EP0777628A4 - Procede ameliore concernant l'extraction d'alumine a partir de la bauxite - Google Patents

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

Info

Publication number: EP0777628A4
Authority: EP; European Patent Office
Prior art keywords: bauxite; alumina; extraction; improved process; improved
Prior art date: 1994-08-23
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP95928901A

Other languages

German (de)

English (en)

Other versions

EP0777628A1 (fr

Inventor

Darren Paul Rodda

Raymond Walter Shaw

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

Comalco Aluminum Ltd

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.)

1994-08-23

Filing date

1995-08-23

Publication date

1999-06-09

1995-08-23 Application filed by Comalco Aluminum Ltd filed Critical Comalco Aluminum Ltd

1997-06-11 Publication of EP0777628A1 publication Critical patent/EP0777628A1/fr

1999-06-09 Publication of EP0777628A4 publication Critical patent/EP0777628A4/fr

Status Withdrawn legal-status Critical Current

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)

EP95928901A 1994-08-23 1995-08-23 Procede ameliore concernant l'extraction d'alumine a partir de la bauxite Withdrawn EP0777628A4 (fr)

Applications Claiming Priority (3)

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
AUPM7611/94		1994-08-23
PCT/AU1995/000526 WO1996006043A1 (fr)	1994-08-23	1995-08-23	Procede ameliore concernant l'extraction d'alumine a partir de la bauxite

Publications (2)

Publication Number	Publication Date
EP0777628A1 EP0777628A1 (fr)	1997-06-11
EP0777628A4 true EP0777628A4 (fr)	1999-06-09

Family

ID=3782132

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95928901A Withdrawn EP0777628A4 (fr)	1994-08-23	1995-08-23	Procede ameliore concernant l'extraction d'alumine a partir de la bauxite

Country Status (5)

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

Families Citing this family (9)

* 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
US9487408B2 (en)	2009-09-25	2016-11-08	Nalco Company	Reducing aluminosilicate scale in the bayer process
US9416020B2 (en)	2009-09-25	2016-08-16	Nalco Company	Surfactant based small molecules for 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
WO2024252209A1 (fr)	2023-06-08	2024-12-12	3M Innovative Properties Company	Matériau céramique à base d'alumine alpha et ses procédés de fabrication

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
WO1994002416A1 (fr) *	1992-07-24	1994-02-03	Comalco Aluminium Limited	Procede d'extraction d'alumine de la bauxite

Family Cites Families (7)

* 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
CA1330865C (fr) *	1989-01-31	1994-07-26	George Dennison Fulford	Procede de production d'alumine a partir de 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
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.

1994
- 1994-08-23 AU AUPM7611A patent/AUPM761194A0/en not_active Abandoned
1995
- 1995-08-23 CA CA002197457A patent/CA2197457A1/fr not_active Abandoned
- 1995-08-23 BR BR9508761A patent/BR9508761A/pt not_active Application Discontinuation
- 1995-08-23 EP EP95928901A patent/EP0777628A4/fr not_active Withdrawn
- 1995-08-23 WO PCT/AU1995/000526 patent/WO1996006043A1/fr not_active Application Discontinuation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
WO1994002416A1 (fr) *	1992-07-24	1994-02-03	Comalco Aluminium Limited	Procede d'extraction d'alumine de la bauxite

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 101, no. 24, 10 December 1984, Columbus, Ohio, US; abstract no. 213412, SHMIGIDIN, YU. I. ET AL: "Decomposition of high-modulus aluminate solutions from the pilot-plant treatment of nepheline rocks of the Sea of Azov region" XP002081109 *
DATABASE WPI Section Ch Derwent World Patents Index; Class E33, AN 71-53735S, XP002081110 *
KHIM. TEKHNOL. (KIEV) (1984), (2), 18-20 CODEN: KHMTA6;ISSN: 0368-556X *
See also references of WO9606043A1 *

Also Published As

Publication number	Publication date
BR9508761A (pt)	1998-01-13
AUPM761194A0 (en)	1994-09-15
CA2197457A1 (fr)	1996-02-29
WO1996006043A1 (fr)	1996-02-29
EP0777628A1 (fr)	1997-06-11

Publication	Publication Date	Title
HU895636D0 (en)	1990-01-28	Process for the separation of aluminium oxide from bauxite
AU4878290A (en)	1990-08-09	Process for producing alumina from bauxite
GB2322235B (en)	2000-09-27	Metals removal process
EP0671454A3 (fr)	1996-08-21	Procédé pour l'élimination d'hétéroatomes.
EP0768928A4 (fr)	1999-05-12	Elimination du liant contenu dans des produits a base de tantale
GB9726117D0 (en)	1998-02-11	Process for producing alumina
ZA958357B (en)	1996-04-26	Process for extracting metals from solution
EP0950020A4 (fr)	2000-03-08	Procede pour separer la silice de la bauxite
EP0777628A4 (fr)	1999-06-09	Procede ameliore concernant l'extraction d'alumine a partir de la bauxite
EP0611837A4 (fr)	1994-10-12	Procede d'obtention d'aluminium a partir d'une matiere premiere contenant de l'oxyde d'aluminium.
HUP9904510A3 (en)	2000-08-28	Process for the synthesis of benzothiophenes
IL117849A0 (en)	1996-08-04	Process for the purification of glycoproteins
HUP0002119A3 (en)	2001-12-28	Process for the removal of heavy metals
GB9209313D0 (en)	1992-06-17	Process for the extraction of alumina
AU3248195A (en)	1996-03-14	Improved process for the extraction of alumina from bauxite
GB9602343D0 (en)	1996-04-03	Production of alumina
IL114214A0 (en)	1995-10-31	Process for the preparation of peptide trisulfides
GB9725895D0 (en)	1998-02-04	Process for the removal of contaminants
ZA955641B (en)	1996-02-16	Process for the separation of lactulose
ZA984676B (en)	1998-12-29	Process for the recovery of alpha olefins
ZA965895B (en)	1997-01-31	Process for the preparation of alpha omega-bromochloro-alkanes
IL113555A0 (en)	1995-08-31	Process for the synthesis of haloalkylferrocenes
GB2285760B (en)	1997-09-24	Removal of material from surfaces
EG21037A (en)	2000-09-30	Process for the synthesis of benzathiophenes
AU3297995A (en)	1996-04-18	Process for the removal of sodium oxalate

Legal Events

Date	Code	Title	Description
1997-04-25	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1997-06-11	17P	Request for examination filed	Effective date: 19970305
1997-06-11	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE ES FR IE IT
1999-06-09	A4	Supplementary search report drawn up and despatched	Effective date: 19990426
1999-06-09	AK	Designated contracting states	Kind code of ref document: A4 Designated state(s): DE ES FR IE IT
1999-12-03	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2000-01-19	18D	Application deemed to be withdrawn	Effective date: 19990710