ES2066952T3 - 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
ES2066952T3
ES2066952T3 ES90200664T ES90200664T ES2066952T3 ES 2066952 T3 ES2066952 T3 ES 2066952T3 ES 90200664 T ES90200664 T ES 90200664T ES 90200664 T ES90200664 T ES 90200664T ES 2066952 T3 ES2066952 T3 ES 2066952T3
Authority
ES
Spain
Prior art keywords
decomposition
aluminum hydroxide
bauxite
liquid
separation
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
Application number
ES90200664T
Other languages
English (en)
Other versions
ES2066952T5 (es
Inventor
Albert Rijkeboer
Hond Roelof Den
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10653750&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2066952(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of ES2066952T3 publication Critical patent/ES2066952T3/es
Application granted granted Critical
Publication of ES2066952T5 publication Critical patent/ES2066952T5/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
ES90200664T 1989-03-21 1990-03-20 Procedimiento para la produccion de oxido de aluminio a partir de bauxita. Expired - Lifetime ES2066952T5 (es)

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 true ES2066952T3 (es) 1995-03-16
ES2066952T5 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)

* Cited by examiner, † Cited by third party
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
HUP0103434A3 (en) * 1998-09-25 2004-10-28 Worsley Alumina Pty Ltd Collie Improved bayer causticisation
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
BR112019016383A2 (pt) * 2017-02-07 2020-04-07 Kemira Oyj floculantes seletivos a base de polissacarídeo para beneficiamento de minério de bauxita
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
EP3656881B1 (en) * 2018-11-26 2023-06-14 Alunorte -Alumina do Norte do Brasil S.A. Process and system for producing alumina from bauxite ore
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)

* Cited by examiner, † Cited by third party
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
US4614641A (en) * 1985-06-19 1986-09-30 Aluminum Company Of America Parallel purification of alumina with physical pretreatment
US4661328A (en) * 1985-06-19 1987-04-28 Aluminum Company Of America Alumina from high silica bauxite

Also Published As

Publication number Publication date
US5869020A (en) 1999-02-09
EP0389061B1 (en) 1995-01-11
GR3015541T3 (en) 1995-06-30
EP0389061A2 (en) 1990-09-26
EP0389061B2 (en) 2002-01-02
AU626997B2 (en) 1992-08-13
HUT54320A (en) 1991-02-28
IE67071B1 (en) 1996-02-21
IE901020L (en) 1990-09-21
EP0389061A3 (en) 1992-03-18
IN177258B (es) 1996-12-14
HU209267B (en) 1994-04-28
CA2011860A1 (en) 1990-09-21
HU901613D0 (en) 1990-06-28
CA2011860C (en) 2000-02-22
ES2066952T5 (es) 2002-04-01
GB8906500D0 (en) 1989-05-04
AU5141490A (en) 1990-09-27

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