IE811647L - Alumina recovery. - Google Patents
Alumina recovery.Info
- Publication number
- IE811647L IE811647L IE811647A IE164781A IE811647L IE 811647 L IE811647 L IE 811647L IE 811647 A IE811647 A IE 811647A IE 164781 A IE164781 A IE 164781A IE 811647 L IE811647 L IE 811647L
- Authority
- IE
- Ireland
- Prior art keywords
- acrylic acid
- molar percent
- recovery circuit
- acrylates
- acrylate
- Prior art date
Links
- 238000011084 recovery Methods 0.000 title abstract 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title abstract 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 abstract 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 2
- 239000000178 monomer Substances 0.000 abstract 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract 1
- 238000004131 Bayer process Methods 0.000 abstract 1
- 229920002472 Starch Polymers 0.000 abstract 1
- 239000007900 aqueous suspension Substances 0.000 abstract 1
- 229920001519 homopolymer Polymers 0.000 abstract 1
- 235000019698 starch Nutrition 0.000 abstract 1
- 239000008107 starch Substances 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
- C01F7/0646—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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Aqueous suspensions of red mud are effectively removed from the Bayer process for making alumina by the addition to at least the first stage of the recovery circuit of a flocculant selected from starch, homopolymers of acrylic acid or acrylates, copolymers of acrylic acid or acrylates containing at least 80 molar percent acrylic acid or acrylate monomers and combinations thereof and subsequent addition to later, more dilute stages in the recovery circuit of a copolymer containing from about 35 to 75 molar percent of acrylic acid or acrylate and from about 65 to 25 molar percent of acrylamide monomers.
[GB2080272A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17161680A | 1980-07-23 | 1980-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE811647L true IE811647L (en) | 1982-01-23 |
| IE51418B1 IE51418B1 (en) | 1986-12-24 |
Family
ID=22624471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE1647/81A IE51418B1 (en) | 1980-07-23 | 1981-07-22 | Process for alumina recovery |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5751117A (en) |
| AU (1) | AU7319781A (en) |
| BR (1) | BR8104729A (en) |
| CA (1) | CA1176031A (en) |
| DE (1) | DE3129019A1 (en) |
| ES (1) | ES8204397A1 (en) |
| FR (1) | FR2487325A1 (en) |
| GB (1) | GB2080272B (en) |
| GR (1) | GR81418B (en) |
| HU (1) | HU186395B (en) |
| IE (1) | IE51418B1 (en) |
| IT (1) | IT1195978B (en) |
| YU (1) | YU43029B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU536264B2 (en) * | 1980-07-23 | 1984-05-03 | Cytec Technology Corp. | Process for alumina recovery |
| US4545902A (en) * | 1984-09-17 | 1985-10-08 | Nalco Chemical Company | Flocculants for bauxite (red mud) |
| 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 |
| JPH03122694U (en) * | 1990-03-20 | 1991-12-13 | ||
| 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. |
| 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 |
| 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 |
| GB0029077D0 (en) * | 2000-11-29 | 2001-01-10 | Ciba Spec Chem Water Treat Ltd | Flocculation of mineral suspensions |
| GB0103192D0 (en) * | 2001-02-09 | 2001-03-28 | Ciba Spec Chem Water Treat Ltd | Scale removal or prevention |
| JP5358040B1 (en) * | 2012-04-26 | 2013-12-04 | 昭和電工株式会社 | Cleaning method of red mud containing goethite |
| WO2020089271A1 (en) | 2018-10-31 | 2020-05-07 | Basf Se | Enhanced dewatering of mining tailings employing chemical pre-treatment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JPS4837678B1 (en) * | 1969-04-17 | 1973-11-13 | ||
| NL6906483A (en) * | 1969-04-30 | 1970-10-27 | ||
| JPS4929080B1 (en) * | 1970-08-24 | 1974-08-01 | ||
| GB1378981A (en) * | 1972-01-13 | 1975-01-02 | Nalco Chemical Co | Process for the separation of red mud from alumina solutions |
| GB1439057A (en) * | 1973-10-10 | 1976-06-09 | Allied Colloids Ltd | Flocculating agents for alkaline systems |
| US4083925A (en) * | 1976-03-22 | 1978-04-11 | Martin Marietta Aluminum, Inc. | Method for removing ferrous iron from alkali metal aluminate liquor |
-
1981
- 1981-06-09 CA CA000379321A patent/CA1176031A/en not_active Expired
- 1981-07-17 GB GB8122135A patent/GB2080272B/en not_active Expired
- 1981-07-22 IT IT48957/81A patent/IT1195978B/en active
- 1981-07-22 GR GR65583A patent/GR81418B/el unknown
- 1981-07-22 FR FR8114249A patent/FR2487325A1/en active Granted
- 1981-07-22 YU YU1812/81A patent/YU43029B/en unknown
- 1981-07-22 BR BR8104729A patent/BR8104729A/en not_active IP Right Cessation
- 1981-07-22 IE IE1647/81A patent/IE51418B1/en not_active IP Right Cessation
- 1981-07-22 AU AU73197/81A patent/AU7319781A/en not_active Abandoned
- 1981-07-22 DE DE19813129019 patent/DE3129019A1/en active Granted
- 1981-07-22 JP JP56113777A patent/JPS5751117A/en active Granted
- 1981-07-22 ES ES504178A patent/ES8204397A1/en not_active Expired
- 1981-07-23 HU HU812156A patent/HU186395B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GR81418B (en) | 1984-12-11 |
| GB2080272A (en) | 1982-02-03 |
| ES8204397A1 (en) | 1982-07-16 |
| AU7319781A (en) | 1982-01-28 |
| DE3129019C2 (en) | 1993-08-26 |
| YU181281A (en) | 1983-10-31 |
| IE51418B1 (en) | 1986-12-24 |
| IT1195978B (en) | 1988-11-03 |
| CA1176031A (en) | 1984-10-16 |
| YU43029B (en) | 1989-02-28 |
| ES504178A0 (en) | 1982-05-16 |
| GB2080272B (en) | 1984-06-13 |
| JPH024532B2 (en) | 1990-01-29 |
| FR2487325A1 (en) | 1982-01-29 |
| DE3129019A1 (en) | 1982-03-18 |
| BR8104729A (en) | 1982-04-13 |
| HU186395B (en) | 1985-07-29 |
| JPS5751117A (en) | 1982-03-25 |
| FR2487325B1 (en) | 1985-04-26 |
| IT8148957A0 (en) | 1981-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Patent lapsed |