BR9609429A - High-yield precipitation process. - Google Patents
High-yield precipitation process.Info
- Publication number
- BR9609429A BR9609429A BR9609429-0A BR9609429A BR9609429A BR 9609429 A BR9609429 A BR 9609429A BR 9609429 A BR9609429 A BR 9609429A BR 9609429 A BR9609429 A BR 9609429A
- Authority
- BR
- Brazil
- Prior art keywords
- precipitation
- fluid
- stage
- precipitation process
- mass
- Prior art date
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
- C01F7/06—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
-
- 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
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
<B>PROCESSO DE PRECIPITAçãO DE ALTO REDIMENTO<D>, para precipitar triidrato de alumina a partir de uma solução cáustica saturada compreendendo o fornecimento da solução cáustica saturada (10) a um estágio de precipitação de uma fábrica de Bayer. O estágio de precipitação inclui um estágio de aglomeração (A1, A2) e um estágio de crescimento (G1, G2... G último). A precipitação do triidrato de alumína ocorre no estágio para formar uma massa fluida da triidrato precipitado na solução cáustica. Durante o processo de precipitação, a massa fluida é diluída através da adição de um fluido aquoso (115). Este dilui a concentração cáustica da solução na massa, o que aumenta a força de iniciação da precipitação, aumentando desta forma os rendimentos do processo de precipitação. O fluido de diluição pode ser adicionado à massa fluida como um fluido único ou como uma pluralidade de fluidos.<B> HIGH REDUCTION PRECIPITATION PROCESS <D>, to precipitate alumina trihydrate from a saturated caustic solution comprising supplying the saturated caustic solution (10) to a precipitation stage at a Bayer plant. The precipitation stage includes an agglomeration stage (A1, A2) and a growth stage (G1, G2 ... G last). The precipitation of the alumine trihydrate occurs at the stage to form a fluid mass of the trihydrate precipitated in the caustic solution. During the precipitation process, the fluid mass is diluted by the addition of an aqueous fluid (115). This dilutes the caustic concentration of the solution in the mass, which increases the precipitation initiation force, thereby increasing the yields of the precipitation process. The dilution fluid can be added to the fluid mass as a single fluid or as a plurality of fluids.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPN4107A AUPN410795A0 (en) | 1995-07-11 | 1995-07-11 | High yield precipitation process |
| AUPN4785A AUPN478595A0 (en) | 1995-08-14 | 1995-08-14 | High yield precipitation process |
| PCT/AU1996/000435 WO1997003022A1 (en) | 1995-07-11 | 1996-07-11 | High yield precipitation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9609429A true BR9609429A (en) | 2000-04-25 |
Family
ID=25644991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9609429-0A BR9609429A (en) | 1995-07-11 | 1996-07-11 | High-yield precipitation process. |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0839118A4 (en) |
| KR (1) | KR19990028922A (en) |
| BR (1) | BR9609429A (en) |
| CA (1) | CA2226842A1 (en) |
| WO (1) | WO1997003022A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0808611A2 (en) * | 2007-03-27 | 2014-08-05 | Alcoa Australia | "METHOD FOR PREPARING ALUMINUM OXIDE FROM A BAYER SOLUTION" |
| WO2018194397A1 (en) * | 2017-04-19 | 2018-10-25 | 한국지질자원연구원 | Method for smelting ilmenite using red mud |
| CN113608506B (en) * | 2021-06-18 | 2022-10-25 | 东北大学 | Intelligent detection device for alumina operation index |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US4051222A (en) * | 1971-09-21 | 1977-09-27 | Alcan Research And Development Limited | Coarsening of partially calcined alumina dust |
| NO135059C (en) * | 1975-04-16 | 1977-02-02 | Norsk Hydro As | |
| US4305913A (en) * | 1980-08-06 | 1981-12-15 | Kaiser Aluminum & Chemical Corporation | Alumina hydrate production from Bayer liquor by seeding |
| FR2591581B1 (en) * | 1985-12-17 | 1990-05-25 | Pechiney Aluminium | PROCESS FOR OBTAINING HIGH PRODUCTIVITY OF ALUMINUM TRIHYDROXIDE, HIGH PURITY AND MEDIAN DIAMETER LESS THAN 4 MICROMETERS, ADJUSTED ON REQUEST. |
| HU201276B (en) * | 1988-10-27 | 1990-10-28 | Magyar Aluminium | Process for producing alum earth from bauxite containing gibbsite |
| FR2712275B1 (en) * | 1993-11-09 | 1995-12-15 | Pechiney Aluminium | Process for the treatment of bauxites containing a mixture of alumina trihydrate and alumina monohydrate. |
-
1996
- 1996-07-11 KR KR1019980700224A patent/KR19990028922A/en not_active Application Discontinuation
- 1996-07-11 WO PCT/AU1996/000435 patent/WO1997003022A1/en not_active Application Discontinuation
- 1996-07-11 EP EP96922684A patent/EP0839118A4/en not_active Withdrawn
- 1996-07-11 BR BR9609429-0A patent/BR9609429A/en not_active Application Discontinuation
- 1996-07-11 CA CA002226842A patent/CA2226842A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0839118A4 (en) | 1998-12-09 |
| WO1997003022A1 (en) | 1997-01-30 |
| KR19990028922A (en) | 1999-04-15 |
| EP0839118A1 (en) | 1998-05-06 |
| CA2226842A1 (en) | 1997-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD5 | Application fees: dismissal - article 86 of industrial property law | ||
| HIX | Notification cancelled | ||
| FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
| B11B | Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements |