | Polymers containing hydroxamic acid groups for reduction of suspended solids in bayer process streams |
| US4737352A (en) * | 1987-04-09 | 1988-04-12 | Nalco Chemical Company | Use of surfactants in alumina precipitation in the bayer process |
| AU607014B2 (en) * | 1987-10-30 | 1991-02-21 | Alcoa Of Australia Limited | Crystallisation of sodium oxalates |
| AU613758B2 (en) * | 1988-06-03 | 1991-08-08 | Vereinigte Aluminium-Werke Aktiengesellschaft | Method for removing sodium oxalate from caustic aluminate liquors |
| GB8824176D0 (en) * | 1988-10-14 | 1988-11-23 | Allied Colloids Ltd | Recovery of alumina from bauxite |
| GB8907995D0 (en) * | 1989-04-10 | 1989-05-24 | Allied Colloids Ltd | Recovery of alumina trihydrate in the bayer process |
| US5106599A (en) * | 1990-02-06 | 1992-04-21 | Nalco Chemical Company | Alumina crystal growth additive |
| DE69125659T2 (de) * | 1990-06-25 | 1997-07-31 | Nalco Australia | Modifikation der Kristallzüchtung |
| DE4039053A1 (de) * | 1990-12-07 | 1992-06-11 | Henkel Kgaa | Polyglycerine im bayer-prozess |
| GB9201583D0 (en) * | 1992-01-24 | 1992-03-11 | Allied Colloids Ltd | Water soluble polymers |
| EP0602900B1 (en) * | 1992-12-14 | 1997-03-12 | Nalco Chemical Company | Trihydrate crystal modification in the bayer process |
| US5385586A (en) * | 1993-03-24 | 1995-01-31 | Nalco Chemical Company | Liquor oxalate stabilizers |
| CA2126914A1 (en) * | 1993-06-30 | 1994-12-31 | Gillain Mary Moody | Production of alumina |
| BR9508580A (pt) * | 1994-08-12 | 1997-12-23 | Cytec Tech Corp | Processo para estabilizar e para empilhar uma suspensão aquosa e composição possuindo características de fluxo estabilizadas |
| US5539046A (en) * | 1994-11-04 | 1996-07-23 | Cytec Technology Corp. | Blends of hydroxamated polymer emulsions with polyacrylate emulsions |
| DE10113294A1 (de) * | 2001-03-16 | 2002-09-19 | Stockhausen Chem Fab Gmbh | Bildung von Aluminiumoxidhydrat-haltigen Kristallen aus kaustischen Mutterlaugen |
| US7976820B2 (en) * | 2005-06-23 | 2011-07-12 | Nalco Company | Composition and method for improved aluminum hydroxide production |
| US7976821B2 (en) * | 2005-06-23 | 2011-07-12 | Nalco Company | Composition and method for improved aluminum hydroxide production |
| US8282689B2 (en) | 2009-07-01 | 2012-10-09 | Nalco Company | Composition and method for enhancing the production of crystal agglomerates from a precipitation liquor |
| US10427950B2 (en) | 2015-12-04 | 2019-10-01 | Ecolab Usa Inc. | Recovery of mining processing product using boronic acid-containing polymers |
| CN109292804A (zh) * | 2018-12-03 | 2019-02-01 | 广西华银铝业有限公司 | 一种氧化铝生产中草酸盐的去除方法 |
| CN112299461B (zh) * | 2020-11-08 | 2023-03-24 | 湖南诺兰蒂尔环保科技有限公司 | 一种铝酸钠溶液中草酸盐排除装置及工艺 |
| AU2022220705A1 (en) | 2021-02-12 | 2023-08-17 | Ecolab Usa Inc. | Purification of bauxite ores using boronic acid-functional compounds |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3397953A (en) * | 1965-03-04 | 1968-08-20 | Atlas Chem Ind | Flocculating agent |
| JPS4837678B1 (es) * | 1969-04-17 | 1973-11-13 | ||
| JPS4929080B1 (es) * | 1970-08-24 | 1974-08-01 | ||
| JPS53400B2 (es) * | 1972-12-06 | 1978-01-07 | ||
| DE2518431C3 (de) * | 1975-04-25 | 1982-02-04 | Giulini Chemie Gmbh, 6700 Ludwigshafen | Verfarhen zur Entfernung der schädlichen organischen Verbindungen aus der bei der Tonerdegewinnung nach dem Bayer-Verfarhen anfallenden Aluminatlauge |
| FR2317226A1 (fr) * | 1975-07-07 | 1977-02-04 | Alcan Res & Dev | Perfectionnements a la production d'alumine |
| US4263261A (en) * | 1978-12-21 | 1981-04-21 | Sumitomo Aluminium Smelting Company, Limited | Method for the removal of impurities from sodium aluminate solution |
| US4275042A (en) * | 1980-01-22 | 1981-06-23 | Alcan Research And Development Limited | Removal of oxalate from Bayer process liquor |
| AU536264B2 (en) * | 1980-07-23 | 1984-05-03 | Cytec Technology Corp. | Process for alumina recovery |
| US4478795A (en) * | 1982-10-18 | 1984-10-23 | Diamond Shamrock Chemicals Company | Aluminum trihydroxide deliquoring with anionic polymers |
| CA1285373C (fr) * | 1984-06-25 | 1991-07-02 | Jean Fabre | Purification des solutions d'aluminate de sodium du cycle bayer par elimination d'oxalate de sodium |
| US4578255A (en) * | 1984-12-27 | 1986-03-25 | Kaiser Aluminum Chemical Corporation | Purification of Bayer process liquors |
-
1985
- 1985-11-13 US US06/797,717 patent/US4608237A/en not_active Expired - Fee Related
-
1986
- 1986-03-21 DE DE3609662A patent/DE3609662C2/de not_active Expired - Fee Related
- 1986-03-24 CA CA000504858A patent/CA1232118A/en not_active Expired
- 1986-03-27 GB GB8607828A patent/GB2174380B/en not_active Expired
- 1986-04-01 FR FR8604582A patent/FR2581054B1/fr not_active Expired - Fee Related
- 1986-04-07 IE IE90086A patent/IE58658B1/en not_active IP Right Cessation
- 1986-04-16 ES ES554032A patent/ES8707871A1/es not_active Expired
- 1986-04-16 IT IT8647896A patent/IT1209974B/it active
- 1986-04-17 NL NL8600969A patent/NL8600969A/nl not_active Application Discontinuation
- 1986-04-22 AU AU56466/86A patent/AU575765B2/en not_active Ceased
- 1986-04-23 BR BR8601795A patent/BR8601795A/pt not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU5646686A (en) | 1986-10-30 |
| IE860900L (en) | 1986-10-24 |
| DE3609662A1 (de) | 1986-10-30 |
| ES8707871A1 (es) | 1987-09-01 |
| CA1232118A (en) | 1988-02-02 |
| BR8601795A (pt) | 1986-12-23 |
| FR2581054B1 (fr) | 1994-02-04 |
| FR2581054A1 (fr) | 1986-10-31 |
| IT1209974B (it) | 1989-08-30 |
| GB2174380A (en) | 1986-11-05 |
| GB2174380B (en) | 1989-06-28 |
| US4608237A (en) | 1986-08-26 |
| IT8647896A0 (it) | 1986-04-16 |
| AU575765B2 (en) | 1988-08-04 |
| IE58658B1 (en) | 1993-11-03 |
| ES554032A0 (es) | 1987-09-01 |
| DE3609662C2 (de) | 1994-12-08 |
| GB8607828D0 (en) | 1986-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NL8600969A (nl) | Werkwijze voor het verbeteren van de precipitatie van aluminiumoxydetrihydraat bij het bayer-proces. | |
| CA1275889C (en) | Surfactant compositions in alumina precipitation in the bayer process | |
| EP0392779B1 (en) | Recovery of alumina trihydrate in the Bayer process | |
| CN101443274B (zh) | 用于改进氢氧化铝生产的组合物和方法 | |
| US20110150754A1 (en) | Water-in-oil-in-water emulsions of hydroxamated polymers and methods for using the same | |
| US5106599A (en) | Alumina crystal growth additive | |
| EP0858430B1 (en) | Removing suspended solids by addition of hydroxamated polymers in the bayer process | |
| US6599489B2 (en) | Aluminum trihydrate crystals and improved method for the production thereof | |
| IE56091B1 (en) | A process for the production of aluminium trihydroxide | |
| NZ205957A (en) | The production of aluminium trihydroxide of specific median diameter of less than four microns | |
| RU2294390C2 (ru) | Способ удаления нерастворимых в воде веществ из растворов, содержащих переведенные путем химического вскрытия в водорастворимую форму металлы | |
| IE76299B1 (en) | Trihydrate clarification aid for the bayer process | |
| EP0211338A2 (en) | Process for making alumina | |
| JP3316863B2 (ja) | 赤泥の分離方法 | |
| JPH0260605B2 (es) | ||
| HU199094B (en) | Process for separating insoluble red mud and eliminating iron impurities with bayer process | |
| AU1164800A (en) | Method for purifying sodium aluminate liquors containing sodium oxalate | |
| CA2150899A1 (en) | Use of anionic flocculants and hydroxamated polymers as bayer process red mud flocculants | |
| EP0662451A1 (en) | A process for crystallising out impurities from Bayer process liquors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BA | A request for search or an international-type search has been filed | ||
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| BV | The patent application has lapsed |