CA2108785C - Methode de controle de la concentration d'oxalate de sodium dans des solutions d'aluminate de sodium - Google Patents
Methode de controle de la concentration d'oxalate de sodium dans des solutions d'aluminate de sodiumInfo
- Publication number
- CA2108785C CA2108785C CA002108785A CA2108785A CA2108785C CA 2108785 C CA2108785 C CA 2108785C CA 002108785 A CA002108785 A CA 002108785A CA 2108785 A CA2108785 A CA 2108785A CA 2108785 C CA2108785 C CA 2108785C
- Authority
- CA
- Canada
- Prior art keywords
- sodium
- oxalate
- sodium oxalate
- liquor
- concentration
- 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 - Lifetime
Links
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 title claims abstract description 108
- 229940039790 sodium oxalate Drugs 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 45
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910001388 sodium aluminate Inorganic materials 0.000 title claims abstract description 30
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229940039748 oxalate Drugs 0.000 claims abstract description 51
- 239000002245 particle Substances 0.000 claims abstract description 25
- 238000004131 Bayer process Methods 0.000 claims abstract description 24
- 239000002244 precipitate Substances 0.000 claims abstract description 18
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 12
- 239000000725 suspension Substances 0.000 claims abstract description 9
- 239000007864 aqueous solution Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims abstract description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 28
- 238000005406 washing Methods 0.000 claims description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 17
- 239000003518 caustics Substances 0.000 claims description 15
- 239000000706 filtrate Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 10
- 239000012065 filter cake Substances 0.000 claims description 9
- 230000029087 digestion Effects 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims description 3
- 238000011109 contamination Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 45
- 239000013078 crystal Substances 0.000 description 24
- 238000001556 precipitation Methods 0.000 description 22
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 239000011734 sodium Substances 0.000 description 7
- 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 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 235000017550 sodium carbonate Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 150000004645 aluminates Chemical class 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 244000007645 Citrus mitis Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RREGISFBPQOLTM-UHFFFAOYSA-N alumane;trihydrate Chemical compound O.O.O.[AlH3] RREGISFBPQOLTM-UHFFFAOYSA-N 0.000 description 1
- -1 aluminate hydroxide Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Méthode pour éliminer l'oxalate de sodium dans une liqueur d'aluminate de sodium produite par digestion de bauxite utilisant le procédé Bayer. La nouvelle méthode d'élimination de l'oxalate de sodium comprend les étapes suivantes : a) production en continu de nouveaux germes particulaires réactifs d'oxalate de sodium, par mélange d'une solution aqueuse d'oxalate de sodium et d'une fraction de la liqueur d'aluminate de sodium du procédé Bayer, de façon à obtenir une concentration d'oxalate de sodium dans une plage où il y a formation de particules sphéroïdales d'oxalate de sodium; b) addition d'une suspension de ces particules comme germes à une seconde fraction de la liqueur d'aluminate de sodium du procédé Bayer, ce qui fait précipiter le reste de l'oxalate de sodium dissous; c) séparation du précipité d'oxalate de sodium, ce qui laisse une liqueur moins contaminée par cet oxalate. Les particules sphéroïdales sont formées en maintenant la concentration d'oxalate de sodium à une concentration supérieure d'environ 5 % à 75 % à la concentration d'autonucléation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69525691A | 1991-05-03 | 1991-05-03 | |
| US695,256 | 1991-05-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2108785A1 CA2108785A1 (fr) | 1992-11-04 |
| CA2108785C true CA2108785C (fr) | 1998-06-16 |
Family
ID=24792272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002108785A Expired - Lifetime CA2108785C (fr) | 1991-05-03 | 1992-05-01 | Methode de controle de la concentration d'oxalate de sodium dans des solutions d'aluminate de sodium |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU650747B2 (fr) |
| BR (1) | BR9205965A (fr) |
| CA (1) | CA2108785C (fr) |
| IE (1) | IE68425B1 (fr) |
| WO (1) | WO1992019537A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69419712T2 (de) * | 1994-01-07 | 2000-01-13 | Alcan International Ltd., Montreal | Verfahren zur Entfernung durch Kristallisation von Verunreinigungen aus Bayerprozesslaugen |
| FR2794449B1 (fr) * | 1999-06-04 | 2001-10-19 | Pechiney Aluminium | Procede d'epuration des liqueurs d'aluminate de sodium contenant de l'oxalate de sodium permettant de valoriser les residus |
| CN112047366A (zh) * | 2020-08-11 | 2020-12-08 | 中国铝业股份有限公司 | 一种以分解槽结疤脱除氧化铝分解母液中草酸钠的方法 |
| CN112939040A (zh) * | 2021-03-31 | 2021-06-11 | 中铝集团山西交口兴华科技股份有限公司 | 一种氧化铝及精细氧化铝生产流程中去除草酸钠的方法 |
| CN114408956B (zh) * | 2022-01-07 | 2023-08-22 | 中铝山东有限公司 | 一种高有机物铝酸钠溶液综合除碳方法和系统 |
| CN116282102B (zh) * | 2022-11-29 | 2024-11-08 | 山西华兴铝业有限公司 | 一种有机物脱除流程中添加种子的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2317226A1 (fr) * | 1975-07-07 | 1977-02-04 | Alcan Res & Dev | Perfectionnements a la production d'alumine |
| JPS5456098A (en) * | 1977-10-12 | 1979-05-04 | Nippon Light Metal Co | Method of producing crude aluminum hydrate particles |
| US4263261A (en) * | 1978-12-21 | 1981-04-21 | Sumitomo Aluminium Smelting Company, Limited | Method for the removal of impurities from sodium aluminate solution |
| GB2211832A (en) * | 1987-10-30 | 1989-07-12 | Commw Scient Ind Res Org | Bayer process liquor purification |
| AU613758B2 (en) * | 1988-06-03 | 1991-08-08 | Vereinigte Aluminium-Werke Aktiengesellschaft | Method for removing sodium oxalate from caustic aluminate liquors |
-
1992
- 1992-05-01 CA CA002108785A patent/CA2108785C/fr not_active Expired - Lifetime
- 1992-05-01 BR BR9205965A patent/BR9205965A/pt not_active IP Right Cessation
- 1992-05-01 AU AU16642/92A patent/AU650747B2/en not_active Expired
- 1992-05-01 WO PCT/CA1992/000188 patent/WO1992019537A1/fr not_active Ceased
- 1992-07-01 IE IE921423A patent/IE68425B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU650747B2 (en) | 1994-06-30 |
| AU1664292A (en) | 1992-12-21 |
| WO1992019537A1 (fr) | 1992-11-12 |
| IE68425B1 (en) | 1996-06-12 |
| IE921423A1 (en) | 1992-11-04 |
| BR9205965A (pt) | 1995-03-01 |
| CA2108785A1 (fr) | 1992-11-04 |
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| JPS603006B2 (ja) | バイヤ−工程から有機物を除去する方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |