DE69600868T2 - Verfahren zur behandlung von bauxit mit aluminium-hydroxid mit niedrigem gehalt an reaktivem siliciumoxid - Google Patents

Verfahren zur behandlung von bauxit mit aluminium-hydroxid mit niedrigem gehalt an reaktivem siliciumoxid

Info

Publication number
DE69600868T2
DE69600868T2 DE69600868T DE69600868T DE69600868T2 DE 69600868 T2 DE69600868 T2 DE 69600868T2 DE 69600868 T DE69600868 T DE 69600868T DE 69600868 T DE69600868 T DE 69600868T DE 69600868 T2 DE69600868 T2 DE 69600868T2
Authority
DE
Germany
Prior art keywords
silicon oxide
aluminum hydroxide
low content
reactive silicon
treating bauxite
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
DE69600868T
Other languages
English (en)
Other versions
DE69600868D1 (de
Inventor
Jean-Michel Lamerant
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 France SAS
Original Assignee
Aluminium Pechiney SA
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 Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Application granted granted Critical
Publication of DE69600868D1 publication Critical patent/DE69600868D1/de
Publication of DE69600868T2 publication Critical patent/DE69600868T2/de
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
    • C01F7/0606—Making-up the alkali hydroxide solution from recycled spent liquor
    • 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)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Nutrition Science (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
DE69600868T 1995-03-31 1996-03-26 Verfahren zur behandlung von bauxit mit aluminium-hydroxid mit niedrigem gehalt an reaktivem siliciumoxid Expired - Lifetime DE69600868T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9504069A FR2732332B1 (fr) 1995-03-31 1995-03-31 Procede de traitement de bauxite a trihydrate d'alumine a basse teneur en silice reactive
PCT/FR1996/000450 WO1996030305A1 (fr) 1995-03-31 1996-03-26 Procede de traitement de bauxite a trihydrate d'alumine a basse teneur en silice reactive

Publications (2)

Publication Number Publication Date
DE69600868D1 DE69600868D1 (de) 1998-12-03
DE69600868T2 true DE69600868T2 (de) 1999-05-27

Family

ID=9477798

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69600868T Expired - Lifetime DE69600868T2 (de) 1995-03-31 1996-03-26 Verfahren zur behandlung von bauxit mit aluminium-hydroxid mit niedrigem gehalt an reaktivem siliciumoxid

Country Status (11)

Country Link
US (1) US5653947A (de)
EP (1) EP0765290B1 (de)
AU (1) AU705287B2 (de)
BR (1) BR9605948A (de)
CA (1) CA2190295C (de)
DE (1) DE69600868T2 (de)
ES (1) ES2124093T3 (de)
FR (1) FR2732332B1 (de)
HR (1) HRP960126A2 (de)
OA (1) OA10384A (de)
WO (1) WO1996030305A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2758544B1 (fr) * 1997-01-22 1999-02-26 Pechiney Aluminium Procede ameliore de traitement de bauxites riches en monohydrate d'alumine
FR2771081B1 (fr) * 1997-11-17 1999-12-17 Pechiney Aluminium Production de trihydrate d'alumine avec controle separe de la teneur en sodium et de la granulometrie
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
FR2870535B1 (fr) 2004-05-18 2007-02-16 Aluminium Pechiney Soc Par Act Perfectionnement au procede bayer de production de trihydrate d'alumine par attaque alcaline de bauxite, ledit procede comportant une etape de predessilicatation
GB0415227D0 (en) * 2004-07-07 2004-08-11 Accentus Plc Precipitation of silica in a Bayer process
CN1730393A (zh) * 2005-07-18 2006-02-08 贵阳铝镁设计研究院 高铁三水铝土矿溶出技术
CN102398914B (zh) * 2010-09-10 2013-10-16 中国科学院过程工程研究所 一种改进拜耳法处理低品位一水硬铝石型铝土矿生产氧化铝的方法
US8662173B2 (en) * 2011-04-11 2014-03-04 Saudi Arabian Oil Company Plugging thief zones and fractures by in-situ and in-depth crystallization for improving water sweep efficiency of sandstone and carbonate reservoirs

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3413087A (en) * 1964-03-13 1968-11-26 Reynolds Metals Co Method for extracting alumina from its ores
FR1506516A (fr) * 1966-11-08 1967-12-22 Reynolds Metals Co Perfectionnements aux procédés pour l'extraction d'alumine à partir de minerais alumineux
US4145398A (en) * 1974-02-19 1979-03-20 Vereinigte Aluminium-Werke A.G. Bauxite digestion by caustic alkali with improved heat transfer in tubular reactors
JPS57145029A (en) * 1981-02-27 1982-09-07 Sumitomo Alum Smelt Co Ltd Extracting method of alumina from mixed type bauxite
FR2534899A1 (fr) * 1982-10-20 1984-04-27 Pechiney Aluminium Procede d'obtention de trihydroxyde d'a luminium de diametre median inferieur a 4 microns regle a la demande
FR2581053B1 (fr) * 1985-04-30 1987-05-29 Pechiney Aluminium Production d'alumine a partir de bauxite a gibbsite a basse teneur en silice reactive
CA1330865C (en) * 1989-01-31 1994-07-26 George Dennison Fulford Process for producing alumina from bauxite
US5163973A (en) * 1990-02-14 1992-11-17 Alcan Internatinal Limited Process for producing low soda alumina
AU658235B2 (en) * 1991-10-30 1995-04-06 Sumitomo Chemical Company, Limited Process for producing aluminium hydroxide from alumina-containing ore
AU5876694A (en) * 1993-02-01 1994-08-29 Alcan International Limited Process and apparatus for the extraction of gibbsitic alumina from bauxite

Also Published As

Publication number Publication date
CA2190295A1 (fr) 1996-10-03
WO1996030305A1 (fr) 1996-10-03
AU5278796A (en) 1996-10-16
AU705287B2 (en) 1999-05-20
HRP960126A2 (en) 1997-08-31
CA2190295C (fr) 2003-09-16
FR2732332B1 (fr) 1997-05-09
EP0765290A1 (de) 1997-04-02
OA10384A (fr) 2001-11-30
BR9605948A (pt) 1997-08-12
FR2732332A1 (fr) 1996-10-04
DE69600868D1 (de) 1998-12-03
EP0765290B1 (de) 1998-10-28
US5653947A (en) 1997-08-05
ES2124093T3 (es) 1999-01-16

Similar Documents

Publication Publication Date Title
DE69701714D1 (de) Verfahren zur behandlung von glassubstraten
DE69603838D1 (de) Verfahren zur behandlung von gasen
DE69603435T2 (de) Verfahren zur Flüssigkeitskühlung eines Wechselrichters
DE19680561T1 (de) Vorrichtung und Verfahren zur Aufbereitung von Wasser
DE69623967D1 (de) Verfahren und vorrichtung zur thermischen behandlung von halbleitersubstraten
ATE225185T1 (de) Verfahren zur behandlung von allergischem asthma
DE69603277D1 (de) Verfahren zur plasma aktivierten wärmebehandlung von titannitrid
DE69625690D1 (de) Verfahren zur vorbeugung und behandlung von allergien
DE69532445D1 (de) System und verfahren zur verbesserung von graphischen merkmalen von markierungsgeräten
DE69501946T2 (de) Kontinuierliches verfahren zur aminolyse von ethylencopolymeren
DE69625195D1 (de) Verfahren und vorrichtung zur beschichtung von mit gewinde versehenen befestigungselementen
DE69429917D1 (de) Verfahren und vorrichtung zur gruppenkodierung von signalen
DE69921502D1 (de) System und verfahren zur vorfilterung von paketen mit niedriger priorität
DE69526730T2 (de) Verfahren und vorrichtung zur automatischen endbearbeitung von viereckigen kleidungsstücken
ATA160296A (de) Verfahren und vorrichtung zur direktreduktion von eisenoxid-feinstoffen
DE69519583T2 (de) Verfahren zur entwässerung von schlämmen
DE69814467D1 (de) Verfahren zur prophylaktischen behandlung von mastitis
DE69600868T2 (de) Verfahren zur behandlung von bauxit mit aluminium-hydroxid mit niedrigem gehalt an reaktivem siliciumoxid
DE69614958T2 (de) Gerät und Verfahren zur Detektion von Fingerabdruckmerkmalen
DE69431560D1 (de) Verfahren zur verminderung des gehaltes an vorlauferverbindungen von schlamm undlack in schmierolen
DE69729039D1 (de) Verfahren und vorrichtung zur behandlung von flaschen
DE69621861D1 (de) Verfahren zur Umsetzung von Aluminiumkrätzen und Aluminiumkrätze enthaltende Rückständen in Calciumaluminat
DE69626311D1 (de) Zusammensetzung zur behandlung von wäsche sowie verfahren hierfür
DE69609082T2 (de) Verfahren zur behandlung von abfällen
DE69802904T2 (de) Verbessertes verfahren zur behandlung von aluminiummonohydratreichen bauxiten

Legal Events

Date Code Title Description
8364 No opposition during term of opposition