ES2185404T3 - Metodo y aparato para precipitar y clasificar solidos en altas concentraciones. - Google Patents
Metodo y aparato para precipitar y clasificar solidos en altas concentraciones.Info
- Publication number
- ES2185404T3 ES2185404T3 ES99952175T ES99952175T ES2185404T3 ES 2185404 T3 ES2185404 T3 ES 2185404T3 ES 99952175 T ES99952175 T ES 99952175T ES 99952175 T ES99952175 T ES 99952175T ES 2185404 T3 ES2185404 T3 ES 2185404T3
- Authority
- ES
- Spain
- Prior art keywords
- aqueous suspension
- dense aqueous
- vessel
- zone
- particles
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 239000007787 solid Substances 0.000 title 1
- 239000007900 aqueous suspension Substances 0.000 abstract 5
- 230000000284 resting effect Effects 0.000 abstract 3
- 239000010419 fine particle Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- 238000001556 precipitation Methods 0.000 abstract 2
- 239000011362 coarse particle Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
Un método para formar y clasificar parcialmente un precipitado que contenga partículas grandes, partículas gruesas y partículas finas, a partir de una suspensión acuosa densa madre de precipitación sobresaturada, que comprende separar la suspensión acuosa densa madre de precipitación en una pluralidad de corrientes separadas, introducir simultáneamente y por separado cada corriente como una alimentación de suspensión acuosa densa en un vaso en el que hay una zona inferior agitada y una zona superior de reposo para formar dicho precipitado, retirar continuamente suspensión acuosa densa producto como un flujo de desagüe por debajo desde la zona inferior agitada de cada vaso, y retirar continuamente licor gastado como un flujo de rebose por encima desde dicha zona superior de reposo, en que dicha alimentación de suspensión acuosa densa, dicho flujo de desagüe por debajo y dicho flujo de rebose por encima son mantenidos de tal modo que dichas partículas grandes y las gruesas se acumulan como una suspensión acuosa densa en la zona inferior agitada de cada vaso, y solamente salen dichas partículas finas de dicho vaso con dicho flujo de rebose por encima después de migrar a través de dicha zona de reposo.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/178,022 US6217622B1 (en) | 1998-10-22 | 1998-10-22 | Method and apparatus for precipitating and classifying solids in high concentrations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2185404T3 true ES2185404T3 (es) | 2003-04-16 |
Family
ID=22650853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES99952175T Expired - Lifetime ES2185404T3 (es) | 1998-10-22 | 1999-10-20 | Metodo y aparato para precipitar y clasificar solidos en altas concentraciones. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6217622B1 (es) |
| EP (1) | EP1124759B1 (es) |
| AU (1) | AU760667B2 (es) |
| BR (1) | BR9914732B1 (es) |
| ES (1) | ES2185404T3 (es) |
| MY (1) | MY130798A (es) |
| WO (1) | WO2000024675A1 (es) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2771081B1 (fr) * | 1997-11-17 | 1999-12-17 | Pechiney Aluminium | Production de trihydrate d'alumine avec controle separe de la teneur en sodium et de la granulometrie |
| FR2782710B1 (fr) * | 1998-09-02 | 2000-10-06 | Pechiney Aluminium | Procede de controle granulometrique dans une chaine de decomposition du circuit bayer, incluant une phase d'agglomeration |
| 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 |
| RU2255044C1 (ru) * | 2004-03-09 | 2005-06-27 | Открытое акционерное общество "ВСЕРОССИЙСКИЙ АЛЮМИНИЕВО- МАГНИЕВЫЙ ИНСТИТУТ" | Способ классификации гидроксида алюминия |
| GB0413511D0 (en) * | 2004-06-17 | 2004-07-21 | Accentus Plc | Precipitation of gibbsite from a bayer liquor |
| 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 |
| CN100383046C (zh) * | 2005-07-18 | 2008-04-23 | 贵阳铝镁设计研究院 | 提高原矿浆固含的工艺方法 |
| RU2305101C2 (ru) * | 2005-10-21 | 2007-08-27 | Открытое акционерное общество "РУСАЛ Всероссийский Алюминиево-магниевый Институт"(ОАО "РУСАЛ ВАМИ") | Способ разложения алюминатных растворов карбонизацией |
| RU2424980C2 (ru) * | 2009-02-25 | 2011-07-27 | Открытое акционерное общество "РУСАЛ Всероссийский Алюминиево-магниевый Институт" | Способ карбонизации алюминатных растворов |
| RU2450066C1 (ru) * | 2011-03-11 | 2012-05-10 | Виктор Григорьевич Оголь | Способ переработки нефелиновых руд для получения глинозема и содопродуктов |
| CN102583474B (zh) * | 2012-01-20 | 2014-08-27 | 贵州省新材料研究开发基地 | 过饱和铝酸钠溶液晶种分解生产氢氧化铝的工艺方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653858A (en) | 1951-09-22 | 1953-09-29 | Aluminum Co Of America | Precipitation of aluminum hydroxide |
| US3632310A (en) * | 1967-10-23 | 1972-01-04 | Arthur F Johnson | Process for manufacturing alumina |
| US3649184A (en) | 1969-05-29 | 1972-03-14 | Reynolds Metals Co | Precipitation of alumina hydrate |
| NO135059C (es) | 1975-04-16 | 1977-02-02 | Norsk Hydro As | |
| US4305913A (en) * | 1980-08-06 | 1981-12-15 | Kaiser Aluminum & Chemical Corporation | Alumina hydrate production from Bayer liquor by seeding |
| EP0102403B1 (de) * | 1982-09-02 | 1986-03-05 | Alcoa Chemie GmbH | Verbessertes Verfahren zur Gewinnung von Tonerde |
| US4511542A (en) * | 1984-05-24 | 1985-04-16 | Kaiser Aluminum & Chemical Corporation | Bayer process production of alumina hydrate |
| FR2598701B1 (fr) | 1986-05-15 | 1988-08-05 | Pechiney Aluminium | Procede et dispositif de decomposition de liqueur d'aluminate de sodium pour la production d'alumine |
| US5163973A (en) * | 1990-02-14 | 1992-11-17 | Alcan Internatinal Limited | Process for producing low soda alumina |
| AU633209B2 (en) | 1990-07-20 | 1993-01-21 | Alcan International Limited | Improved precipitation vessel |
| BR9305905A (pt) * | 1992-02-19 | 1997-10-21 | Comalco Alu | Aperfeiçoamentos em plantas de alumina |
-
1998
- 1998-10-22 US US09/178,022 patent/US6217622B1/en not_active Expired - Fee Related
-
1999
- 1999-10-20 AU AU64547/99A patent/AU760667B2/en not_active Ceased
- 1999-10-20 EP EP99952175A patent/EP1124759B1/en not_active Expired - Lifetime
- 1999-10-20 BR BRPI9914732-7A patent/BR9914732B1/pt not_active IP Right Cessation
- 1999-10-20 WO PCT/CA1999/000976 patent/WO2000024675A1/en not_active Ceased
- 1999-10-20 ES ES99952175T patent/ES2185404T3/es not_active Expired - Lifetime
- 1999-10-21 MY MYPI99004549A patent/MY130798A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR9914732B1 (pt) | 2008-11-18 |
| MY130798A (en) | 2007-07-31 |
| AU760667B2 (en) | 2003-05-22 |
| BR9914732A (pt) | 2001-11-06 |
| WO2000024675A1 (en) | 2000-05-04 |
| US6217622B1 (en) | 2001-04-17 |
| EP1124759B1 (en) | 2002-12-18 |
| AU6454799A (en) | 2000-05-15 |
| EP1124759A1 (en) | 2001-08-22 |
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