WO2009085514A3 - Reducing autoprecipitation in bayer liquor - Google Patents

Reducing autoprecipitation in bayer liquor Download PDF

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Publication number
WO2009085514A3
WO2009085514A3 PCT/US2008/084817 US2008084817W WO2009085514A3 WO 2009085514 A3 WO2009085514 A3 WO 2009085514A3 US 2008084817 W US2008084817 W US 2008084817W WO 2009085514 A3 WO2009085514 A3 WO 2009085514A3
Authority
WO
WIPO (PCT)
Prior art keywords
autoprecipitation
process liquor
gum
reducing
bayer liquor
Prior art date
Application number
PCT/US2008/084817
Other languages
French (fr)
Other versions
WO2009085514A2 (en
Inventor
Qi Dai
Terence Foster
Original Assignee
Cytec Technology Corp.
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 Cytec Technology Corp. filed Critical Cytec Technology Corp.
Publication of WO2009085514A2 publication Critical patent/WO2009085514A2/en
Publication of WO2009085514A3 publication Critical patent/WO2009085514A3/en

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
    • C01F7/0633—Digestion characterised by the use of additives
    • 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
    • C01F7/04—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
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

A method to inhibit autoprecipitation of aluminum containing compounds in a Bayer process liquor includes adding an effective amount of a polysaccharide to the Bayer process liquor. Polysaccharides which are added in accordance with the present method selected from gum arahic, tamarind gum, gum ghatti and mixtures thereof. Effective addition sites for the autoprecipitation inhibitor are prior to filtering clarified process liquor and subsequent to condensation of caustic soda from spent process liquor.
PCT/US2008/084817 2007-12-28 2008-11-26 Reducing autoprecipitation in bayer liquor WO2009085514A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1730407P 2007-12-28 2007-12-28
US61/017,304 2007-12-28

Publications (2)

Publication Number Publication Date
WO2009085514A2 WO2009085514A2 (en) 2009-07-09
WO2009085514A3 true WO2009085514A3 (en) 2010-01-14

Family

ID=40344993

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/084817 WO2009085514A2 (en) 2007-12-28 2008-11-26 Reducing autoprecipitation in bayer liquor

Country Status (1)

Country Link
WO (1) WO2009085514A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9199855B2 (en) 2010-08-09 2015-12-01 Nalco Company Chemical treatment to improve red mud separation and washing in the bayer process
US9174852B2 (en) 2010-08-09 2015-11-03 Nalco Company Methods to improve filtration for the Bayer process
US9102995B2 (en) 2010-08-09 2015-08-11 Nalco Company Cross-linked ethylsulfonated dihydroxypropyl cellulose
US8252266B2 (en) * 2010-08-09 2012-08-28 Nalco Company Recovery of alumina trihydrate during the bayer process using scleroglucan
US8298508B2 (en) * 2010-08-09 2012-10-30 Nalco Company Recovery of alumina trihydrate during the bayer process using cross-linked polysaccharides
AU2011301134B2 (en) 2010-09-06 2015-05-07 Alcoa Of Australia Limited Method of increasing the stability of a bayer process liquor
CN103124782B (en) * 2010-09-16 2015-08-26 C20技术发展公司 By the Coal dressing that the biomass of adding and volatile matter control
JP2014508863A (en) 2011-03-18 2014-04-10 オーバイト アルミナ インコーポレイテッド Method for recovering rare earth elements from aluminum-containing materials
US9410227B2 (en) 2011-05-04 2016-08-09 Orbite Technologies Inc. Processes for recovering rare earth elements from various ores
EP2714594A4 (en) 2011-06-03 2015-05-20 Orbite Aluminae Inc Methods for preparing hematite
US9382600B2 (en) 2011-09-16 2016-07-05 Orbite Technologies Inc. Processes for preparing alumina and various other products
JP6025868B2 (en) 2012-01-10 2016-11-16 オーバイト アルミナ インコーポレイテッドＯｒｂｉｔｅ Ａｌｕｍｉｎａｅ Ｉｎｃ． Process to treat red mud
AU2013203808B2 (en) 2012-03-29 2016-07-28 Aem Technologies Inc. Processes for treating fly ashes
RU2597096C2 (en) 2012-07-12 2016-09-10 Орбит Алюминэ Инк. Methods of producing titanium oxide and other products
BR112015006536A2 (en) 2012-09-26 2017-08-08 Orbite Aluminae Inc processes for preparing alumina and magnesium chloride by hcl leaching of various materials.
WO2014070487A1 (en) * 2012-10-29 2014-05-08 Nalco Company Methods to improve filtration for the bayer process
BR112015011049A2 (en) 2012-11-14 2017-07-11 Orbite Aluminae Inc Methods for Purification of Aluminum Ions
US10427950B2 (en) 2015-12-04 2019-10-01 Ecolab Usa Inc. Recovery of mining processing product using boronic acid-containing polymers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734796A (en) * 1956-02-14 Composition comprising stable solid sodium aluminate
FR1356638A (en) * 1963-05-09 1964-03-27 Reynolds Metals Co Improvements to stabilized alkali metal aluminates and processes for their preparation
US4839060A (en) * 1987-04-28 1989-06-13 Suncor, Inc. Methylated starch compositions and their use as flocculating agents for mineral wastes, such as bauxite residues

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734796A (en) * 1956-02-14 Composition comprising stable solid sodium aluminate
FR1356638A (en) * 1963-05-09 1964-03-27 Reynolds Metals Co Improvements to stabilized alkali metal aluminates and processes for their preparation
US4839060A (en) * 1987-04-28 1989-06-13 Suncor, Inc. Methylated starch compositions and their use as flocculating agents for mineral wastes, such as bauxite residues

Also Published As

Publication number Publication date
WO2009085514A2 (en) 2009-07-09

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