ES2137564T3 - Procedimiento de eliminacion del hierro en las soluciones de aluminato sodico resultantes del ataque alcalino de bauxita de monohidrato de alumina (metahidroxido de aluminio). - Google Patents
Procedimiento de eliminacion del hierro en las soluciones de aluminato sodico resultantes del ataque alcalino de bauxita de monohidrato de alumina (metahidroxido de aluminio).Info
- Publication number
- ES2137564T3 ES2137564T3 ES95943250T ES95943250T ES2137564T3 ES 2137564 T3 ES2137564 T3 ES 2137564T3 ES 95943250 T ES95943250 T ES 95943250T ES 95943250 T ES95943250 T ES 95943250T ES 2137564 T3 ES2137564 T3 ES 2137564T3
- Authority
- ES
- Spain
- Prior art keywords
- aluminum
- attack
- suspension
- degrees
- sodium aluminate
- 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
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/062—Digestion
- C01F7/0633—Digestion characterised by the use of additives
-
- 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
- C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
- C01F7/062—Digestion
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Nutrition Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PROCEDIMIENTO DE ELIMINACION DEL HIERRO EN LAS SOLUCIONES DE ALUMINATO DE SODIO SOBRESATURADAS RESULTANTES DEL ATAQUE ALCALINO SEGUN EL PROCEDIMIENTO BAYER DE BAUXITA QUE CONTIENE MONOHIDRATO DE ALUMINA, QUE TIENE SUCESIVAMENTE LAS ETAPAS DE TRITURACION ,. EVENTUALMENTE DE DESILICATACION EN PRESENCIA DE UNA FRACCION DE LICOR DESCOMPENSADA, Y DE ATAQUE A UNA TEMPERATURA SUPERIOR A 200 (GRADOS) C, COMPRENDIDA GENERALMENTE ENTRE 240 Y 270 (GRADOS) C DE DICHA BAUXITA TRITURADA Y EVENTUALMENTE DESILICATADA POR LA FRACCION RESTANTE DEL LICOR DESCOMPENSADO, PARA SOLUBILIZAR EL HIDRATO DE ALUMINATO Y FORMAR AL FINAL DEL ATAQUE UNA SUSPENSION DEL RESIDUO INSOLUBLE O LODOS ROJOS EN EL LICOR SOBRESATURADO DE ALUMINATO DE SODIO QUE, TRAS EL ENFRIAMIENTO Y DILUCION, SE DECANTA PARA SEPARAR LOS LODOS O RESIDUO INSOLUBLE DEL LICOR INSATURADO DESTINADO TRAS LA FILTRACION A SER DESCOMPUESTO EN PRESENCIA DE UN CEBO CARACTERIZADO PORQUE AL FINAL DEL ATAQUE, A LO LARGO DEL ENFRIAMIENTO DE LA SUSPENSION POR REDUCCION PROGRESIVA DE LA PRESION EN LOS REACTORES, SE INYECTA EN DICHA SUSPENSION A UNA TEMPERATURA SUPERIOR A 140 (GRADOS) C UNA PEQUEÑA CANTIDAD DE UN COMPUESTO QUE CONTIENEN CALCIO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9415727A FR2728556B1 (fr) | 1994-12-22 | 1994-12-22 | Procede d'elimination du fer dans les liqueurs d'aluminate de sodium issues de l'attaque alcaline de bauxite a monohydrate d'alumine |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2137564T3 true ES2137564T3 (es) | 1999-12-16 |
Family
ID=9470296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES95943250T Expired - Lifetime ES2137564T3 (es) | 1994-12-22 | 1995-12-20 | Procedimiento de eliminacion del hierro en las soluciones de aluminato sodico resultantes del ataque alcalino de bauxita de monohidrato de alumina (metahidroxido de aluminio). |
Country Status (10)
Country | Link |
---|---|
US (1) | US5628972A (es) |
EP (1) | EP0748294B1 (es) |
CN (1) | CN1085621C (es) |
AU (1) | AU691716B2 (es) |
DE (1) | DE69511528T2 (es) |
ES (1) | ES2137564T3 (es) |
FR (1) | FR2728556B1 (es) |
GR (1) | GR3031748T3 (es) |
HU (1) | HU225042B1 (es) |
WO (1) | WO1996019410A1 (es) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPN808296A0 (en) * | 1996-02-15 | 1996-03-07 | Queensland Alumina Limited | Bauxite treatment |
BR9707579A (pt) | 1996-12-20 | 1999-07-27 | Po Hang Iron & Steel | Método para aumentar a proporç o de carbonização |
FR2758544B1 (fr) * | 1997-01-22 | 1999-02-26 | Pechiney Aluminium | Procede ameliore de traitement de bauxites riches en monohydrate d'alumine |
CN1865141B (zh) * | 2005-05-18 | 2010-10-27 | 贵阳铝镁设计研究院 | 提高氧化铝生产中溶出液Rp的方法 |
CN1865146B (zh) * | 2005-05-18 | 2010-07-28 | 贵阳铝镁设计研究院 | 氧化铝生产中含泥原矿除砂与排粗的方法 |
FR2934852B1 (fr) * | 2008-08-06 | 2011-06-24 | Alcan Int Ltd | Perfectionnement au procede bayer de production de trihydrate d'alumine, ledit procede comprenant une etape dans laquelle la liqueur sursaturee est filtree a haute temperature avant decomposition |
ES2539680T3 (es) * | 2012-06-20 | 2015-07-03 | Pleason Ventures Ltd | Procedimiento para el procesamiento complejo de bauxita |
CN102976374B (zh) * | 2012-12-01 | 2014-11-12 | 中南大学 | 一种氧化铝生产过程中铁矿物的转化方法 |
AU2014280959B2 (en) * | 2014-12-24 | 2020-10-22 | Pleason Ventures Ltd | Process For The Complex Processing Of Bauxite |
US9441283B2 (en) | 2014-12-24 | 2016-09-13 | Pleason Ventures Ltd. | Process for complex processing of bauxite |
CN108031142A (zh) * | 2017-12-13 | 2018-05-15 | 上海合全药物研发有限公司 | 一种简化的利用湿磨来制备大量微晶种的装置及方法 |
CN109179461B (zh) * | 2018-09-19 | 2021-03-23 | 孝义市泰兴铝镁有限公司 | 一种低钠拟薄水铝石及其制备方法、装置 |
CN111410219B (zh) * | 2020-03-26 | 2022-11-11 | 重庆市九龙万博新材料科技有限公司 | 一种铝土矿的溶出工艺 |
CN113441519A (zh) * | 2021-06-28 | 2021-09-28 | 广西田东锦鑫化工有限公司 | 一种拜耳法赤泥脱碱及碱回收工艺 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3796789A (en) * | 1972-04-07 | 1974-03-12 | Aluminum Co Of America | Removal of iron from sodium aluminate liquor |
SU510974A1 (ru) * | 1974-01-04 | 1988-08-23 | Всесоюзный Научно-Исследовательский И Проектный Институт Алюминиевой,Магниевой И Электродной Промышленности | Способ получени глинозема |
IE41148B1 (en) * | 1974-05-23 | 1979-10-24 | Alcan Res & Dev | Improvement in the extraction of alumina from bauxite |
US3966874A (en) * | 1975-05-14 | 1976-06-29 | Reynolds Metals Company | Extraction of alumina from bauxite ores |
US4483830A (en) * | 1981-09-10 | 1984-11-20 | Comalco Limited | Production of alumina |
FR2546872B1 (fr) * | 1983-06-03 | 1986-01-03 | Inst Aljuminievoi | Procede de transformation d'aluminosilicates bruts en alumine, produits sodiques et ciment |
US4518571A (en) * | 1984-02-27 | 1985-05-21 | Vsesojuzny Nauchno-Issledovatelsky I Proektny Institut Aljuminievo Magnievoi I Elektrodnoi Promyshlennosti | Process for desilication of aluminate liquors in the production of alumina |
DE3501350A1 (de) * | 1985-01-17 | 1986-07-17 | Alcoa Chemie GmbH, 6700 Ludwigshafen | Verfahren zur herstellung von aluminiumhydroxid mit niedrigem gehalt an verunreinigungen, insbesondere an eisen, und hohem weissgrad |
EP0188268A3 (de) * | 1985-01-17 | 1990-01-31 | Alcoa Chemie GmbH | Verfahren zur Herstellung von Aluminiumhydroxid mit niedrigem Gehalt an Verunreinigungen, insbesondere an Eisen, und hohem Weissgrad |
-
1994
- 1994-12-22 FR FR9415727A patent/FR2728556B1/fr not_active Expired - Fee Related
-
1995
- 1995-12-13 US US08/571,470 patent/US5628972A/en not_active Expired - Lifetime
- 1995-12-20 HU HU9602275A patent/HU225042B1/hu not_active IP Right Cessation
- 1995-12-20 EP EP95943250A patent/EP0748294B1/fr not_active Expired - Lifetime
- 1995-12-20 AU AU44509/96A patent/AU691716B2/en not_active Ceased
- 1995-12-20 CN CN95191724A patent/CN1085621C/zh not_active Expired - Fee Related
- 1995-12-20 WO PCT/FR1995/001703 patent/WO1996019410A1/fr active IP Right Grant
- 1995-12-20 DE DE69511528T patent/DE69511528T2/de not_active Expired - Lifetime
- 1995-12-20 ES ES95943250T patent/ES2137564T3/es not_active Expired - Lifetime
-
1999
- 1999-11-03 GR GR990402847T patent/GR3031748T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
CN1141620A (zh) | 1997-01-29 |
EP0748294B1 (fr) | 1999-08-18 |
HU9602275D0 (en) | 1996-10-28 |
AU691716B2 (en) | 1998-05-21 |
FR2728556A1 (fr) | 1996-06-28 |
WO1996019410A1 (fr) | 1996-06-27 |
US5628972A (en) | 1997-05-13 |
EP0748294A1 (fr) | 1996-12-18 |
DE69511528D1 (de) | 1999-09-23 |
HUT76868A (en) | 1997-12-29 |
DE69511528T2 (de) | 2000-03-09 |
CN1085621C (zh) | 2002-05-29 |
FR2728556B1 (fr) | 1997-01-31 |
GR3031748T3 (en) | 2000-02-29 |
AU4450996A (en) | 1996-07-10 |
HU225042B1 (en) | 2006-05-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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