CA2861935C - Process for producing aluminum hydroxide by seeded precipitation of supersaturated sodium aluminate solution - Google Patents
Process for producing aluminum hydroxide by seeded precipitation of supersaturated sodium aluminate solution Download PDFInfo
- Publication number
- CA2861935C CA2861935C CA2861935A CA2861935A CA2861935C CA 2861935 C CA2861935 C CA 2861935C CA 2861935 A CA2861935 A CA 2861935A CA 2861935 A CA2861935 A CA 2861935A CA 2861935 C CA2861935 C CA 2861935C
- Authority
- CA
- Canada
- Prior art keywords
- precipitation tank
- agitation
- seeded precipitation
- seeded
- aluminum hydroxide
- 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.)
- Active
Links
- 238000001556 precipitation Methods 0.000 title claims abstract description 177
- 238000000034 method Methods 0.000 title claims abstract description 54
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 title claims abstract description 44
- 230000008569 process Effects 0.000 title claims abstract description 40
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical class [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000013019 agitation Methods 0.000 claims abstract description 105
- 239000002245 particle Substances 0.000 claims abstract description 32
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 22
- 230000008021 deposition Effects 0.000 claims abstract description 12
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 239000013078 crystal Substances 0.000 claims description 24
- 238000007664 blowing Methods 0.000 claims description 4
- 238000005185 salting out Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 17
- 238000002156 mixing Methods 0.000 description 37
- 238000004519 manufacturing process Methods 0.000 description 26
- 239000002002 slurry Substances 0.000 description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 238000002425 crystallisation Methods 0.000 description 10
- 230000008025 crystallization Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004131 Bayer process Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000010523 cascade reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- -1 aluminate anions Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 230000005514 two-phase flow Effects 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
- C01F7/04—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210019003.0A CN102583474B (zh) | 2012-01-20 | 2012-01-20 | 过饱和铝酸钠溶液晶种分解生产氢氧化铝的工艺方法 |
| CN201210019003.0 | 2012-01-20 | ||
| PCT/CN2012/074190 WO2013107120A1 (zh) | 2012-01-20 | 2012-04-17 | 过饱和铝酸钠溶液晶种分解生产氢氧化铝的方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2861935A1 CA2861935A1 (en) | 2013-07-25 |
| CA2861935C true CA2861935C (en) | 2016-12-06 |
Family
ID=46472837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2861935A Active CA2861935C (en) | 2012-01-20 | 2012-04-17 | Process for producing aluminum hydroxide by seeded precipitation of supersaturated sodium aluminate solution |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102583474B (zh) |
| AU (1) | AU2012365963B2 (zh) |
| CA (1) | CA2861935C (zh) |
| WO (1) | WO2013107120A1 (zh) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992366A (zh) * | 2012-11-19 | 2013-03-27 | 贵州省新材料研究开发基地 | 氢氧化铝微粉制备工艺方法 |
| CN103736317A (zh) * | 2013-12-14 | 2014-04-23 | 中国铝业股份有限公司 | 一种种分过滤机供料方法 |
| CN110127737B (zh) * | 2019-07-01 | 2023-09-19 | 济源职业技术学院 | 拜耳法氧化铝生产中防止种分周期性细化的装置 |
| CN112960682B (zh) * | 2021-03-03 | 2022-10-11 | 杭州智华杰科技有限公司 | 一种提高层析氧化铝再生次数的方法 |
| CN114184152B (zh) * | 2021-12-03 | 2024-05-14 | 中国铝业股份有限公司 | 晶种分解槽的积料厚度测量方法、存储介质及电子设备 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653858A (en) * | 1951-09-22 | 1953-09-29 | Aluminum Co Of America | Precipitation of aluminum hydroxide |
| NO135059C (zh) * | 1975-04-16 | 1977-02-02 | Norsk Hydro As | |
| US6217622B1 (en) * | 1998-10-22 | 2001-04-17 | Alcan International Limited | Method and apparatus for precipitating and classifying solids in high concentrations |
| AU2002301811B2 (en) * | 2001-11-07 | 2007-08-23 | Sumitomo Chemical Company, Limited | Aluminum hydroxide aggregated particles, process for producing the same, vessel used therefor, and process for producing aluminum hydroxide powder |
| CN201458765U (zh) * | 2009-08-18 | 2010-05-12 | 胡大乔 | 铝酸钠溶液柱状流平底分解槽 |
| CN101628726A (zh) * | 2009-08-18 | 2010-01-20 | 胡大乔 | 铝酸钠溶液柱状流平底分解槽 |
| CN101955213B (zh) * | 2010-09-26 | 2013-01-02 | 胡大乔 | 铝酸钠溶液平推流晶种分解槽 |
| CN101955212B (zh) * | 2010-09-26 | 2013-03-27 | 苏向东 | 铝酸钠溶液平推流分解反应装置 |
| CN201825743U (zh) * | 2010-09-26 | 2011-05-11 | 胡大乔 | 铝酸钠溶液平推流晶种分解槽 |
| CN201825742U (zh) * | 2010-09-26 | 2011-05-11 | 苏向东 | 铝酸钠溶液平推流分解反应装置 |
| CN202011755U (zh) * | 2011-01-18 | 2011-10-19 | 贵州科学院 | 微搅动多锥底组合平推流氢氧化铝种分槽 |
| CN202175569U (zh) * | 2011-05-10 | 2012-03-28 | 贵州科学院 | 氢氧化铝大型平底晶种分解槽 |
-
2012
- 2012-01-20 CN CN201210019003.0A patent/CN102583474B/zh active Active
- 2012-04-17 CA CA2861935A patent/CA2861935C/en active Active
- 2012-04-17 AU AU2012365963A patent/AU2012365963B2/en active Active
- 2012-04-17 WO PCT/CN2012/074190 patent/WO2013107120A1/zh active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| AU2012365963A1 (en) | 2014-09-11 |
| CN102583474A (zh) | 2012-07-18 |
| CA2861935A1 (en) | 2013-07-25 |
| CN102583474B (zh) | 2014-08-27 |
| WO2013107120A1 (zh) | 2013-07-25 |
| AU2012365963B2 (en) | 2015-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20140718 |