ES2066952T5 - Procedimiento para la produccion de oxido de aluminio a partir de bauxita. - Google Patents
Procedimiento para la produccion de oxido de aluminio a partir de bauxita.Info
- Publication number
- ES2066952T5 ES2066952T5 ES90200664T ES90200664T ES2066952T5 ES 2066952 T5 ES2066952 T5 ES 2066952T5 ES 90200664 T ES90200664 T ES 90200664T ES 90200664 T ES90200664 T ES 90200664T ES 2066952 T5 ES2066952 T5 ES 2066952T5
- Authority
- ES
- Spain
- Prior art keywords
- decomposition
- aluminum hydroxide
- separation
- liquid
- phase
- 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
-
- 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
- C01F7/0613—Pretreatment of the minerals, e.g. grinding
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PROCESO PARA LA PRODUCCION DE HIDROXIDO DE ALUMINIO DESCOMPONIENDO LA BAUXITA CON UNA SOLUCION ALCALINA Y PRECIPITANDO EL HIDROXIDO DE ALUMINIO DE LA SOLUCION DE DESCOMPOSICION, CONSISTENTE EN: A) COMBINACION DE LA BAUXITA Y LA SOLUCION ALCALINA CON UNA CONCENTRACION CAUSTICA DE AL MENOS 180 GRAMOS POR LITRO, EXPRESADA COMO CARBONATO DE SODIO, Y DESCOMPOSICION PARCIAL DE LA BAUXITA EN EL PRODUCTO COMBINADO EN UNA PRIMERA FASE DE DESCOMPOSICION A UNA TEMPERATURA RELATIVAMENTE BAJA, B) SEPARACION DEL PRODUCTO DE REACCION OBTENIDO EN EL PASO A) EN UNA FASE LIQUIDA Y MEZCLA DE SOLIDO/LIQUIDO, C) COMBINACION DE LA FASE LIQUIDA Y MEZCLA DE SOLIDO/LIQUIDO REALIZADA EN EL PASO B) Y DESCOMPOSICION DEL PRODUCTO COMBINADO EN UNA SEGUNDA ETAPA DE DESCOMPOSICION A UNA TEMPERATURA RELATIVAMENTE ALTA, D) LIBERACION DEL CALOR DEL PRODUCTO DE REACCION OBTENIDO EN EL PASO C) PARA PRECALENTAR LA FASE LIQUIDA OBTENIDA EN EL PASO B), E) SEPARACION DEL PRODUCTO DE REACCION OBTENIDO EN EL PASO D) EN UNA SOLUCION DE ALUMINATO DE SODIO SUPERSATURADA Y MATERIAL SIN DISOLVER, F) PRECIPITACION DEL HIDROXIDO DE ALUMINIO DE LA SOLUCION DE ALUMINATO DE SODIO SUPERSATURADA OBTENIDA EN EL PASO E) Y SEPARACION DEL HIDROXIDO DE ALUMINIO DEL LICOR GASTADO, Y G) RECICLAJE DEL LICOR GASTADO OBTENIDO EN EL PASO F) AL PASO A) PARA SU USO COMO SOLUCION ALCALINA.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898906500A GB8906500D0 (en) | 1989-03-21 | 1989-03-21 | Process for the production of aluminium hydroxide from bauxite |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2066952T3 ES2066952T3 (es) | 1995-03-16 |
ES2066952T5 true ES2066952T5 (es) | 2002-04-01 |
Family
ID=10653750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90200664T Expired - Lifetime ES2066952T5 (es) | 1989-03-21 | 1990-03-20 | Procedimiento para la produccion de oxido de aluminio a partir de bauxita. |
Country Status (10)
Country | Link |
---|---|
US (1) | US5869020A (es) |
EP (1) | EP0389061B2 (es) |
AU (1) | AU626997B2 (es) |
CA (1) | CA2011860C (es) |
ES (1) | ES2066952T5 (es) |
GB (1) | GB8906500D0 (es) |
GR (1) | GR3015541T3 (es) |
HU (1) | HU209267B (es) |
IE (1) | IE67071B1 (es) |
IN (1) | IN177258B (es) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9209313D0 (en) * | 1992-04-30 | 1992-06-17 | Alcan Int Ltd | Process for the extraction of alumina |
CA2140773A1 (en) * | 1992-07-24 | 1994-02-03 | Anthony John Crisp | Process for extracting alumina from bauxite |
FR2715153B1 (fr) * | 1994-01-18 | 1996-03-01 | Pechiney Aluminium | Procédé de traitement de bauxite à trihydrate d'alumine. |
AUPM761194A0 (en) * | 1994-08-23 | 1994-09-15 | Comalco Aluminium Limited | Improved process for the extraction of alumina from bauxite |
ES2317703T3 (es) * | 1998-09-25 | 2009-04-16 | Bhp Billiton Worsley Alumina Pty Ltd | Proceso para la caustificacion de lejias bayer. |
JP2000211919A (ja) * | 1998-11-16 | 2000-08-02 | Sumitomo Chem Co Ltd | アルミナ含有鉱石からの水酸化アルミニウムの製造方法 |
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 |
FR2875495B1 (fr) * | 2004-09-21 | 2006-10-27 | Aluminium Pechiney Soc Par Act | Perfectionnement au procede bayer de fabrication de trihydrate d'alumine, ledit perfectionnement portant sur la separation de la liqueur d'aluminate et des residus insolubles |
CN101746795B (zh) * | 2008-12-02 | 2012-04-25 | 中国科学院过程工程研究所 | 一种从铝土矿生产氧化铝的方法 |
RU2611871C2 (ru) * | 2015-05-20 | 2017-03-01 | Федеральное государственное автономное образовательное учреждение высшего образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Способ обогащения пиритизированных высококремнистых маложелезистых бокситов |
WO2018148308A1 (en) * | 2017-02-07 | 2018-08-16 | Kemira Oyj | Selective polysaccharide flocculants for bauxite ore beneficiation |
CN106987280A (zh) * | 2017-04-24 | 2017-07-28 | 北京神源环保有限公司 | 一种流化床垃圾热解的系统及方法 |
ES2953483T3 (es) * | 2018-11-26 | 2023-11-13 | Alunorte Alumina Do Norte Do Brasil S A | Proceso y sistema para producir alúmina a partir de mineral de bauxita |
CN111732116A (zh) * | 2020-08-14 | 2020-10-02 | 中铝山东工程技术有限公司 | 一种氢氧化铝重溶系统 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2701751A (en) * | 1949-08-11 | 1955-02-08 | Kaiser Aluminium Chem Corp | Process for production of alumina |
US2701752A (en) * | 1951-12-19 | 1955-02-08 | Kaiser Aluminium Chem Corp | Process for the production of alumina |
US3413087A (en) * | 1964-03-13 | 1968-11-26 | Reynolds Metals Co | Method for extracting alumina from its ores |
US3481705A (en) * | 1964-08-31 | 1969-12-02 | Kaiser Aluminium Chem Corp | Predigestion of low-silica bauxite |
FR1506516A (fr) * | 1966-11-08 | 1967-12-22 | Reynolds Metals Co | Perfectionnements aux procédés pour l'extraction d'alumine à partir de minerais alumineux |
FR1523302A (fr) * | 1967-03-20 | 1968-05-03 | Pechiney Prod Chimiques Sa | Procédé perfectionné d'attaque continue de la bauxite par une solution de soude caustique et d'aluminate de sodium |
US3681013A (en) * | 1970-02-02 | 1972-08-01 | Aluminum Co Of America | Extraction of alumina from bauxite |
AU474596B2 (en) * | 1972-04-03 | 1974-07-25 | Kaiser Aluminum & Chemical Corporation | Improvements in the bayer process production of alumina |
US3868442A (en) * | 1972-09-05 | 1975-02-25 | Aluminum Co Of America | Alumina extraction |
JPS5086499A (es) * | 1973-12-06 | 1975-07-11 | ||
JPS5319199A (en) * | 1976-08-06 | 1978-02-22 | Sumitomo Chem Co Ltd | Extracting method for alumina from alumina-containing ore |
US4324769A (en) * | 1979-10-01 | 1982-04-13 | Alumina Development Corporation | Extraction and production of alumina containing less than 0.03 percent iron oxide |
JPS57145029A (en) * | 1981-02-27 | 1982-09-07 | Sumitomo Alum Smelt Co Ltd | Extracting method of alumina from mixed type bauxite |
US4446117A (en) * | 1983-04-04 | 1984-05-01 | Alumina Development Corporation | Double digestion system to reduce formation of ferrous iron |
FR2582640B1 (fr) * | 1985-05-29 | 1987-07-31 | Pechiney Aluminium | Procede de production continue d'alumine a partir de bauxites a monohydrates, selon le procede bayer |
US4661328A (en) * | 1985-06-19 | 1987-04-28 | Aluminum Company Of America | Alumina from high silica bauxite |
US4614641A (en) * | 1985-06-19 | 1986-09-30 | Aluminum Company Of America | Parallel purification of alumina with physical pretreatment |
-
1989
- 1989-03-21 GB GB898906500A patent/GB8906500D0/en active Pending
-
1990
- 1990-03-06 IN IN212DE1990 patent/IN177258B/en unknown
- 1990-03-09 CA CA002011860A patent/CA2011860C/en not_active Expired - Fee Related
- 1990-03-15 AU AU51414/90A patent/AU626997B2/en not_active Expired
- 1990-03-20 HU HU901613A patent/HU209267B/hu unknown
- 1990-03-20 EP EP90200664A patent/EP0389061B2/en not_active Expired - Lifetime
- 1990-03-20 ES ES90200664T patent/ES2066952T5/es not_active Expired - Lifetime
- 1990-03-20 IE IE102090A patent/IE67071B1/en not_active IP Right Cessation
-
1992
- 1992-04-22 US US07/873,715 patent/US5869020A/en not_active Expired - Fee Related
-
1995
- 1995-03-23 GR GR950400675T patent/GR3015541T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
EP0389061B1 (en) | 1995-01-11 |
HU209267B (en) | 1994-04-28 |
EP0389061A2 (en) | 1990-09-26 |
IE67071B1 (en) | 1996-02-21 |
CA2011860A1 (en) | 1990-09-21 |
HU901613D0 (en) | 1990-06-28 |
EP0389061A3 (en) | 1992-03-18 |
AU5141490A (en) | 1990-09-27 |
ES2066952T3 (es) | 1995-03-16 |
IN177258B (es) | 1996-12-14 |
IE901020L (en) | 1990-09-21 |
EP0389061B2 (en) | 2002-01-02 |
HUT54320A (en) | 1991-02-28 |
AU626997B2 (en) | 1992-08-13 |
GR3015541T3 (en) | 1995-06-30 |
GB8906500D0 (en) | 1989-05-04 |
US5869020A (en) | 1999-02-09 |
CA2011860C (en) | 2000-02-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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