FR2425405A1 - Procede de separation d'un precipite d'hydroxyde d'aluminium d'une solution d'aluminate de sodium - Google Patents
Procede de separation d'un precipite d'hydroxyde d'aluminium d'une solution d'aluminate de sodiumInfo
- Publication number
- FR2425405A1 FR2425405A1 FR7911508A FR7911508A FR2425405A1 FR 2425405 A1 FR2425405 A1 FR 2425405A1 FR 7911508 A FR7911508 A FR 7911508A FR 7911508 A FR7911508 A FR 7911508A FR 2425405 A1 FR2425405 A1 FR 2425405A1
- Authority
- FR
- France
- Prior art keywords
- germ
- aluminum hydroxide
- caustic
- sodium
- sodium aluminate
- 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
-
- 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
-
- 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
- C01F7/148—Separation of the obtained hydroxide, e.g. by filtration or dewatering
Abstract
L'INVENTION CONCERNE UN PERFECTIONNEMENT DE LA PRODUCTION D'ALUMINE PAR LE PROCEDE BAYER A PARTIR DE ROCHES CONTENANT DE L'ALUMINE. LE PROCEDE DE L'INVENTION PERMET DE RECUPERER EFFICACEMENT ET DE FACON ECONOMIQUE LES COMPOSANTS CAUSTIQUES ESSENTIELLEMENT FORMES D'ALUMINATE DE SODIUM DE GATEAUX D'HYDROXYDE D'ALUMINIUM UTILISES COMME GERME, SEPARES DE L'HYDROXYDE D'ALUMINIUM OBTENU COMME PRODUIT. LE GERME EST LAVE AVEC UNE LIQUEUR DE LAVAGE CONTENANT DE L'OXALATE DE SODIUM A UNE CONCENTRATION DE L'ORDRE DE LA SATURATION ET CONTENANT UN PEU DE SUBSTANCE CAUSTIQUE, PUIS LES MATIERES ORGANIQUES TELLES QUE L'OXALATE DE SODIUM SONT ELIMINEES DU GERME LAVE PAR UN SECOND LAVAGE DE CE GERME A L'EAU CHAUDE, DE MANIERE A RECUPERER LES COMPOSANTS CAUSTIQUES SANS DISSOUDRE L'OXALATE DE SODIUM DU GERME DANS LA SOLUTION CAUSTIQUE RECUPEREE, L'ELIMINATION DE L'OXALATE DE SODIUM PRESENT COMME IMPURETE ETANT OBTENUE DE FACON TRES EFFICACE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53054803A JPS603005B2 (ja) | 1978-05-08 | 1978-05-08 | アルミン酸ソ−ダ溶液より析出水酸化アルミニウムを分離する方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2425405A1 true FR2425405A1 (fr) | 1979-12-07 |
FR2425405B1 FR2425405B1 (fr) | 1981-02-13 |
Family
ID=12980888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7911508A Granted FR2425405A1 (fr) | 1978-05-08 | 1979-05-07 | Procede de separation d'un precipite d'hydroxyde d'aluminium d'une solution d'aluminate de sodium |
Country Status (8)
Country | Link |
---|---|
US (1) | US4201749A (fr) |
JP (1) | JPS603005B2 (fr) |
AU (1) | AU514212B2 (fr) |
CA (1) | CA1097483A (fr) |
DE (1) | DE2918520A1 (fr) |
FR (1) | FR2425405A1 (fr) |
GB (1) | GB2020642B (fr) |
IT (1) | IT1118493B (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4443416A (en) * | 1983-04-18 | 1984-04-17 | Kaiser Aluminum & Chemical Corporation | Purification of bayer process liquors |
US4595581A (en) * | 1984-12-10 | 1986-06-17 | Aluminum Company Of America | Boehmite production by precipitation from sodium aluminate solution at elevated temperatures |
US4999170A (en) * | 1988-06-03 | 1991-03-12 | Vereinigte Aluminum-Werke Aktiendesellschaft | Method for removing sodium oxalate from caustic aluminate liquors |
US5106599A (en) * | 1990-02-06 | 1992-04-21 | Nalco Chemical Company | Alumina crystal growth additive |
CN1232443C (zh) * | 2001-05-18 | 2005-12-21 | 北京化工大学 | 一种超细的改性氢氧化铝及其制备方法 |
CN106093019A (zh) * | 2016-05-31 | 2016-11-09 | 贵州大学 | 一种分析铝酸钠溶液中有机物含量的方法 |
CN112047367B (zh) * | 2020-09-09 | 2022-06-03 | 中国铝业股份有限公司 | 高活性氢氧化铝晶体、低锌氢氧化铝及其制备方法、氧化铝 |
CN112194160B (zh) * | 2020-09-30 | 2021-06-29 | 洛阳中超新材料股份有限公司 | 一种超细氢氧化铝用铝酸钠溶液的脱色方法 |
CN113184889B (zh) * | 2021-03-22 | 2023-01-20 | 中国铝业股份有限公司 | 一种氧化铝生产中结晶草酸钠渣的综合利用方法 |
CN115282818B (zh) * | 2022-08-18 | 2023-08-04 | 河津市炬华铝业有限公司 | 一种氢氧化铝制备生产用搅洗装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3372985A (en) * | 1963-02-20 | 1968-03-12 | Kaiser Aluminium Chem Corp | Process for removing impurities from the precipitation system of the bayer process |
US3649185A (en) * | 1967-08-23 | 1972-03-14 | Showa Denko Kk | Method for removing impurities in the bayer process |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2707669A (en) * | 1951-02-06 | 1955-05-03 | Kaiser Aluminium Chem Corp | Alumina production |
US2935376A (en) * | 1957-04-08 | 1960-05-03 | Kaiser Aluminium Chem Corp | Process of precipitating alumina hydrate from a pregnant caustic aluminate liquor |
US3486850A (en) * | 1967-02-16 | 1969-12-30 | Kaiser Aluminium Chem Corp | Flash cooling of liquor during the continuous precipitation of alumina hydrate from bayer process liquor |
US3838980A (en) * | 1972-01-12 | 1974-10-01 | Alcan Res & Dev | Precipitation of bayer alumina trihydrate suitable for the manufacture of ceramic grade alumina of improved grindability |
FR2317226A1 (fr) * | 1975-07-07 | 1977-02-04 | Alcan Res & Dev | Perfectionnements a la production d'alumine |
-
1978
- 1978-05-08 JP JP53054803A patent/JPS603005B2/ja not_active Expired
-
1979
- 1979-05-03 AU AU46638/79A patent/AU514212B2/en not_active Expired
- 1979-05-04 GB GB7915603A patent/GB2020642B/en not_active Expired
- 1979-05-07 IT IT67959/79A patent/IT1118493B/it active
- 1979-05-07 FR FR7911508A patent/FR2425405A1/fr active Granted
- 1979-05-08 CA CA327,196A patent/CA1097483A/fr not_active Expired
- 1979-05-08 DE DE19792918520 patent/DE2918520A1/de active Granted
- 1979-05-08 US US06/037,145 patent/US4201749A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3372985A (en) * | 1963-02-20 | 1968-03-12 | Kaiser Aluminium Chem Corp | Process for removing impurities from the precipitation system of the bayer process |
US3649185A (en) * | 1967-08-23 | 1972-03-14 | Showa Denko Kk | Method for removing impurities in the bayer process |
Also Published As
Publication number | Publication date |
---|---|
AU4663879A (en) | 1979-11-15 |
GB2020642B (en) | 1982-08-25 |
JPS603005B2 (ja) | 1985-01-25 |
IT1118493B (it) | 1986-03-03 |
JPS54146299A (en) | 1979-11-15 |
US4201749A (en) | 1980-05-06 |
DE2918520C2 (fr) | 1988-02-18 |
AU514212B2 (en) | 1981-01-29 |
CA1097483A (fr) | 1981-03-17 |
FR2425405B1 (fr) | 1981-02-13 |
GB2020642A (en) | 1979-11-21 |
DE2918520A1 (de) | 1979-11-15 |
IT7967959A0 (it) | 1979-05-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |