BR0208836A - Processo para remoção de impurezas aniÈnicas de soluções de aluminato cáustico - Google Patents

Processo para remoção de impurezas aniÈnicas de soluções de aluminato cáustico

Info

Publication number
BR0208836A
BR0208836A BR0208836-3A BR0208836A BR0208836A BR 0208836 A BR0208836 A BR 0208836A BR 0208836 A BR0208836 A BR 0208836A BR 0208836 A BR0208836 A BR 0208836A
Authority
BR
Brazil
Prior art keywords
aluminate
substituted
removal
caustic
anionic
Prior art date
Application number
BR0208836-3A
Other languages
English (en)
Other versions
BR0208836B1 (pt
Inventor
Steven Philip Rosenberg
Wayne Tchbon
Alex Richmond Aboagye
Catherine Anne Heath
Darrel James Wilson
Original Assignee
Worsley Alumina Pty 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 Worsley Alumina Pty Ltd filed Critical Worsley Alumina Pty Ltd
Publication of BR0208836A publication Critical patent/BR0208836A/pt
Publication of BR0208836B1 publication Critical patent/BR0208836B1/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
    • C01F7/16—Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/164—Calcium aluminates
    • 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)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

"PROCESSO PARA A REMOçãO DE IMPUREZAS ANIÈNICAS DE SOLUçõES DE ALUMINATO CáUSTICO". A presente invenção se refere a um processo para a remoção de impurezas aniónicas de solução de aluminato cáustico possuindo íons aluminato tetrahidróxico aquoso. Uma solução de aluminato cáustico é obtida tal que as impurezas aniónicas são parcial ou substancialmente substituídas nos íons de aluminato tetrahidróxico para formar íons de aluminato substitutidos. Um composto adequado de cálcio, tal como cal viva, é reagido em um extintor convencional (10) com uma solução de extinção, por exemplo, água, e estocado em um tanque de estocagem agitado (12). A pasta resultante é bombeada para um vaso de reação (14) onde ela é reagida com uma solução de aluminato cáustico sob condições apropriadas tal que o composto de cálcio seja convertido em precipitado (TCA) de aluminato tri-cálcio. Quando da reação, os íons de aluminato substituídos da reação são substancialmente incorporados dentro do precipitado de TCA para formar um precipitado de TCA substitutido permitindo que as impurezas aniónicas sejam removidas da solução via o precipitado de TCA substitutido para descarte ou remoção. O licor de aluminato cáustico pode ser opcionalmente fortificado com uma impureza aniónica pela mistura do mesmo em um tanque de mistura (16) com a impureza aniónica.
BRPI0208836-3A 2001-04-11 2002-04-10 processo para remover impurezas aniÈnicas de uma solução cáustica e precipitado de aluminato tri-cálcio. BR0208836B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPR4370A AUPR437001A0 (en) 2001-04-11 2001-04-11 Process for the removal of anionic impurities from caustic aluminate solutions
AUPR4370 2001-04-11
PCT/AU2002/000459 WO2002083564A1 (en) 2001-04-11 2002-04-10 Process for the removal of anionic impurities from caustic aluminate solutions

Publications (2)

Publication Number Publication Date
BR0208836A true BR0208836A (pt) 2004-03-09
BR0208836B1 BR0208836B1 (pt) 2011-08-09

Family

ID=3828366

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0208836-3A BR0208836B1 (pt) 2001-04-11 2002-04-10 processo para remover impurezas aniÈnicas de uma solução cáustica e precipitado de aluminato tri-cálcio.

Country Status (4)

Country Link
US (1) US7691348B2 (pt)
AU (1) AUPR437001A0 (pt)
BR (1) BR0208836B1 (pt)
WO (1) WO2002083564A1 (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006084328A1 (en) * 2005-02-11 2006-08-17 Billiton Aluminium Australia Pty Ltd Alumina recovery
AU2006212716B2 (en) * 2005-02-11 2011-01-27 South32 Aluminium (Raa) Pty Ltd Alumina recovery
WO2013131119A1 (en) * 2012-03-07 2013-09-12 Bhp Billiton Worsley Alumina Pty Ltd System for causticisation of a bayer liquor
AU2012203295B1 (en) * 2012-03-07 2013-03-21 South32 Worsley Alumina Pty Ltd System for causticisation of a bayer liquor
EP3802428A4 (en) * 2018-05-28 2022-03-23 Alcoa of Australia Limited PROCEDURE FOR CONTROLLING THE CONCENTRATION OF IMPURITIES IN BAYER LIQUIDS
EP3802429A4 (en) * 2018-05-28 2022-03-23 Alcoa of Australia Limited IMPURITY CONTROL METHOD

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2208173A (en) * 1939-04-05 1940-07-16 Charles H Lewis Process for effecting anion exchange
US2557891A (en) * 1949-03-30 1951-06-19 Kaiser Aluminium Chem Corp Process for control of phosphate in alumina production
SU346924A1 (ru) * 1970-08-13 1978-05-15 Государственный научно-исследовательский и проектный институт редкометаллической промышленности Способ очистки от примесей алюминатных растворов
HU173150B (hu) * 1975-10-07 1979-03-28 Magyar Aluminium Sposob obrabotka natrievo-aljuminievoj hhjolochi obrazovannoj pri proizvodstve glinozjoma, bazirovannoj na polimorfizme dvukalcievogo silikata
CA1285373C (fr) * 1984-06-25 1991-07-02 Jean Fabre Purification des solutions d'aluminate de sodium du cycle bayer par elimination d'oxalate de sodium
AU563304B2 (en) 1984-12-21 1987-07-02 Comalco Aluminium Limited Soz leach to recover soda and alumina from red mud with recycle to bayer process
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.
AU5171293A (en) * 1992-10-14 1994-05-09 Regents Of The University Of Colorado, The Ion-pairing of drugs for improved efficacy and delivery
US5470559A (en) 1993-02-26 1995-11-28 Alcan International Limited Recycling of spent pot linings
FR2736908B1 (fr) 1995-07-20 1997-08-29 Pechiney Aluminium Procede d'epuration des solutions d'aluminate de sodium contenant de l'oxalate de sodium
GB9726117D0 (en) * 1997-12-11 1998-02-11 Isis Innovation Process for producing alumina
AUPP536598A0 (en) * 1998-08-20 1998-09-10 Worsley Alumina Pty Ltd Organic impurity removal process for bayer liquors
DE69943304D1 (de) * 1998-09-25 2011-05-05 Bhp Billiton Worsley Alumina Pty Ltd Verbesserte Bayer-Kaustifizierung
AUPP933499A0 (en) * 1999-03-19 1999-04-15 Worsley Alumina Pty Ltd Process for the removal of oxalate and/or sulphate from bayer liquors
AUPQ889100A0 (en) 2000-07-20 2000-08-10 Worsley Alumina Pty Ltd Improved process for filter aid production in alumina refineries

Also Published As

Publication number Publication date
WO2002083564A1 (en) 2002-10-24
US20040146455A1 (en) 2004-07-29
BR0208836B1 (pt) 2011-08-09
AUPR437001A0 (en) 2001-05-17
US7691348B2 (en) 2010-04-06

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 10/04/2002, OBSERVADAS AS CONDICOES LEGAIS.

B25D Requested change of name of applicant approved

Owner name: BHP BILLITON WORSLEY ALUNINA PTY LTD. (AU)

Free format text: NOME ALTERADO DE: WORSLEY ALUMINA PTY LTD.

B25D Requested change of name of applicant approved

Owner name: SOUTH32 WORSLEY ALUMINA PTY LTD (AU)

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 18A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: MANUTENCAO DA EXTINCAO - ART. 78 INCISO IV DA LPI