ES2177286T3 - Procedimiento para la eliminacion de silice de una disolucion alcalinaque contiene aluminato de sodio. - Google Patents

Procedimiento para la eliminacion de silice de una disolucion alcalinaque contiene aluminato de sodio.

Info

Publication number
ES2177286T3
ES2177286T3 ES99927616T ES99927616T ES2177286T3 ES 2177286 T3 ES2177286 T3 ES 2177286T3 ES 99927616 T ES99927616 T ES 99927616T ES 99927616 T ES99927616 T ES 99927616T ES 2177286 T3 ES2177286 T3 ES 2177286T3
Authority
ES
Spain
Prior art keywords
sodium aluminate
alkaline solution
elimination
silicon
procedure
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
ES99927616T
Other languages
English (en)
Inventor
Guy Forte
Renald Dufour
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 Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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 International Ltd Canada filed Critical Alcan International Ltd Canada
Application granted granted Critical
Publication of ES2177286T3 publication Critical patent/ES2177286T3/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
    • C01F7/0606—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)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Silicon Compounds (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

Un procedimiento para la separación de sílice disuelta procedente de una solución alcalina que contiene aluminato sódico, el cual comprende poner en contacto la solución alcalina con un lecho lentamente agitado de partículas que comprenden arena de sílice tosca o una mezcla de arena de sílice tosca y partículas de sodalita, con lo cual la sílice disuel-ta se separa por precipitación de la solución para formar una precipitación de producto de desilicación dispersado en la solución, y la separación de los sólidos del producto de desilicación remanentes procedentes de la solución alcalina para obtener una solución alcalina desilicada.
ES99927616T 1998-06-19 1999-06-18 Procedimiento para la eliminacion de silice de una disolucion alcalinaque contiene aluminato de sodio. Expired - Lifetime ES2177286T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/100,063 US6086834A (en) 1998-06-19 1998-06-19 Process for the removal of silica from an alkaline solution containing sodium aluminate

Publications (1)

Publication Number Publication Date
ES2177286T3 true ES2177286T3 (es) 2002-12-01

Family

ID=22277933

Family Applications (1)

Application Number Title Priority Date Filing Date
ES99927616T Expired - Lifetime ES2177286T3 (es) 1998-06-19 1999-06-18 Procedimiento para la eliminacion de silice de una disolucion alcalinaque contiene aluminato de sodio.

Country Status (9)

Country Link
US (1) US6086834A (es)
EP (1) EP1087908B1 (es)
CN (1) CN1159223C (es)
AU (1) AU750520B2 (es)
BR (1) BR9911364A (es)
DE (1) DE69901394T2 (es)
ES (1) ES2177286T3 (es)
MY (1) MY116036A (es)
WO (1) WO1999067172A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO2008017109A1 (en) * 2006-08-07 2008-02-14 Alcoa Of Australia Limited Method for management of contaminants in alkaline process liquors
RU2374179C2 (ru) * 2008-01-09 2009-11-27 Институт химии твердого тела Уральского отделения Российской Академии наук Способ обескремнивания алюминатных растворов
US8029752B2 (en) * 2009-04-06 2011-10-04 Nalco Company Approach in controlling DSP scale in bayer process
CN102674415A (zh) * 2012-04-24 2012-09-19 中国铝业股份有限公司 一种铝土矿生产氧化铝过程的除硫方法
RU2526986C1 (ru) * 2013-01-09 2014-08-27 Общество с ограниченной ответственностью научно-производственное предприятие "ЭКОФЕС" Способ очистки воды от силикатов

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US938432A (en) * 1909-03-05 1909-10-26 Aluminum Co Of America Removal of silica in the manufacture of alumina.
US2519362A (en) * 1943-08-04 1950-08-22 Einar P Flint Method of reducing the concentration of silica in sodium aluminate solutions
US3440005A (en) * 1965-06-21 1969-04-22 Reynolds Metals Co Process for removing chromium and silicon values from aluminate solutions
GB1145105A (en) * 1966-05-24 1969-03-12 Reynolds Metals Co Alumina production
FR2020340A1 (fr) * 1968-10-10 1970-07-10 Kaiser Aluminium Chem Corp Perfectionnements apportes aux procedes de recuperation de l'alumine des bauxites
JPS5422198B2 (es) * 1974-09-28 1979-08-04
JPS57145029A (en) * 1981-02-27 1982-09-07 Sumitomo Alum Smelt Co Ltd Extracting method of alumina from mixed type bauxite
US4483830A (en) * 1981-09-10 1984-11-20 Comalco Limited Production of alumina
US4414115A (en) * 1981-12-21 1983-11-08 Aluminum Company Of America Removal of copper and zinc species from Bayer process liquor by filtration
US4661328A (en) * 1985-06-19 1987-04-28 Aluminum Company Of America Alumina from high silica bauxite
US4614641A (en) * 1985-06-19 1986-09-30 Aluminum Company Of America Parallel purification of alumina with physical pretreatment
EP0339766A1 (en) * 1988-04-06 1989-11-02 Alcan International Limited Reducing colloidal iron levels in bayer liquors
US5118484A (en) * 1990-08-17 1992-06-02 Alcan International Limited Desilication of bayer process solutions

Also Published As

Publication number Publication date
BR9911364A (pt) 2001-03-13
WO1999067172A1 (en) 1999-12-29
AU750520B2 (en) 2002-07-18
AU4493399A (en) 2000-01-10
DE69901394T2 (de) 2002-10-17
EP1087908B1 (en) 2002-05-02
US6086834A (en) 2000-07-11
EP1087908A1 (en) 2001-04-04
MY116036A (en) 2003-10-31
CN1305438A (zh) 2001-07-25
DE69901394D1 (de) 2002-06-06
CN1159223C (zh) 2004-07-28

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