ES2161551T3 - Produccion de trihidrato de alumina con control separado del tenor en sodio y de la granulometria. - Google Patents
Produccion de trihidrato de alumina con control separado del tenor en sodio y de la granulometria.Info
- Publication number
- ES2161551T3 ES2161551T3 ES98955669T ES98955669T ES2161551T3 ES 2161551 T3 ES2161551 T3 ES 2161551T3 ES 98955669 T ES98955669 T ES 98955669T ES 98955669 T ES98955669 T ES 98955669T ES 2161551 T3 ES2161551 T3 ES 2161551T3
- Authority
- ES
- Spain
- Prior art keywords
- sodium
- tenor
- granulometry
- production
- separate control
- 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
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
Abstract
Procedimiento de BAYER de fabricación de trihidrato de alúmina (8; 8'') por precipitación en presencia de cebos reciclados al principio de la descomposición de un licor sobresaturado (1; 1'') de aluminato sódico caracterizado porque al principio de la descomposición se toma una alícuota (11, 21) de la suspensión de aluminato, porque se aplica a la susodicha alícuota una acción mecánica intensa y porque se reintroduce dicha alícuota al principio de la descomposición.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9714590A FR2771081B1 (fr) | 1997-11-17 | 1997-11-17 | Production de trihydrate d'alumine avec controle separe de la teneur en sodium et de la granulometrie |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2161551T3 true ES2161551T3 (es) | 2001-12-01 |
Family
ID=9513606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES98955669T Expired - Lifetime ES2161551T3 (es) | 1997-11-17 | 1998-11-16 | Produccion de trihidrato de alumina con control separado del tenor en sodio y de la granulometria. |
Country Status (12)
Country | Link |
---|---|
US (1) | US6391277B1 (es) |
EP (1) | EP1032540B1 (es) |
AU (1) | AU743960B2 (es) |
BR (1) | BR9814874A (es) |
CA (1) | CA2310128C (es) |
DE (1) | DE69801515T2 (es) |
ES (1) | ES2161551T3 (es) |
FR (1) | FR2771081B1 (es) |
HU (1) | HU226660B1 (es) |
OA (1) | OA11382A (es) |
UA (1) | UA60350C2 (es) |
WO (1) | WO1999025653A1 (es) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2846319B1 (fr) * | 2002-10-25 | 2004-12-10 | Pechiney Aluminium | Procede d'attaque de la bauxite ameliorant la filtrabilite des boues en sortie d'attaque |
CA2542516C (en) * | 2003-10-22 | 2012-09-04 | Comalco Aluminium Limited | Destruction of organics in bayer process streams |
GB0413511D0 (en) * | 2004-06-17 | 2004-07-21 | Accentus Plc | Precipitation of gibbsite from a bayer liquor |
GB0415227D0 (en) * | 2004-07-07 | 2004-08-11 | Accentus Plc | Precipitation of silica in a Bayer process |
CN100398447C (zh) * | 2005-01-21 | 2008-07-02 | 中南大学 | 一种从高硅铝土矿中提取氧化铝的方法 |
CN100406386C (zh) * | 2005-06-01 | 2008-07-30 | 贵阳铝镁设计研究院 | 控制氢氧化铝析出速度的方法及装置 |
CN100427396C (zh) * | 2006-09-05 | 2008-10-22 | 中国铝业股份有限公司 | 一种拜耳法种分生产氧化铝的方法 |
CN101607724B (zh) * | 2008-06-19 | 2010-12-15 | 北京化工大学 | 一种利用氢氧化钠溶出铝土矿中氧化铝的方法 |
CN108585007B (zh) * | 2018-01-30 | 2019-11-08 | 中南大学 | 一种协同调控强化铝酸钠溶液晶种分解的方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE721178C (de) * | 1937-12-22 | 1942-05-28 | Hans Tiedemann Dr Ing | Ausruehren von Tonerdehydrat |
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 | |
DE2531646A1 (de) * | 1975-07-15 | 1977-02-03 | Ekato Werke | Verfahren und vorrichtung zur herstellung von tonerde |
FR2732332B1 (fr) * | 1995-03-31 | 1997-05-09 | Pechiney Aluminium | Procede de traitement de bauxite a trihydrate d'alumine a basse teneur en silice reactive |
US6217622B1 (en) * | 1998-10-22 | 2001-04-17 | Alcan International Limited | Method and apparatus for precipitating and classifying solids in high concentrations |
-
1997
- 1997-11-17 FR FR9714590A patent/FR2771081B1/fr not_active Expired - Fee Related
-
1998
- 1998-11-16 WO PCT/FR1998/002443 patent/WO1999025653A1/fr active IP Right Grant
- 1998-11-16 ES ES98955669T patent/ES2161551T3/es not_active Expired - Lifetime
- 1998-11-16 AU AU12430/99A patent/AU743960B2/en not_active Ceased
- 1998-11-16 BR BR9814874-5A patent/BR9814874A/pt not_active IP Right Cessation
- 1998-11-16 HU HU0102746A patent/HU226660B1/hu not_active IP Right Cessation
- 1998-11-16 US US09/529,402 patent/US6391277B1/en not_active Expired - Fee Related
- 1998-11-16 DE DE69801515T patent/DE69801515T2/de not_active Expired - Lifetime
- 1998-11-16 EP EP98955669A patent/EP1032540B1/fr not_active Expired - Lifetime
- 1998-11-16 CA CA002310128A patent/CA2310128C/fr not_active Expired - Fee Related
- 1998-11-16 UA UA2000063536A patent/UA60350C2/uk unknown
-
2000
- 2000-05-16 OA OA1200000143A patent/OA11382A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
AU1243099A (en) | 1999-06-07 |
EP1032540B1 (fr) | 2001-08-29 |
HU226660B1 (en) | 2009-06-29 |
AU743960B2 (en) | 2002-02-07 |
CA2310128A1 (fr) | 1999-05-27 |
FR2771081A1 (fr) | 1999-05-21 |
HUP0102746A3 (en) | 2003-03-28 |
OA11382A (fr) | 2004-01-27 |
WO1999025653A1 (fr) | 1999-05-27 |
DE69801515D1 (de) | 2001-10-04 |
DE69801515T2 (de) | 2002-05-08 |
UA60350C2 (uk) | 2003-10-15 |
US6391277B1 (en) | 2002-05-21 |
HUP0102746A2 (hu) | 2001-11-28 |
EP1032540A1 (fr) | 2000-09-06 |
CA2310128C (fr) | 2009-01-27 |
FR2771081B1 (fr) | 1999-12-17 |
BR9814874A (pt) | 2000-10-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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