BR9508761A - Processo aperfeiçoado para extração de alumina a partir de bauxita - Google Patents

Processo aperfeiçoado para extração de alumina a partir de bauxita

Info

Publication number
BR9508761A
BR9508761A BR9508761A BR9508761A BR9508761A BR 9508761 A BR9508761 A BR 9508761A BR 9508761 A BR9508761 A BR 9508761A BR 9508761 A BR9508761 A BR 9508761A BR 9508761 A BR9508761 A BR 9508761A
Authority
BR
Brazil
Prior art keywords
bauxite
improved process
extracting alumina
alumina
extracting
Prior art date
Application number
BR9508761A
Other languages
English (en)
Portuguese (pt)
Inventor
Darren Paul Rodda
Raymond Walter Shaw
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 BR9508761A publication Critical patent/BR9508761A/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
    • C01F7/46—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)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Nutrition Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
BR9508761A 1994-08-23 1995-08-23 Processo aperfeiçoado para extração de alumina a partir de bauxita BR9508761A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPM7611A AUPM761194A0 (en) 1994-08-23 1994-08-23 Improved process for the extraction of alumina from bauxite
PCT/AU1995/000526 WO1996006043A1 (en) 1994-08-23 1995-08-23 Improved process for the extraction of alumina from bauxite

Publications (1)

Publication Number Publication Date
BR9508761A true BR9508761A (pt) 1998-01-13

Family

ID=3782132

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9508761A BR9508761A (pt) 1994-08-23 1995-08-23 Processo aperfeiçoado para extração de alumina a partir de bauxita

Country Status (5)

Country Link
EP (1) EP0777628A4 (de)
AU (1) AUPM761194A0 (de)
BR (1) BR9508761A (de)
CA (1) CA2197457A1 (de)
WO (1) WO1996006043A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO376296A0 (en) * 1996-11-20 1996-12-12 Comalco Aluminium Limited Removal of silica 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
FR2860782B1 (fr) * 2003-10-10 2006-09-29 Pechiney Aluminium Procede pour reduire l'encrassement des echangeurs thermiques d'un circuit bayer
US8029752B2 (en) 2009-04-06 2011-10-04 Nalco Company Approach in controlling DSP scale in bayer process
US9416020B2 (en) 2009-09-25 2016-08-16 Nalco Company Surfactant based small molecules for reducing aluminosilicate scale in the bayer process
US9487408B2 (en) 2009-09-25 2016-11-08 Nalco Company Reducing aluminosilicate scale in the bayer process
CN106542553B (zh) * 2015-09-21 2018-05-22 沈阳铝镁设计研究院有限公司 一种氧化铝生产中三水铝石矿的溶出工艺方法
CN110563011A (zh) * 2019-09-12 2019-12-13 西南能矿集团股份有限公司 一种氧化铝制备用的脱硅剂及其制备方法

Family Cites Families (9)

* 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
US4446117A (en) * 1983-04-04 1984-05-01 Alumina Development Corporation Double digestion system to reduce formation of ferrous iron
US4518571A (en) * 1984-02-27 1985-05-21 Vsesojuzny Nauchno-Issledovatelsky I Proektny Institut Aljuminievo Magnievoi I Elektrodnoi Promyshlennosti Process for desilication of aluminate liquors in the production of alumina
CA1330865C (en) * 1989-01-31 1994-07-26 George Dennison Fulford Process for producing alumina from bauxite
GB8906500D0 (en) * 1989-03-21 1989-05-04 Shell Int Research Process for the production of aluminium hydroxide from bauxite
AU668979B2 (en) * 1992-07-24 1996-05-23 Comalco Aluminium Limited Extracting alumina from bauxite
EP0651728A4 (de) * 1992-07-24 1995-09-27 Comalco Alu Verfahren zur extraktion von aluminiumoxid aus bauxit.
FR2712275B1 (fr) * 1993-11-09 1995-12-15 Pechiney Aluminium Procédé de traitement de bauxites contenant un mélange de trihydrate d'alumine et de monohydrate d'alumine.

Also Published As

Publication number Publication date
AUPM761194A0 (en) 1994-09-15
WO1996006043A1 (en) 1996-02-29
EP0777628A1 (de) 1997-06-11
CA2197457A1 (en) 1996-02-29
EP0777628A4 (de) 1999-06-09

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Legal Events

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