ES2161369T3 - Procedimiento de depuracion de las soluciones de aluminato sodico que contienen oxalato sodico. - Google Patents

Procedimiento de depuracion de las soluciones de aluminato sodico que contienen oxalato sodico.

Info

Publication number
ES2161369T3
ES2161369T3 ES96925792T ES96925792T ES2161369T3 ES 2161369 T3 ES2161369 T3 ES 2161369T3 ES 96925792 T ES96925792 T ES 96925792T ES 96925792 T ES96925792 T ES 96925792T ES 2161369 T3 ES2161369 T3 ES 2161369T3
Authority
ES
Spain
Prior art keywords
oxalate
sodium
procedure
sodium aluminate
solution
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
ES96925792T
Other languages
English (en)
Inventor
Arnaud Soirat
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 ES2161369T3 publication Critical patent/ES2161369T3/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
    • C01F7/46—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
    • C01F7/473—Removal of organic compounds, e.g. sodium oxalate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Abstract

PROCEDIMIENTO DE DEPURACION EN OXALATO DE SODIO DE LAS SOLUCIONES DE ALUMINATO DE SODIO QUE RESULTA DEL ATAQUE ALCALINO DE LAS BAUXITAS SEGUN EL PROCEDIMIENTO BAYER QUE LLEVA: LA PRECIPITACION DE DICHO OXALATO DE SODIO EN AL MENOS UNA FRACCION DE LA SOLUCION DE ALUMINATO DE SODIO PREVIAMENTE DESCOMPUESTO, MEDIANTE UN AGENTE DE DESESTABILIZACION DEL ESTADO DE SOBRESATURACION DEL OXALATO DE SODIO, O CEBO DE DESOXALACION; LA SEPARACION DEL OXALATO, PRECIPITADO CON EL AGENTE DE DESEATABILIZACION EN FORMA DE UN RESIDUO INSOLUBLE, Y DE LA SOLUCION DE ALUMINATO DE SODIO DEPURADA QUE SE RECICLA ENTONCES COMO LICOR DE ATAQUE, CARACTERIZADO PORQUE EL AGENTE DE DESEASTABILIZACION O CEBO DE DESOXALACION, PUESTO EN CONTACTO CON LA SOLUCION DE ALUMINATO DE SODIO ES UNA SAL DISTINTA DE UN OXALATO, UN OXIDO METALICO, UN HIDROXIDO METALICO O SU MEZCLA, PERMANENCIENDO DICHO AGENTE DE DESESTABILIZACION INSOLUBLE E INERTE QUIMICAMENTE RESPECTO AL MEDIO DE REACCION, Y PORQUE TRAS LA REGENERACION EVENTUAL, SE RECICLA EN CABEZA DE PROCEDIMIENTO COMO CEBO DE DESOXALACION.
ES96925792T 1995-07-20 1996-07-16 Procedimiento de depuracion de las soluciones de aluminato sodico que contienen oxalato sodico. Expired - Lifetime ES2161369T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9509040A FR2736908B1 (fr) 1995-07-20 1995-07-20 Procede d'epuration des solutions d'aluminate de sodium contenant de l'oxalate de sodium

Publications (1)

Publication Number Publication Date
ES2161369T3 true ES2161369T3 (es) 2001-12-01

Family

ID=9481369

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96925792T Expired - Lifetime ES2161369T3 (es) 1995-07-20 1996-07-16 Procedimiento de depuracion de las soluciones de aluminato sodico que contienen oxalato sodico.

Country Status (11)

Country Link
US (1) US5888461A (es)
EP (1) EP0782544B1 (es)
AU (1) AU700993B2 (es)
BR (1) BR9606529A (es)
CA (1) CA2199059C (es)
DE (1) DE69614818T2 (es)
ES (1) ES2161369T3 (es)
FR (1) FR2736908B1 (es)
HU (1) HU220533B1 (es)
OA (1) OA10405A (es)
WO (1) WO1997003924A1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9726117D0 (en) * 1997-12-11 1998-02-11 Isis Innovation Process for producing alumina
FR2785895B1 (fr) * 1998-11-16 2001-01-19 Pechiney Aluminium Procede d'epuration des liqueurs d'aluminate de sodium contenant de l'oxalate de sodium permettant d'augmenter la quantite d'hydrate d'alumine produit
AUPP933499A0 (en) 1999-03-19 1999-04-15 Worsley Alumina Pty Ltd Process for the removal of oxalate and/or sulphate from bayer liquors
FR2794449B1 (fr) * 1999-06-04 2001-10-19 Pechiney Aluminium Procede d'epuration des liqueurs d'aluminate de sodium contenant de l'oxalate de sodium permettant de valoriser les residus
AUPQ889100A0 (en) * 2000-07-20 2000-08-10 Worsley Alumina Pty Ltd Improved process for filter aid production in alumina refineries
AUPR437001A0 (en) * 2001-04-11 2001-05-17 Worsley Alumina Pty Ltd Process for the removal of anionic impurities from caustic aluminate solutions
US20070036701A1 (en) * 2005-08-11 2007-02-15 Huege Fred R Treatment of high sulfate containing quicklime
CN101734697B (zh) * 2009-12-14 2011-12-28 中铝国际技术发展有限公司 在氢氧化铝洗液中添加石灰乳苛化消除有机物的方法
CN102070167B (zh) * 2010-12-15 2012-11-07 中国铝业股份有限公司 一种单晶型氢氧化铝的生产方法
CN102390851A (zh) * 2011-08-18 2012-03-28 中国铝业股份有限公司 一种高白氢氧化铝的生产方法
CN111757852A (zh) * 2018-02-23 2020-10-09 力拓加铝国际有限公司 拜耳工艺

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832442A (en) * 1970-10-20 1974-08-27 Kaiser Aluminium Chem Corp Method for producing alumina hydrates
US4263261A (en) * 1978-12-21 1981-04-21 Sumitomo Aluminium Smelting Company, Limited Method for the removal of impurities from sodium aluminate solution
US4275043A (en) * 1979-01-31 1981-06-23 Alcan Research And Development Limited Removal of oxalate from bayer process liquor
DE3214422A1 (de) * 1982-04-20 1983-10-27 Alcoa Chemie GmbH, 6700 Ludwigshafen Verfahren zur gewinnungs von feuerfest-rohstoffen bei gleichzeitiger entfernung von organischen substanzen aus kreislauflaugen des bayer-verfahrens
IE851086L (en) * 1984-05-03 1985-11-03 Du Pont Uk Removal of organics from bayer process streams
US4578255A (en) * 1984-12-27 1986-03-25 Kaiser Aluminum Chemical Corporation Purification of Bayer process liquors
US4915930A (en) * 1986-07-31 1990-04-10 Aluminum Company Of America Process for producing aluminum hydroxide of improved whiteness
US5093092A (en) * 1991-02-28 1992-03-03 Aluminum Company Of America Purification of bayer process liquor with alumina coated with a layer or carbon
FR2686872B1 (fr) * 1992-02-05 1994-06-03 Pechiney Aluminium Procede d'elimination de l'oxalate de sodium des solutions d'aluminate de sodium du cycle bayer.
US5385586A (en) * 1993-03-24 1995-01-31 Nalco Chemical Company Liquor oxalate stabilizers
US5728180A (en) * 1996-06-25 1998-03-17 Aluminum Company Of America Adsorbent combinations for enhanced removal of sodium oxalate from bayer process spent liquor

Also Published As

Publication number Publication date
HU220533B1 (hu) 2002-03-28
DE69614818D1 (de) 2001-10-04
WO1997003924A1 (fr) 1997-02-06
EP0782544A1 (fr) 1997-07-09
FR2736908A1 (fr) 1997-01-24
EP0782544B1 (fr) 2001-08-29
US5888461A (en) 1999-03-30
BR9606529A (pt) 1997-10-14
HUP9702302A2 (hu) 1998-08-28
OA10405A (fr) 2001-12-05
AU6617996A (en) 1997-02-18
CA2199059C (fr) 2008-10-14
HUP9702302A3 (en) 1998-12-28
FR2736908B1 (fr) 1997-08-29
AU700993B2 (en) 1999-01-14
CA2199059A1 (fr) 1997-02-06
DE69614818T2 (de) 2002-04-04

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