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BR9000421A - Processo bayer para produzir alunina a partir de bauxita - Google Patents

Processo bayer para produzir alunina a partir de bauxita

Info

Publication number
BR9000421A
BR9000421A BR909000421A BR9000421A BR9000421A BR 9000421 A BR9000421 A BR 9000421A BR 909000421 A BR909000421 A BR 909000421A BR 9000421 A BR9000421 A BR 9000421A BR 9000421 A BR9000421 A BR 9000421A
Authority
BR
Brazil
Prior art keywords
bauxite
bayer process
student
produce
produce student
Prior art date
Application number
BR909000421A
Other languages
English (en)
Inventor
George Dennison Fulford
David Robert Chinloy
Pierrre Gervais Cousineau
Stephen Ostap
Original Assignee
Alcan Int Ltd
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 Int Ltd filed Critical Alcan Int Ltd
Publication of BR9000421A publication Critical patent/BR9000421A/pt

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)
BR909000421A 1989-01-31 1990-01-31 Processo bayer para produzir alunina a partir de bauxita BR9000421A (pt)

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
BR9000421A true BR9000421A (pt) 1991-01-15

Family

ID=4139545

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909000421A BR9000421A (pt) 1989-01-31 1990-01-31 Processo bayer para produzir alunina a partir de bauxita

Country Status (8)

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

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
WO1994018122A1 (en) * 1993-02-01 1994-08-18 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
EP2686458A4 (en) 2011-03-18 2015-04-15 Orbite Aluminae Inc METHODS FOR RECOVERING RARE EARTH ELEMENTS FROM ALUMINUM-CONTAINING MATERIALS
EP2705169A4 (en) 2011-05-04 2015-04-15 Orbite Aluminae Inc METHOD FOR RECOVERING RARE ELEMENTS FROM DIFFERENT OTHERS
EP2714594A4 (en) 2011-06-03 2015-05-20 Orbite Aluminae Inc PROCESS FOR PRODUCING HEMATITE
BR112014006275A2 (pt) 2011-09-16 2017-04-11 Orbite Aluminae Inc processos de preparação de alumina e de vários outros produtos
AU2013202318B2 (en) 2012-01-10 2015-11-05 Aem Technologies Inc. Processes for treating red mud
CN104520237B (zh) 2012-03-29 2018-05-01 奥佰特氧化铝有限公司 处理飞灰的方法
WO2014008586A1 (en) 2012-07-12 2014-01-16 Orbite Aluminae Inc. Processes for preparing titanium oxide and various other products
US9353425B2 (en) 2012-09-26 2016-05-31 Orbite Technologies Inc. Processes for preparing alumina and magnesium chloride by HCl leaching of various materials
WO2014075173A1 (en) 2012-11-14 2014-05-22 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
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
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
US4483830A (en) * 1981-09-10 1984-11-20 Comalco Limited Production of alumina
AU558556B2 (en) * 1981-09-10 1987-02-05 Comalco Limited Alumina production
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
IE900243L (en) 1990-07-31
ES2086368T3 (es) 1996-07-01
AU619149B2 (en) 1992-01-16
CA1330865C (en) 1994-07-26
AU4878290A (en) 1990-08-09
CN1022996C (zh) 1993-12-08
EP0382383A3 (en) 1992-03-04
IE81147B1 (en) 2000-05-03
US4994244A (en) 1991-02-19
CN1045254A (zh) 1990-09-12
EP0382383A2 (en) 1990-08-16
EP0382383B1 (en) 1996-05-08

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Legal Events

Date Code Title Description
FB20 Grant procedure suspended (art. 20)
FB19 Grant procedure suspended (art. 19)
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 08/02/2010