BR9306780A - Processo para extração de alumina a partir da bauxita - Google Patents

Processo para extração de alumina a partir da bauxita

Info

Publication number
BR9306780A
BR9306780A BR9306780A BR9306780A BR9306780A BR 9306780 A BR9306780 A BR 9306780A BR 9306780 A BR9306780 A BR 9306780A BR 9306780 A BR9306780 A BR 9306780A BR 9306780 A BR9306780 A BR 9306780A
Authority
BR
Brazil
Prior art keywords
bauxite
extracting alumina
alumina
extracting
Prior art date
Application number
BR9306780A
Other languages
English (en)
Inventor
Anthony John Crisp
Original Assignee
Comalco Alu
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 Comalco Alu filed Critical Comalco Alu
Publication of BR9306780A publication Critical patent/BR9306780A/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
    • C01F7/04—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
    • 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

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)
BR9306780A 1992-07-24 1993-07-22 Processo para extração de alumina a partir da bauxita BR9306780A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL375492 1992-07-24
PCT/AU1993/000369 WO1994002416A1 (en) 1992-07-24 1993-07-22 Process for extracting alumina from bauxite

Publications (1)

Publication Number Publication Date
BR9306780A true BR9306780A (pt) 1998-12-08

Family

ID=3776319

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9306780A BR9306780A (pt) 1992-07-24 1993-07-22 Processo para extração de alumina a partir da bauxita

Country Status (5)

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

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
CA2140773A1 (en) 1994-02-03
EP0651728A1 (en) 1995-05-10
WO1994002416A1 (en) 1994-02-03
EP0651728A4 (en) 1995-09-27

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Legal Events

Date Code Title Description
EG Technical examination (opinion): publication of technical examination (opinion)
FC Decision: refusal