DE69511513T2 - Verfahren zur Ausfällung von Aluminiumhydroxid aus einer übersättigten Natriumaluminatlösung - Google Patents
Verfahren zur Ausfällung von Aluminiumhydroxid aus einer übersättigten NatriumaluminatlösungInfo
- Publication number
- DE69511513T2 DE69511513T2 DE69511513T DE69511513T DE69511513T2 DE 69511513 T2 DE69511513 T2 DE 69511513T2 DE 69511513 T DE69511513 T DE 69511513T DE 69511513 T DE69511513 T DE 69511513T DE 69511513 T2 DE69511513 T2 DE 69511513T2
- Authority
- DE
- Germany
- Prior art keywords
- precipitation
- aluminum hydroxide
- sodium aluminate
- aluminate solution
- supersaturated sodium
- 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 - Lifetime
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94203488 | 1994-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69511513D1 DE69511513D1 (de) | 1999-09-23 |
DE69511513T2 true DE69511513T2 (de) | 1999-11-25 |
Family
ID=8217421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69511513T Expired - Lifetime DE69511513T2 (de) | 1994-11-30 | 1995-11-27 | Verfahren zur Ausfällung von Aluminiumhydroxid aus einer übersättigten Natriumaluminatlösung |
Country Status (6)
Country | Link |
---|---|
US (1) | US5690700A (de) |
AU (1) | AU691049B2 (de) |
BR (1) | BR9505597A (de) |
CA (1) | CA2163826C (de) |
DE (1) | DE69511513T2 (de) |
ES (1) | ES2137447T3 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09132411A (ja) * | 1995-11-02 | 1997-05-20 | Fuji Photo Film Co Ltd | 水酸化アルミニウムの精製方法及びその精製方法を利用した印刷版用支持体の表面処理方法 |
FR2782710B1 (fr) * | 1998-09-02 | 2000-10-06 | Pechiney Aluminium | Procede de controle granulometrique dans une chaine de decomposition du circuit bayer, incluant une phase d'agglomeration |
ATE405524T1 (de) * | 2002-12-05 | 2008-09-15 | Showa Denko Kk | Aluminiumhydroxid und zugehöriges herstellungsverfahren |
CN101343075B (zh) * | 2008-08-22 | 2011-01-26 | 中国铝业股份有限公司 | 铝酸钠溶液b值控制方法 |
CN103449486B (zh) * | 2013-08-29 | 2015-05-06 | 中国科学院过程工程研究所 | 一种铝酸钠溶液与碳酸氢钠液相法碳分制备一水软铝石的方法 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2347073A (en) * | 1941-06-06 | 1944-04-18 | Solvay Process Co | Process for recovering solids from solution |
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 |
FR1311147A (fr) * | 1961-05-06 | 1962-12-07 | Electro Chimie Soc D | Procédé de fabrication de l'alumine |
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 |
US3906084A (en) * | 1971-09-21 | 1975-09-16 | Alcan Res & Dev | Precipitation of alumina trihydrate from bayer pregnant liquors |
US4150952A (en) * | 1977-07-21 | 1979-04-24 | Ormet Corporation | Method of controlling the amount of seed material in the precipitation stage of the Bayer process |
CH644332A5 (de) * | 1978-11-07 | 1984-07-31 | Alusuisse | Verfahren zur herstellung von grobem aluminiumhydroxid. |
US4530699A (en) * | 1979-01-18 | 1985-07-23 | Aluminum Company Of America | Dense phase precipitation |
JPS5951489B2 (ja) * | 1979-08-13 | 1984-12-14 | 住友アルミニウム製錬株式会社 | 粗大粒子水酸化アルミニウムの製造方法 |
US4305913A (en) * | 1980-08-06 | 1981-12-15 | Kaiser Aluminum & Chemical Corporation | Alumina hydrate production from Bayer liquor by seeding |
JPS57140316A (en) * | 1981-02-20 | 1982-08-30 | Sumitomo Alum Smelt Co Ltd | Manufacture of coarse granular aluminum hydroxide |
US4511542A (en) * | 1984-05-24 | 1985-04-16 | Kaiser Aluminum & Chemical Corporation | Bayer process production of alumina hydrate |
FR2573414B1 (fr) * | 1984-11-22 | 1989-12-01 | Pechiney Aluminium | Procede de mise en oeuvre d'un amorcage en deux temps pour l'obtention d'alumine a gros grains |
US5102426A (en) * | 1990-02-14 | 1992-04-07 | Alcan International Limited | Process for precipitating alumina from bayer process liquor |
DE69324908T2 (de) * | 1992-02-19 | 2000-01-13 | Comalco Alu | Verbesserte herstellung von aluminiumoxid |
-
1995
- 1995-11-27 ES ES95203258T patent/ES2137447T3/es not_active Expired - Lifetime
- 1995-11-27 CA CA002163826A patent/CA2163826C/en not_active Expired - Fee Related
- 1995-11-27 DE DE69511513T patent/DE69511513T2/de not_active Expired - Lifetime
- 1995-11-28 US US08/563,384 patent/US5690700A/en not_active Expired - Lifetime
- 1995-11-29 AU AU39140/95A patent/AU691049B2/en not_active Ceased
- 1995-11-30 BR BR9505597A patent/BR9505597A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AU3914095A (en) | 1996-06-06 |
CA2163826C (en) | 2006-03-14 |
AU691049B2 (en) | 1998-05-07 |
BR9505597A (pt) | 1997-11-04 |
CA2163826A1 (en) | 1996-05-31 |
US5690700A (en) | 1997-11-25 |
DE69511513D1 (de) | 1999-09-23 |
ES2137447T3 (es) | 1999-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |