CA2140773A1 - Procede d'extraction de l'alumine a partir de la bauxite - Google Patents

Procede d'extraction de l'alumine a partir de la bauxite

Info

Publication number
CA2140773A1
CA2140773A1 CA002140773A CA2140773A CA2140773A1 CA 2140773 A1 CA2140773 A1 CA 2140773A1 CA 002140773 A CA002140773 A CA 002140773A CA 2140773 A CA2140773 A CA 2140773A CA 2140773 A1 CA2140773 A1 CA 2140773A1
Authority
CA
Canada
Prior art keywords
liquor
alumina
bauxite
caustic
mixture
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.)
Abandoned
Application number
CA002140773A
Other languages
English (en)
Inventor
Anthony John Crisp
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 Aluminium Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2140773A1 publication Critical patent/CA2140773A1/fr
Abandoned 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
    • 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

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)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Extraction Or Liquid Replacement (AREA)
CA002140773A 1992-07-24 1993-07-22 Procede d'extraction de l'alumine a partir de la bauxite Abandoned CA2140773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL375492 1992-07-24
AUPL3754 1992-07-24

Publications (1)

Publication Number Publication Date
CA2140773A1 true CA2140773A1 (fr) 1994-02-03

Family

ID=3776319

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002140773A Abandoned CA2140773A1 (fr) 1992-07-24 1993-07-22 Procede d'extraction de l'alumine a partir de la bauxite

Country Status (5)

Country Link
EP (1) EP0651728A4 (fr)
KR (1) KR950702506A (fr)
BR (1) BR9306780A (fr)
CA (1) CA2140773A1 (fr)
WO (1) WO1994002416A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPM761194A0 (en) * 1994-08-23 1994-09-15 Comalco Aluminium Limited Improved process for the extraction of alumina from bauxite
US6528028B2 (en) * 1999-12-28 2003-03-04 Showa Denko K.K. Process for treating bauxite in which a desilication product and an insoluble residure are separately precipitated

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324769A (en) * 1979-10-01 1982-04-13 Alumina Development Corporation Extraction and production of alumina containing less than 0.03 percent iron oxide
JPS57145029A (en) * 1981-02-27 1982-09-07 Sumitomo Alum Smelt Co Ltd Extracting method of alumina from mixed type bauxite
AU551019B2 (en) * 1981-05-15 1986-04-17 James W. McDaniel Reducing iron content of bayer process solutions
US4446117A (en) * 1983-04-04 1984-05-01 Alumina Development Corporation Double digestion system to reduce formation of ferrous iron
GB8906500D0 (en) * 1989-03-21 1989-05-04 Shell Int Research Process for the production of aluminium hydroxide from bauxite

Also Published As

Publication number Publication date
KR950702506A (ko) 1995-07-29
EP0651728A1 (fr) 1995-05-10
WO1994002416A1 (fr) 1994-02-03
BR9306780A (pt) 1998-12-08
EP0651728A4 (fr) 1995-09-27

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued