DE69308777T2 - Änderung der Trihydrat-Kristalle im Bayer-Verfahren - Google Patents
Änderung der Trihydrat-Kristalle im Bayer-VerfahrenInfo
- Publication number
- DE69308777T2 DE69308777T2 DE69308777T DE69308777T DE69308777T2 DE 69308777 T2 DE69308777 T2 DE 69308777T2 DE 69308777 T DE69308777 T DE 69308777T DE 69308777 T DE69308777 T DE 69308777T DE 69308777 T2 DE69308777 T2 DE 69308777T2
- Authority
- DE
- Germany
- Prior art keywords
- bayer process
- change
- trihydrate crystals
- alumina
- alumina trihydrate
- Prior art date
- 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.)
- Expired - Fee Related
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
- C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
- C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
- C01F7/145—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process characterised by the use of a crystal growth modifying agent other than aluminium hydroxide seed
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US99065892A | 1992-12-14 | 1992-12-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69308777D1 DE69308777D1 (de) | 1997-04-17 |
DE69308777T2 true DE69308777T2 (de) | 1997-07-31 |
Family
ID=25536387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69308777T Expired - Fee Related DE69308777T2 (de) | 1992-12-14 | 1993-12-09 | Änderung der Trihydrat-Kristalle im Bayer-Verfahren |
Country Status (6)
Country | Link |
---|---|
US (1) | US6599489B2 (de) |
EP (1) | EP0602900B1 (de) |
AT (1) | ATE149971T1 (de) |
AU (1) | AU660241B2 (de) |
BR (1) | BR9305055A (de) |
DE (1) | DE69308777T2 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5736122A (en) * | 1991-02-08 | 1998-04-07 | Diatide, Inc. | Technetium-99m labeled peptides for thrombus imaging |
ES2141102T3 (es) * | 1991-02-08 | 2000-03-16 | Diatide Inc | Polipeptidos marcados con tecnecio-99m para la generacion de imagenes. |
US5645815A (en) | 1991-02-08 | 1997-07-08 | Diatide, Inc. | Radiolabled compounds for thrombus imaging |
US5968476A (en) * | 1992-05-21 | 1999-10-19 | Diatide, Inc. | Technetium-99m labeled peptides for thrombus imaging |
EP0602900B1 (de) * | 1992-12-14 | 1997-03-12 | Nalco Chemical Company | Änderung der Trihydrat-Kristalle im Bayer-Verfahren |
US5902560A (en) * | 1997-08-28 | 1999-05-11 | Nalco Chemical Company | Method for inhibiting precipitation of sodium oxalate in a Bayer process liquor |
DE19930924A1 (de) * | 1999-07-06 | 2001-01-18 | Rwe Dea Ag | Verfahren zur Herstellung von Tonerdehydraten durch Fällung von Aluminiumsalzen in Gegenwart von Kristallisationskeimen |
US7955589B2 (en) * | 2005-06-23 | 2011-06-07 | Nalco Company | Composition and method for improved aluminum hydroxide production |
US7976820B2 (en) * | 2005-06-23 | 2011-07-12 | Nalco Company | Composition and method for improved aluminum hydroxide production |
US7771681B2 (en) * | 2006-12-29 | 2010-08-10 | Nalco Company | Method for improved aluminum hydroxide production |
US8282689B2 (en) | 2009-07-01 | 2012-10-09 | Nalco Company | Composition and method for enhancing the production of crystal agglomerates from a precipitation liquor |
US8920768B2 (en) | 2013-03-14 | 2014-12-30 | Ecolab Usa Inc. | Crystallization aids for bayer aluminum hydroxide |
US9592456B2 (en) | 2015-02-11 | 2017-03-14 | Ecolab Usa Inc. | Methods for enhancing production of aluminum hydroxide in an aluminum hydroxide production process |
US10427950B2 (en) | 2015-12-04 | 2019-10-01 | Ecolab Usa Inc. | Recovery of mining processing product using boronic acid-containing polymers |
CN109850929B (zh) * | 2018-12-31 | 2021-03-16 | 贵州博汇联润铝业有限公司 | 一种种分槽稀释原矿矿浆制备氢氧化铝微粉方法 |
Family Cites Families (18)
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 |
GB2070108B (en) | 1980-02-14 | 1984-02-08 | Elf Aquitaine | Drilling and/or completion muds |
US4374102A (en) * | 1981-11-13 | 1983-02-15 | Nalco Chemical Company | Polymers for controlling soda ash crystal formation |
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 |
US4608237A (en) * | 1985-04-24 | 1986-08-26 | Nalco Chemical Company | Use of polymers in alumina precipitation in the Bayer process of bauxite beneficiation |
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 |
US4737352A (en) * | 1987-04-09 | 1988-04-12 | Nalco Chemical Company | Use of surfactants in alumina precipitation in the bayer process |
US5093091A (en) | 1988-12-19 | 1992-03-03 | American Cyanamid Company | Method of removing iron from concentrated alum solutions |
US5106599A (en) * | 1990-02-06 | 1992-04-21 | Nalco Chemical Company | Alumina crystal growth additive |
CA2105333A1 (en) * | 1992-09-14 | 1994-03-15 | Robert P. Mahoney | Trihydrate clarification aid for the bayer process |
US5217620A (en) * | 1992-11-23 | 1993-06-08 | Nalco Chemical Company | Clarification aid for the Bayer process |
EP0602900B1 (de) * | 1992-12-14 | 1997-03-12 | Nalco Chemical Company | Änderung der Trihydrat-Kristalle im Bayer-Verfahren |
US5601726A (en) * | 1994-06-06 | 1997-02-11 | Cytec Technology Corp. | Hydroxameted polymers in the bayer process to reduce solids |
WO1997017293A1 (en) * | 1995-11-07 | 1997-05-15 | Cytec Technology Corp. | Reduction of impurities in bayer process alumina trihydrate |
US5951955A (en) * | 1995-11-07 | 1999-09-14 | Cytec Technology Corp. | Concentration of solids in the Bayer process |
US5853677A (en) * | 1996-04-26 | 1998-12-29 | Cytec Technology Corp. | Concentration of solids by flocculating in the Bayer process |
-
1993
- 1993-12-09 EP EP93309924A patent/EP0602900B1/de not_active Expired - Lifetime
- 1993-12-09 DE DE69308777T patent/DE69308777T2/de not_active Expired - Fee Related
- 1993-12-09 AT AT93309924T patent/ATE149971T1/de not_active IP Right Cessation
- 1993-12-10 AU AU52345/93A patent/AU660241B2/en not_active Expired
- 1993-12-14 BR BR9305055A patent/BR9305055A/pt not_active IP Right Cessation
-
2001
- 2001-04-02 US US09/824,137 patent/US6599489B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE149971T1 (de) | 1997-03-15 |
AU5234593A (en) | 1994-06-23 |
EP0602900A1 (de) | 1994-06-22 |
DE69308777D1 (de) | 1997-04-17 |
AU660241B2 (en) | 1995-06-15 |
EP0602900B1 (de) | 1997-03-12 |
BR9305055A (pt) | 1994-06-21 |
US6599489B2 (en) | 2003-07-29 |
US20020159936A1 (en) | 2002-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |