CA2000515A1 - Recovery of alumina from bauxite - Google Patents
Recovery of alumina from bauxiteInfo
- Publication number
- CA2000515A1 CA2000515A1 CA2000515A CA2000515A CA2000515A1 CA 2000515 A1 CA2000515 A1 CA 2000515A1 CA 2000515 A CA2000515 A CA 2000515A CA 2000515 A CA2000515 A CA 2000515A CA 2000515 A1 CA2000515 A1 CA 2000515A1
- Authority
- CA
- Canada
- Prior art keywords
- liquor
- liquors
- red mud
- bauxite
- alumina
- 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.)
- Granted
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
- C01F7/46—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
-
- 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
Abstract
Red mud in Bayer process liquors are flocculated using dextran and synthetic anionic polymer in the same stage, usually added separately to the liquor. The liquor may be the primary settler slurry, the secondary clarification liquor or one or more of the red mud washing stages. The process is of particular advantage where the liquors are high in carbonate content and/or total alkalinity.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8824176.5 | 1988-10-14 | ||
GB888824176A GB8824176D0 (en) | 1988-10-14 | 1988-10-14 | Recovery of alumina from bauxite |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2000515A1 true CA2000515A1 (en) | 1990-04-14 |
CA2000515C CA2000515C (en) | 2000-01-25 |
Family
ID=10645236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002000515A Expired - Fee Related CA2000515C (en) | 1988-10-14 | 1989-10-12 | Recovery of alumina from bauxite |
Country Status (8)
Country | Link |
---|---|
US (1) | US5008089A (en) |
EP (1) | EP0367437B1 (en) |
AU (1) | AU625642B2 (en) |
CA (1) | CA2000515C (en) |
DE (1) | DE68902625T2 (en) |
ES (1) | ES2034647T3 (en) |
GB (1) | GB8824176D0 (en) |
HU (1) | HU204734B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091159A (en) * | 1991-06-10 | 1992-02-25 | Nalco Chemical Company | Use of dextran as a filtration aid for thickener overflow filtration in Kelly filters in the Bayer process |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5080803A (en) * | 1989-10-13 | 1992-01-14 | Alcan International Limited | Process for decantation of suspensions |
OA09268A (en) * | 1989-10-13 | 1992-08-31 | Alcan Int Ltd | Process and apparatus for decantation of suspensions. |
US5043077A (en) * | 1989-12-11 | 1991-08-27 | Alcan International Limited | Treatment of bayer process red mud slurries |
US5106599A (en) * | 1990-02-06 | 1992-04-21 | Nalco Chemical Company | Alumina crystal growth additive |
ES2103299T3 (en) * | 1990-06-25 | 1997-09-16 | Nalco Australia Pty Limited | CRYSTAL GROWTH MODIFICATION. |
US5118484A (en) * | 1990-08-17 | 1992-06-02 | Alcan International Limited | Desilication of bayer process solutions |
US5387405A (en) * | 1992-03-25 | 1995-02-07 | Nalco Chemical Company | Bayer liquor polishing |
US5217620A (en) * | 1992-11-23 | 1993-06-08 | Nalco Chemical Company | Clarification aid for the Bayer process |
FR2708587B1 (en) * | 1993-07-29 | 1995-09-01 | Snf Sa | Process for thinning aqueous suspensions of red mud in the manufacture of alumina by the Bayer technique. |
US5346628A (en) * | 1993-10-29 | 1994-09-13 | Nalco Chemical Company | Polymers for flocculating red mud from bayer process liquors |
US5711923A (en) * | 1994-03-25 | 1998-01-27 | Nalco Chemical Company | Hydroxymethyl diphosphonated polyacrylates for red mud treatment |
US5534235A (en) * | 1995-09-05 | 1996-07-09 | Nalco Chemical Company | Polymers containing phosphonic acid groups for the treatment of red mud in the Bayer process |
US5679221A (en) * | 1994-08-26 | 1997-10-21 | Westvaco Corporation | Method for aluminum reduction in recycled pulp and paper |
US5478477A (en) * | 1994-11-04 | 1995-12-26 | Nalco Chemical Company | Use of alginates to treat bauxite red mud |
AU707514B2 (en) * | 1995-04-05 | 1999-07-15 | Nalco Chemical Company | Biopolymer use as a sand filter aid |
US5837215A (en) * | 1995-07-26 | 1998-11-17 | Nalco Chemical Company | Method of removing insoluble materials from bayer process with fatty acid and fatty acid free polymer flocculants |
US6210585B1 (en) | 1995-07-26 | 2001-04-03 | Nalco Chemical Company | Fatty acid free latex polymer flocculants |
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 |
AUPP084997A0 (en) * | 1997-12-11 | 1998-01-08 | Nalco Chemical Company | Improvements relating to the bayer process |
US6036869A (en) * | 1997-12-12 | 2000-03-14 | Nalco Chemical Company | Water continuous methyl acrylate emulsion polymers for improved flocculation of red mud in the Bayer process |
US6048463A (en) * | 1997-12-12 | 2000-04-11 | Nalco Chemical Company | Water continuous methyl acrylate emulsion polymer combinations and methyl acrylate emulsion homopolymers for improved flocculation of red mud in the bayer process |
US6086771A (en) * | 1997-12-12 | 2000-07-11 | Nalco Chemical Company | Water continuous emulsion polymers for improving scale control in the bayer process |
AU755418B2 (en) * | 1998-05-25 | 2002-12-12 | Nalco Chemical Company | Dextran, starch and flocculant combination for improving red mud clarification |
AUPP370498A0 (en) * | 1998-05-25 | 1998-06-18 | Nalco Chemical Company | Dextran, starch and flocculant combination for improving red mud clarification |
US6726845B1 (en) | 1998-05-25 | 2004-04-27 | Ondeo Nalco Company | Dextran starch and flocculant combination for improving red mud clarification |
US6372882B1 (en) | 2000-04-03 | 2002-04-16 | Nalco Chemical Company | Method for producing substantially dry water-insoluble polymers for improved flocculation in the bayer process |
US8971913B2 (en) * | 2003-06-27 | 2015-03-03 | Qualcomm Incorporated | Method and apparatus for wireless network hybrid positioning |
CN101538058B (en) * | 2008-03-19 | 2010-12-29 | 中国科学院过程工程研究所 | Low-temperature low-pressure hydro chemical method for recovering aluminum oxide and sodium oxide from red mud |
US8252266B2 (en) | 2010-08-09 | 2012-08-28 | Nalco Company | Recovery of alumina trihydrate during the bayer process using scleroglucan |
US8298508B2 (en) | 2010-08-09 | 2012-10-30 | Nalco Company | Recovery of alumina trihydrate during the bayer process using cross-linked polysaccharides |
US9199855B2 (en) | 2010-08-09 | 2015-12-01 | Nalco Company | Chemical treatment to improve red mud separation and washing in the bayer process |
US9174852B2 (en) | 2010-08-09 | 2015-11-03 | Nalco Company | Methods to improve filtration for the Bayer process |
US9102995B2 (en) | 2010-08-09 | 2015-08-11 | Nalco Company | Cross-linked ethylsulfonated dihydroxypropyl cellulose |
WO2012031316A1 (en) * | 2010-09-06 | 2012-03-15 | Alcoa Of Australia Limited | Method of increasing the stability of a bayer process liquor |
EP2686458A4 (en) | 2011-03-18 | 2015-04-15 | Orbite Aluminae Inc | Processes for recovering rare earth elements from aluminum-bearing materials |
EP3141621A1 (en) | 2011-05-04 | 2017-03-15 | Orbite Aluminae Inc. | Processes for recovering rare earth elements from various ores |
BR112013030819A2 (en) | 2011-06-03 | 2019-09-24 | Orbite Aluminae Inc | method for separating ferror ions from aluminum ions contained in an aqueous composition and method for preparing hematite |
US9382600B2 (en) | 2011-09-16 | 2016-07-05 | Orbite Technologies Inc. | Processes for preparing alumina and various other products |
CA2857574C (en) | 2012-01-10 | 2015-03-24 | Orbite Aluminae Inc. | Processes for treating red mud |
CA2903512C (en) | 2012-03-29 | 2017-12-05 | Orbite Technologies Inc. | Processes for treating fly ashes |
AU2013231168B2 (en) | 2012-04-26 | 2015-05-14 | Showa Denko K.K. | Washing method of goethite-containing red mud |
CN102718238A (en) * | 2012-06-21 | 2012-10-10 | 中国铝业股份有限公司 | Washing, settling and separation method for Bayer red mud |
US9290828B2 (en) | 2012-07-12 | 2016-03-22 | Orbite Technologies Inc. | Processes for preparing titanium oxide and various other products |
BR112015006536A2 (en) | 2012-09-26 | 2017-08-08 | Orbite Aluminae Inc | processes for preparing alumina and magnesium chloride by hcl leaching of various materials. |
CN104768627B (en) * | 2012-10-29 | 2017-03-22 | 纳尔科公司 | Methods to improve filtration for the bayer process |
WO2014075173A1 (en) | 2012-11-14 | 2014-05-22 | Orbite Aluminae Inc. | Methods for purifying aluminium ions |
EP2938575B1 (en) * | 2012-12-28 | 2021-01-20 | Nalco Company | Chemical treatment to improve red mud separation and washing in the bayer process |
US10427950B2 (en) * | 2015-12-04 | 2019-10-01 | Ecolab Usa Inc. | Recovery of mining processing product using boronic acid-containing polymers |
CN115448339A (en) * | 2022-08-29 | 2022-12-09 | 中铝郑州有色金属研究院有限公司 | Crude liquid purifying agent, preparation method thereof and application method thereof in alumina production process |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3085853A (en) * | 1958-12-23 | 1963-04-16 | Dow Chemical Co | Method of employing dextrans |
US3397953A (en) * | 1965-03-04 | 1968-08-20 | Atlas Chem Ind | Flocculating agent |
US3390959A (en) * | 1965-04-30 | 1968-07-02 | Nalco Chemical Co | Process of making alumina |
US3445187A (en) * | 1966-05-25 | 1969-05-20 | Nalco Chemical Co | Process for separation of red mud from dissolved alumina |
CA825234A (en) * | 1966-06-06 | 1969-10-14 | G. Flock Howard | Flocculation and filtration of alumina trihydrate |
GB1154993A (en) * | 1967-01-18 | 1969-06-11 | Colonial Sugar Refining Co | Improvements in a process for the preparation of High Viscosity Gums |
US3541009A (en) * | 1968-12-18 | 1970-11-17 | Nalco Chemical Co | Polymer-polysaccharide-caustic alkali compositions and process of separating solids from aqueous suspensions therewith |
US3681012A (en) * | 1969-06-17 | 1972-08-01 | Nalco Chemical Co | Process for making alumina |
JPS4929080B1 (en) * | 1970-08-24 | 1974-08-01 | ||
GB1439057A (en) * | 1973-10-10 | 1976-06-09 | Allied Colloids Ltd | Flocculating agents for alkaline systems |
US4545902A (en) * | 1984-09-17 | 1985-10-08 | Nalco Chemical Company | Flocculants for bauxite (red mud) |
US4608237A (en) * | 1985-04-24 | 1986-08-26 | Nalco Chemical Company | Use of polymers in alumina precipitation in the Bayer process of bauxite beneficiation |
GB8519107D0 (en) * | 1985-07-29 | 1985-09-04 | Allied Colloids Ltd | Flocculation process |
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 |
-
1988
- 1988-10-14 GB GB888824176A patent/GB8824176D0/en active Pending
-
1989
- 1989-10-12 CA CA002000515A patent/CA2000515C/en not_active Expired - Fee Related
- 1989-10-13 EP EP89310550A patent/EP0367437B1/en not_active Expired
- 1989-10-13 US US07/421,165 patent/US5008089A/en not_active Expired - Lifetime
- 1989-10-13 ES ES198989310550T patent/ES2034647T3/en not_active Expired - Lifetime
- 1989-10-13 DE DE8989310550T patent/DE68902625T2/en not_active Expired - Fee Related
- 1989-10-13 AU AU42895/89A patent/AU625642B2/en not_active Ceased
- 1989-11-01 HU HU895636A patent/HU204734B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091159A (en) * | 1991-06-10 | 1992-02-25 | Nalco Chemical Company | Use of dextran as a filtration aid for thickener overflow filtration in Kelly filters in the Bayer process |
Also Published As
Publication number | Publication date |
---|---|
HU895636D0 (en) | 1990-01-28 |
HUT55318A (en) | 1991-05-28 |
AU4289589A (en) | 1990-04-26 |
CA2000515C (en) | 2000-01-25 |
HU204734B (en) | 1992-02-28 |
EP0367437A1 (en) | 1990-05-09 |
GB8824176D0 (en) | 1988-11-23 |
US5008089A (en) | 1991-04-16 |
DE68902625T2 (en) | 1993-04-15 |
AU625642B2 (en) | 1992-07-16 |
DE68902625D1 (en) | 1992-10-01 |
EP0367437B1 (en) | 1992-08-26 |
ES2034647T3 (en) | 1993-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |