BR9708835A - Processo para tratar o licor do processo bayer contendo um componente formador de crosta - Google Patents
Processo para tratar o licor do processo bayer contendo um componente formador de crostaInfo
- Publication number
- BR9708835A BR9708835A BR9708835A BR9708835A BR9708835A BR 9708835 A BR9708835 A BR 9708835A BR 9708835 A BR9708835 A BR 9708835A BR 9708835 A BR9708835 A BR 9708835A BR 9708835 A BR9708835 A BR 9708835A
- Authority
- BR
- Brazil
- Prior art keywords
- crust
- forming component
- treating liquor
- bayer
- bayer process
- Prior art date
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
- C01F7/0646—Separation of the insoluble residue, e.g. of red mud
- C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry
-
- 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
- C01F7/0633—Digestion characterised by the use of additives
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)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Paper (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/639,466 US5733460A (en) | 1996-04-29 | 1996-04-29 | Use of hydroxamated polymers to alter Bayer Process scale |
PCT/US1997/006914 WO1997041065A1 (en) | 1996-04-29 | 1997-04-25 | Use of hydroxamated polymers to alter bayer process scale |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9708835A true BR9708835A (pt) | 1999-08-03 |
Family
ID=24564205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9708835A BR9708835A (pt) | 1996-04-29 | 1997-04-25 | Processo para tratar o licor do processo bayer contendo um componente formador de crosta |
Country Status (12)
Country | Link |
---|---|
US (1) | US5733460A (pt) |
EP (1) | EP0896570B1 (pt) |
CN (1) | CN1216968A (pt) |
AU (1) | AU717997B2 (pt) |
BR (1) | BR9708835A (pt) |
CA (1) | CA2252697C (pt) |
DE (1) | DE69701220T2 (pt) |
ES (1) | ES2142161T3 (pt) |
GR (1) | GR3033217T3 (pt) |
RU (1) | RU2189357C2 (pt) |
UA (1) | UA58512C2 (pt) |
WO (1) | WO1997041065A1 (pt) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5750070A (en) * | 1996-07-19 | 1998-05-12 | Nalco Chemical Company | Use of biodegradable polymers in preventing corrosion and scale build-up |
US6086771A (en) * | 1997-12-12 | 2000-07-11 | Nalco Chemical Company | Water continuous emulsion polymers for improving scale control in the bayer process |
US7390415B2 (en) | 2002-07-22 | 2008-06-24 | Cytec Technology Corp. | Method and compositions for preventing or reducing aluminosilicate scale in alkaline industrial processes |
AU2008201441B2 (en) * | 2002-07-22 | 2010-08-12 | Cytec Technology Corp. | Method of preventing or reducing aluminosilicate scale in a Bayer process |
US6814873B2 (en) * | 2002-07-22 | 2004-11-09 | Cytec Technology Corp. | Method of preventing or reducing aluminosilicate scale in a bayer process |
ES2646563T3 (es) | 2005-02-25 | 2017-12-14 | Cytec Technology Corp. | Emulsiones de agua en aceite en agua de polímeros hidroxamatados y métodos para utilizar las mismas |
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 |
US8545776B2 (en) | 2009-09-25 | 2013-10-01 | Nalco Company | Reducing aluminosilicate scale in the Bayer process |
US8282834B2 (en) | 2009-09-25 | 2012-10-09 | Nalco Company | Di- and mono-alkoxysilane functionalized polymers and their application 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 |
WO2024094892A1 (en) * | 2022-11-04 | 2024-05-10 | Cytec Industries Inc. | Titanate scale inhibition in a single stream bayer process |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3345344A (en) * | 1961-09-08 | 1967-10-03 | Nopco Chem Co | Process for conversion of amidoxime polymers to polyhydroxamic acids using aqueous hydrochloric acid solutions |
US4096869A (en) * | 1977-05-05 | 1978-06-27 | Halliburton Company | Formulation for the dissolution of gypsum |
GB2070108B (en) * | 1980-02-14 | 1984-02-08 | Elf Aquitaine | Drilling and/or completion muds |
FR2533572A1 (fr) * | 1982-09-28 | 1984-03-30 | Elf Aquitaine | Perfectionnements a la preparation de polymeres a fonctions hydroxamiques, nouveaux polymeres obtenus et leurs applications |
FR2536383A1 (fr) * | 1982-11-24 | 1984-05-25 | Elf Aquitaine | Procede et produit pour l'empechement de l'entartrage par des eaux |
FR2538717B1 (fr) * | 1982-12-31 | 1987-09-11 | Elf Aquitaine | Procede et produit pour l'inhibition du depot d'argiles dans de l'eau |
US4767540A (en) * | 1987-02-11 | 1988-08-30 | American Cyanamid Company | Polymers containing hydroxamic acid groups for reduction of suspended solids in bayer process streams |
US5027891A (en) * | 1988-03-30 | 1991-07-02 | Alcan International Limited | Method for transferring heat between process liquor streams |
AU643899B2 (en) * | 1991-07-24 | 1993-11-25 | Nalco Chemical Company | Hydroxamic acid containing polymers used as corrosion inhibitors |
US5314626A (en) * | 1991-12-23 | 1994-05-24 | Nalco Chemical Company | Method for the alteration of siliceous materials from Bayer process liquids |
AU650199B1 (en) * | 1992-08-03 | 1994-06-09 | Nalco Chemical Company | Method for the alteration of siliceous materials from Bayer process liquors |
US5415782A (en) * | 1993-11-22 | 1995-05-16 | Nalco Chemical Company | Method for the alteration of siliceous materials from bayer process liquors |
US5539046A (en) * | 1994-11-04 | 1996-07-23 | Cytec Technology Corp. | Blends of hydroxamated polymer emulsions with polyacrylate emulsions |
-
1996
- 1996-04-29 US US08/639,466 patent/US5733460A/en not_active Expired - Lifetime
-
1997
- 1997-04-25 CN CN97194163A patent/CN1216968A/zh active Pending
- 1997-04-25 WO PCT/US1997/006914 patent/WO1997041065A1/en active IP Right Grant
- 1997-04-25 EP EP97921372A patent/EP0896570B1/en not_active Expired - Lifetime
- 1997-04-25 AU AU27428/97A patent/AU717997B2/en not_active Ceased
- 1997-04-25 DE DE69701220T patent/DE69701220T2/de not_active Expired - Lifetime
- 1997-04-25 BR BR9708835A patent/BR9708835A/pt not_active IP Right Cessation
- 1997-04-25 CA CA002252697A patent/CA2252697C/en not_active Expired - Fee Related
- 1997-04-25 RU RU98121409/12A patent/RU2189357C2/ru not_active IP Right Cessation
- 1997-04-25 UA UA98116281A patent/UA58512C2/uk unknown
- 1997-04-25 ES ES97921372T patent/ES2142161T3/es not_active Expired - Lifetime
-
2000
- 2000-04-13 GR GR20000400908T patent/GR3033217T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
EP0896570B1 (en) | 2000-01-26 |
RU2189357C2 (ru) | 2002-09-20 |
CA2252697C (en) | 2005-04-05 |
GR3033217T3 (en) | 2000-08-31 |
AU2742897A (en) | 1997-11-19 |
CN1216968A (zh) | 1999-05-19 |
UA58512C2 (uk) | 2003-08-15 |
CA2252697A1 (en) | 1997-11-06 |
WO1997041065A1 (en) | 1997-11-06 |
ES2142161T3 (es) | 2000-04-01 |
DE69701220D1 (de) | 2000-03-02 |
AU717997B2 (en) | 2000-04-06 |
US5733460A (en) | 1998-03-31 |
DE69701220T2 (de) | 2000-09-28 |
EP0896570A1 (en) | 1999-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] | ||
B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE A 19A ANUIDADE. |
|
B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |