BRPI0415197A - processo para reduzir a obstrução dos trocadores térmicos de um circuito bayer - Google Patents

processo para reduzir a obstrução dos trocadores térmicos de um circuito bayer

Info

Publication number: BRPI0415197A
Authority: BR; Brazil
Prior art keywords: liquor; bauxite; sodium aluminate; aluminate liquor; bayer
Prior art date: 2003-10-10

Application number

BRPI0415197-6A

Other languages

English (en)

Portuguese (pt)

Inventor

Benoit Cristol

Valerie Esquerre

Original Assignee

Pechiney Aluminium

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.)

2003-10-10

Filing date

2004-10-08

Publication date

2006-12-05

2004-10-08 Application filed by Pechiney Aluminium filed Critical Pechiney Aluminium

2006-12-05 Publication of BRPI0415197A publication Critical patent/BRPI0415197A/pt

Links

238000000034 method Methods 0.000 title abstract 3
150000004645 aluminates Chemical class 0.000 abstract 3
ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 abstract 3
229910001570 bauxite Inorganic materials 0.000 abstract 3
229910001388 sodium aluminate Inorganic materials 0.000 abstract 3
239000011575 calcium Substances 0.000 abstract 2
229910052791 calcium Inorganic materials 0.000 abstract 2
150000001875 compounds Chemical class 0.000 abstract 2
238000000354 decomposition reaction Methods 0.000 abstract 2
238000000926 separation method Methods 0.000 abstract 2
238000004131 Bayer process Methods 0.000 abstract 1
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
RREGISFBPQOLTM-UHFFFAOYSA-N alumane;trihydrate Chemical compound O.O.O.[AlH3] RREGISFBPQOLTM-UHFFFAOYSA-N 0.000 abstract 1
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
150000001669 calcium Chemical class 0.000 abstract 1
238000001704 evaporation Methods 0.000 abstract 1
235000020094 liqueur Nutrition 0.000 abstract 1
238000003801 milling Methods 0.000 abstract 1
239000000203 mixture Substances 0.000 abstract 1
239000007787 solid Substances 0.000 abstract 1
150000004684 trihydrates Chemical class 0.000 abstract 1
238000011144 upstream manufacturing Methods 0.000 abstract 1

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
- C01F7/0606—Making-up the alkali hydroxide solution from recycled spent liquor

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)
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

BRPI0415197-6A 2003-10-10 2004-10-08 processo para reduzir a obstrução dos trocadores térmicos de um circuito bayer BRPI0415197A (pt)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR0311909A FR2860782B1 (fr)	2003-10-10	2003-10-10	Procede pour reduire l'encrassement des echangeurs thermiques d'un circuit bayer
PCT/FR2004/002538 WO2005035445A2 (fr)	2003-10-10	2004-10-08	Procede pour reduire l'encrassement des echangeurs thermiques d'un circuit bayer

Publications (1)

Publication Number	Publication Date
BRPI0415197A true BRPI0415197A (pt)	2006-12-05

Family

ID=34355407

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BRPI0415197-6A BRPI0415197A (pt)	2003-10-10	2004-10-08	processo para reduzir a obstrução dos trocadores térmicos de um circuito bayer

Country Status (6)

Country	Link
CN (1)	CN1960945A (fr)
AU (1)	AU2004280272B2 (fr)
BR (1)	BRPI0415197A (fr)
FR (1)	FR2860782B1 (fr)
OA (1)	OA13269A (fr)
WO (1)	WO2005035445A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2934852B1 (fr) *	2008-08-06	2011-06-24	Alcan Int Ltd	Perfectionnement au procede bayer de production de trihydrate d'alumine, ledit procede comprenant une etape dans laquelle la liqueur sursaturee est filtree a haute temperature avant decomposition

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1474885A (fr) *	1966-02-07	1967-03-31	Electro Chimie Soc D	Procédé de détartrage des appareils utilisés pour la concentration des solutions d'aluminate de sodium
US5118484A (en) *	1990-08-17	1992-06-02	Alcan International Limited	Desilication of bayer process solutions
FR2686872B1 (fr) *	1992-02-05	1994-06-03	Pechiney Aluminium	Procede d'elimination de l'oxalate de sodium des solutions d'aluminate de sodium du cycle bayer.
AUPM761194A0 (en) *	1994-08-23	1994-09-15	Comalco Aluminium Limited	Improved process for the extraction of alumina from bauxite
JPH0975498A (ja) *	1995-09-07	1997-03-25	Nishizawa:Kk	スキー

2003
- 2003-10-10 FR FR0311909A patent/FR2860782B1/fr not_active Expired - Fee Related
2004
- 2004-10-08 OA OA1200600117A patent/OA13269A/fr unknown
- 2004-10-08 WO PCT/FR2004/002538 patent/WO2005035445A2/fr not_active Ceased
- 2004-10-08 BR BRPI0415197-6A patent/BRPI0415197A/pt not_active IP Right Cessation
- 2004-10-08 AU AU2004280272A patent/AU2004280272B2/en not_active Ceased
- 2004-10-08 CN CNA200480033571XA patent/CN1960945A/zh active Pending

Also Published As

Publication number	Publication date
CN1960945A (zh)	2007-05-09
OA13269A (fr)	2007-01-31
WO2005035445A2 (fr)	2005-04-21
FR2860782A1 (fr)	2005-04-15
AU2004280272A1 (en)	2005-04-21
AU2004280272B2 (en)	2009-08-06
FR2860782B1 (fr)	2006-09-29
WO2005035445A3 (fr)	2006-06-22

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Legal Events

Date	Code	Title	Description
2013-09-24	B08F	Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]	Free format text: REFERENTE A 8A E 9A ANUIDADES
2014-02-18	B08K	Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]	Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2229 DE 24/09/2013.