ES2124093T3 - Procedimiento de tratamiento de bauxita con trihidrato de alumina con una proporcion reducida de silice reactivo. - Google Patents

Procedimiento de tratamiento de bauxita con trihidrato de alumina con una proporcion reducida de silice reactivo.

Info

Publication number
ES2124093T3
ES2124093T3 ES96909202T ES96909202T ES2124093T3 ES 2124093 T3 ES2124093 T3 ES 2124093T3 ES 96909202 T ES96909202 T ES 96909202T ES 96909202 T ES96909202 T ES 96909202T ES 2124093 T3 ES2124093 T3 ES 2124093T3
Authority
ES
Spain
Prior art keywords
sub
bauxite
axi
degrees
concentration
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
ES96909202T
Other languages
English (en)
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 ES2124093T3 publication Critical patent/ES2124093T3/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
    • C01F7/0606—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)

Abstract

PROCEDIIMENTO DE TRATAMIENTO DE BAUXITA CON TRIHIDRATO DE ALUMINA CON BAJO CONTENIDO EN SILICE REACTIVA POR ATAQUE ALCALINO SEGUN EL PROCEDIMIENTO BAYER DE DICHA BAUXITA TRITURADA A LA PRESION ATMOSFERICA Y CARACTERIZADO PORQUE: A LA DESECACION ANTES DEL ATAQUE DE DICHA BAUXITA TRITURADA, O PREDESECACION, DE UNA DURACION MINIMA DE 30 MINUTOS EFECTUADA A UNA TEMPERATURA QUE NO SOBREPASA 108 (GRADOS) C EN PRESENCIA DE UNA ALICUOTA DE LICOR DESCOMPUESTO DE RELACIONES RP DE LAS CONCENTRACIONES AL{SUB,2}O{SUB,3} SOL G/L(NA{SUB,2}= CAUST G/L NO CRITICO GENERALMENTE COMPRENDIDO ENTRE 0,5 Y 0,7, DE CONCENTRACION DE MATERIA SECA ES AL MENOS DE 0,7 TONELADA POR M{SUP,3} DE SUSPENSION, SE ASOCIA, INMEDIATAMENTE TRAS EL ATAQUE ATMOSFERICO DE DICHA SUSPENSION POR EL RESTO DEL LICOR DESCOMPUESTO DE RP NO CRITICO GENERALMENTE COMPRENDIDO ENTRE 0,5 Y 0,7 Y DE CONCENTRACION EN SOSA CAUSTICA AJUSTADA ENTRE 180 Y 220 G NA{SUB,2}O/LITRO , UNA SEGUNDA DESECACION O POSTDESECACION DE UNA DURACION DE AL MENOS 2 HORAS A UNA TEMPERATURA QUE NO SOBRE PASA 108 (GRADOS) C Y GENERALMENTE COMPRENDIDA ENTRE 95 Y 105 (GRADOS) C DE LA TOTALIDAD DE LA SUSPENSION RESULTANTE DEL ATAQUE CUYO RP ESTA ENTONCES COMPRENDIDO ENTRE 1,05 Y 1,17 Y LA CONCENTRACION EN SOSA CAUSTICA ESTA PREVIAMENTE AJUSTADA POR DILUCION ENTRE 140 Y 180 G NA{SUB,2}O/LITRO.
ES96909202T 1995-03-31 1996-03-26 Procedimiento de tratamiento de bauxita con trihidrato de alumina con una proporcion reducida de silice reactivo. Expired - Lifetime ES2124093T3 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES2124093T3 true ES2124093T3 (es) 1999-01-16

Family

ID=9477798

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96909202T Expired - Lifetime ES2124093T3 (es) 1995-03-31 1996-03-26 Procedimiento de tratamiento de bauxita con trihidrato de alumina con una proporcion reducida de silice reactivo.

Country Status (11)

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

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
CA2099279C (en) * 1991-10-30 2003-03-18 Takuo Harato Process for production of aluminium hydroxide from ore containing alumina
EP0681560A1 (en) * 1993-02-01 1995-11-15 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
FR2732332B1 (fr) 1997-05-09
WO1996030305A1 (fr) 1996-10-03
BR9605948A (pt) 1997-08-12
OA10384A (fr) 2001-11-30
EP0765290B1 (fr) 1998-10-28
DE69600868T2 (de) 1999-05-27
US5653947A (en) 1997-08-05
CA2190295C (fr) 2003-09-16
HRP960126A2 (en) 1997-08-31
AU5278796A (en) 1996-10-16
AU705287B2 (en) 1999-05-20
FR2732332A1 (fr) 1996-10-04
DE69600868D1 (de) 1998-12-03
EP0765290A1 (fr) 1997-04-02

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