ES2086368T3 - Procedimiento mejorado para producir alumina a partir de bauxita. - Google Patents

Procedimiento mejorado para producir alumina a partir de bauxita.

Info

Publication number
ES2086368T3
ES2086368T3 ES90300898T ES90300898T ES2086368T3 ES 2086368 T3 ES2086368 T3 ES 2086368T3 ES 90300898 T ES90300898 T ES 90300898T ES 90300898 T ES90300898 T ES 90300898T ES 2086368 T3 ES2086368 T3 ES 2086368T3
Authority
ES
Spain
Prior art keywords
bauxite
dispersion
solution
alumina
caustic
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
ES90300898T
Other languages
English (en)
Inventor
George Dennison Fulford
David Robert Chinloy
Pierre Gervais Cousineau
Stephen Ostrap
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.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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
Application filed by Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Application granted granted Critical
Publication of ES2086368T3 publication Critical patent/ES2086368T3/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
    • 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
    • C01F7/04—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
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud

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

UN PROCESO PARA PRODUCIR ALUMINA A PARTIR DE BAUXITA POR EL PROCESO BAYER. SE PRESIONA UNA DISPERSION DE BAUXITA HASTA SU ASIMILACION EN UNA SOLUCION DE SOSA CAUSTICA, PARA DISOLVER LOS HIDROXIDOS DE ALUMINIO DE LA BAUXITA COMO ALUMINATO SODICO, MIENTRAS SE DESECHA LA MAYOR PARTE DE LOS CONSTITUYENTES REMANENTES DE LA BAUXITA DE FORMA SOLIDA, COMO BARRO ROJO. EL BARRO ROJO SE SEPARA DE LA DISPERSION PARA OBTENER UNA SOLUCION ACUOSA RESULTANTE CON ALUMINATO Y RESTOS DE LA SOSA CAUSTICA, DE ESTA SOLUCION SE PRECIPITA HIDRATO DE ALUMINA Y ESTE SE CALCINA PARA OBTENER ALUMINA. LA SEPARACION DEL BARRO ROJO DE LA DISPERSION SE REALIZA A UNA TEMPERATURA POR ENCIMA DE LA TEMPERATURA DE EBULLICION A PRESION ATMOSFERICA DE LA FASE LIQUIDA DEL BARRO.
ES90300898T 1989-01-31 1990-01-29 Procedimiento mejorado para producir alumina a partir de bauxita. Expired - Lifetime ES2086368T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000589667A CA1330865C (en) 1989-01-31 1989-01-31 Process for producing alumina from bauxite

Publications (1)

Publication Number Publication Date
ES2086368T3 true ES2086368T3 (es) 1996-07-01

Family

ID=4139545

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90300898T Expired - Lifetime ES2086368T3 (es) 1989-01-31 1990-01-29 Procedimiento mejorado para producir alumina a partir de bauxita.

Country Status (8)

Country Link
US (1) US4994244A (es)
EP (1) EP0382383B1 (es)
CN (1) CN1022996C (es)
AU (1) AU619149B2 (es)
BR (1) BR9000421A (es)
CA (1) CA1330865C (es)
ES (1) ES2086368T3 (es)
IE (1) IE81147B1 (es)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118484A (en) * 1990-08-17 1992-06-02 Alcan International Limited Desilication of bayer process solutions
US5545384A (en) * 1991-10-30 1996-08-13 Sumitomo Chemical Co., Ltd. Process for production of aluminum hydroxide from ore containing alumina
JP2658771B2 (ja) * 1991-12-27 1997-09-30 日本軽金属株式会社 赤泥の沈降分離における赤泥沈降助剤の添加方法
EP0681560A1 (en) * 1993-02-01 1995-11-15 Alcan International Limited Process and apparatus for the extraction of gibbsitic alumina from bauxite
AUPM761194A0 (en) * 1994-08-23 1994-09-15 Comalco Aluminium Limited Improved process for the extraction of alumina from bauxite
AT401654B (de) * 1994-10-14 1996-11-25 Andritz Patentverwaltung Verfahren zur entwässerung und waschung von rotschlamm
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
US5607598A (en) * 1995-07-14 1997-03-04 Ormet Corporation Treatment and disposal of red mud generated in the Bayer Process
US5951955A (en) * 1995-11-07 1999-09-14 Cytec Technology Corp. Concentration of solids in the Bayer process
AU712311B2 (en) * 1995-11-07 1999-11-04 Cytec Technology Corp. Concentration of solids in the bayer process
US5853677A (en) * 1996-04-26 1998-12-29 Cytec Technology Corp. Concentration of solids by flocculating in the Bayer process
AUPO376296A0 (en) * 1996-11-20 1996-12-12 Comalco Aluminium Limited Removal of silica from bauxite
FR2758544B1 (fr) * 1997-01-22 1999-02-26 Pechiney Aluminium Procede ameliore de traitement de bauxites riches en monohydrate d'alumine
CN1069882C (zh) * 1997-11-07 2001-08-22 中南工业大学 湿法化学预处理中低品位铝土矿的化学选矿工艺
BRPI0419053A (pt) * 2004-09-17 2007-12-11 Alcor Technology B V método e equipamento para a extração de gibbsita a partir de bauxita e método para a produção de alumina por calcinação de gibbsita
CN100457802C (zh) * 2005-03-24 2009-02-04 长春人造树脂厂股份有限公司 经过改性的聚酰胺树脂及其组成物
CN1331555C (zh) * 2005-12-09 2007-08-15 贵阳铝镁设计研究院 氧化铝生产线中赤泥过滤车间的配置方法
CN100532263C (zh) * 2007-09-18 2009-08-26 中国铝业股份有限公司 混联法氧化铝生产中过滤机硅渣的处理方法
AU2012231686B2 (en) 2011-03-18 2015-08-27 Aem Technologies Inc. Processes for recovering rare earth elements from aluminum-bearing materials
US9410227B2 (en) 2011-05-04 2016-08-09 Orbite Technologies Inc. Processes for recovering rare earth elements from various ores
WO2012162817A1 (en) 2011-06-03 2012-12-06 Orbite Aluminae Inc. Methods for preparing hematite
WO2013037054A1 (en) 2011-09-16 2013-03-21 Orbite Aluminae Inc. Processes for preparing alumina and various other products
RU2016104423A (ru) 2012-01-10 2018-11-22 Орбит Текнолоджис Инк. Способы обработки красного шлама
CA2862307C (en) 2012-03-29 2015-12-01 Orbite Aluminae Inc. Processes for treating fly ashes
BR112015000626A2 (pt) 2012-07-12 2017-06-27 Orbite Aluminae Inc processos para preparação de óxido de titânio e outros produtos variados
US9353425B2 (en) 2012-09-26 2016-05-31 Orbite Technologies Inc. Processes for preparing alumina and magnesium chloride by HCl leaching of various materials
CA2891427C (en) 2012-11-14 2016-09-20 Orbite Aluminae Inc. Methods for purifying aluminium ions
FI125479B (en) * 2013-12-23 2015-10-30 Outotec Finland Oy Combined heater decants and method for increasing the density of feed suspension
CN104843751B (zh) * 2015-06-10 2016-05-18 沈阳鑫博工业技术股份有限公司 一种铝土矿活化煅烧低温溶出系统及活化煅烧和溶出方法
CN106319218B (zh) * 2015-06-16 2019-12-24 有研稀土新材料股份有限公司 从含稀土的铝硅废料中回收稀土、铝和硅的方法
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
CN112299460B (zh) * 2020-10-27 2022-11-04 中国铝业股份有限公司 一种协同高效氧化铝土矿溶出浆液中硫和有机物的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1747759A (en) * 1925-02-11 1930-02-18 Dorr Co Process for the manufacture of sodium aluminate
US4083925A (en) * 1976-03-22 1978-04-11 Martin Marietta Aluminum, Inc. Method for removing ferrous iron from alkali metal aluminate liquor
EP0058786A1 (en) * 1981-02-19 1982-09-01 Handy Chemicals Limited Stable aqueous alkali metal aluminate solutions
AU558556B2 (en) * 1981-09-10 1987-02-05 Comalco Limited Alumina production
US4483830A (en) * 1981-09-10 1984-11-20 Comalco Limited Production of alumina
US4446117A (en) * 1983-04-04 1984-05-01 Alumina Development Corporation Double digestion system to reduce formation of ferrous iron

Also Published As

Publication number Publication date
AU4878290A (en) 1990-08-09
EP0382383B1 (en) 1996-05-08
EP0382383A2 (en) 1990-08-16
US4994244A (en) 1991-02-19
AU619149B2 (en) 1992-01-16
EP0382383A3 (en) 1992-03-04
CA1330865C (en) 1994-07-26
IE81147B1 (en) 2000-05-03
IE900243L (en) 1990-07-31
BR9000421A (pt) 1991-01-15
CN1045254A (zh) 1990-09-12
CN1022996C (zh) 1993-12-08

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