BR9914732A - Método e aparelho para precipitação e para classificação de sólidos em altas concentrações - Google Patents
Método e aparelho para precipitação e para classificação de sólidos em altas concentraçõesInfo
- Publication number
- BR9914732A BR9914732A BR9914732-7A BR9914732A BR9914732A BR 9914732 A BR9914732 A BR 9914732A BR 9914732 A BR9914732 A BR 9914732A BR 9914732 A BR9914732 A BR 9914732A
- Authority
- BR
- Brazil
- Prior art keywords
- precipitation
- fine particles
- zone
- solids
- classification
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 5
- 238000001556 precipitation Methods 0.000 title abstract 5
- 239000007787 solid Substances 0.000 title abstract 3
- 239000010419 fine particle Substances 0.000 abstract 4
- 239000002002 slurry Substances 0.000 abstract 3
- 239000002244 precipitate Substances 0.000 abstract 2
- 238000004131 Bayer process Methods 0.000 abstract 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011362 coarse particle Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000012452 mother liquor Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 229910001388 sodium aluminate Inorganic materials 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
- C01F7/14—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)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Paper (AREA)
Abstract
Patente de Invenção: "MéTODO E APARELHO PARA PRECIPITAçãO E PARA CLASSIFICAçãO DE SóLIDOS EM ALTAS CONCENTRAçõES". Um método de formação e de classificação de um precipitado que contém partículas grandes, grosseiras e finas a partir de uma pasta fluida mãe de precipitação supersaturada, por exemplo, aluminato de sódio do processo da Bayer. O método compreende a separação da pasta fluida mãe de precipitação em uma pluralidade de fluxos separados, a introdução de cada fluxo em um vaso provido com uma zona inferior agitada e com uma zona superior quiescente, para a formação do precipitado, com as partículas grandes e grosseiras permanecendo como uma pasta fluida na zona inferior agitada e as partículas finas migrando para a zona quiescente, a remoção da pasta fluida de produto da zona inferior agitada, e a remoção do licor gasto contendo as partículas finas da zona superior quiescente. A invenção também provê um aparelho para a realização do método. A precipitação e a classificação parcial combinadas (separação de partículas finas) torna possível lidar com altas cargas de sólidos, crescentemente encontradas em processos industriais.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/178,022 US6217622B1 (en) | 1998-10-22 | 1998-10-22 | Method and apparatus for precipitating and classifying solids in high concentrations |
| PCT/CA1999/000976 WO2000024675A1 (en) | 1998-10-22 | 1999-10-20 | Method and apparatus for precipitating and classifying solids in high concentrations |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BR9914732A true BR9914732A (pt) | 2001-11-06 |
| BR9914732B1 BR9914732B1 (pt) | 2008-11-18 |
Family
ID=22650853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI9914732-7A BR9914732B1 (pt) | 1998-10-22 | 1999-10-20 | mÉtodo para a formaÇço e para a classificaÇço parcial de um precipitado, mÉtodo de produÇço de um produto de hidrato de alumina e aparelho para a formaÇço e para classificaÇço de um precipitado. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6217622B1 (pt) |
| EP (1) | EP1124759B1 (pt) |
| AU (1) | AU760667B2 (pt) |
| BR (1) | BR9914732B1 (pt) |
| ES (1) | ES2185404T3 (pt) |
| MY (1) | MY130798A (pt) |
| WO (1) | WO2000024675A1 (pt) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2771081B1 (fr) * | 1997-11-17 | 1999-12-17 | Pechiney Aluminium | Production de trihydrate d'alumine avec controle separe de la teneur en sodium et de la granulometrie |
| 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 |
| AU2002301811B2 (en) * | 2001-11-07 | 2007-08-23 | Sumitomo Chemical Company, Limited | Aluminum hydroxide aggregated particles, process for producing the same, vessel used therefor, and process for producing aluminum hydroxide powder |
| RU2255044C1 (ru) * | 2004-03-09 | 2005-06-27 | Открытое акционерное общество "ВСЕРОССИЙСКИЙ АЛЮМИНИЕВО- МАГНИЕВЫЙ ИНСТИТУТ" | Способ классификации гидроксида алюминия |
| GB0413511D0 (en) * | 2004-06-17 | 2004-07-21 | Accentus Plc | Precipitation of gibbsite from a bayer liquor |
| US7976821B2 (en) * | 2005-06-23 | 2011-07-12 | Nalco Company | Composition and method for improved aluminum hydroxide production |
| US7976820B2 (en) * | 2005-06-23 | 2011-07-12 | Nalco Company | Composition and method for improved aluminum hydroxide production |
| CN100383046C (zh) * | 2005-07-18 | 2008-04-23 | 贵阳铝镁设计研究院 | 提高原矿浆固含的工艺方法 |
| RU2305101C2 (ru) * | 2005-10-21 | 2007-08-27 | Открытое акционерное общество "РУСАЛ Всероссийский Алюминиево-магниевый Институт"(ОАО "РУСАЛ ВАМИ") | Способ разложения алюминатных растворов карбонизацией |
| RU2424980C2 (ru) * | 2009-02-25 | 2011-07-27 | Открытое акционерное общество "РУСАЛ Всероссийский Алюминиево-магниевый Институт" | Способ карбонизации алюминатных растворов |
| RU2450066C1 (ru) * | 2011-03-11 | 2012-05-10 | Виктор Григорьевич Оголь | Способ переработки нефелиновых руд для получения глинозема и содопродуктов |
| CN102583474B (zh) * | 2012-01-20 | 2014-08-27 | 贵州省新材料研究开发基地 | 过饱和铝酸钠溶液晶种分解生产氢氧化铝的工艺方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653858A (en) | 1951-09-22 | 1953-09-29 | Aluminum Co Of America | Precipitation of aluminum hydroxide |
| US3632310A (en) * | 1967-10-23 | 1972-01-04 | Arthur F Johnson | Process for manufacturing alumina |
| US3649184A (en) | 1969-05-29 | 1972-03-14 | Reynolds Metals Co | Precipitation of alumina hydrate |
| NO135059C (pt) | 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 |
| DE3269635D1 (en) * | 1982-09-02 | 1986-04-10 | Alcoa Chemie Gmbh | Process for the production of alumine |
| US4511542A (en) * | 1984-05-24 | 1985-04-16 | Kaiser Aluminum & Chemical Corporation | Bayer process production of alumina hydrate |
| FR2598701B1 (fr) | 1986-05-15 | 1988-08-05 | Pechiney Aluminium | Procede et dispositif de decomposition de liqueur d'aluminate de sodium pour la production d'alumine |
| US5163973A (en) * | 1990-02-14 | 1992-11-17 | Alcan Internatinal Limited | Process for producing low soda alumina |
| AU633209B2 (en) | 1990-07-20 | 1993-01-21 | Alcan International Limited | Improved precipitation vessel |
| KR950700218A (ko) * | 1992-02-19 | 1995-01-16 | 더블유. 피. 데이 | 알루미나장치의 개선(improvements in alumina plants) |
-
1998
- 1998-10-22 US US09/178,022 patent/US6217622B1/en not_active Expired - Fee Related
-
1999
- 1999-10-20 BR BRPI9914732-7A patent/BR9914732B1/pt not_active IP Right Cessation
- 1999-10-20 AU AU64547/99A patent/AU760667B2/en not_active Ceased
- 1999-10-20 WO PCT/CA1999/000976 patent/WO2000024675A1/en not_active Ceased
- 1999-10-20 EP EP99952175A patent/EP1124759B1/en not_active Expired - Lifetime
- 1999-10-20 ES ES99952175T patent/ES2185404T3/es not_active Expired - Lifetime
- 1999-10-21 MY MYPI99004549A patent/MY130798A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000024675A1 (en) | 2000-05-04 |
| ES2185404T3 (es) | 2003-04-16 |
| MY130798A (en) | 2007-07-31 |
| EP1124759B1 (en) | 2002-12-18 |
| BR9914732B1 (pt) | 2008-11-18 |
| AU6454799A (en) | 2000-05-15 |
| AU760667B2 (en) | 2003-05-22 |
| US6217622B1 (en) | 2001-04-17 |
| EP1124759A1 (en) | 2001-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
| B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
| B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
| B09W | Correction of the decision to grant [chapter 9.1.4 patent gazette] | ||
| B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/10/1999, OBSERVADAS AS CONDICOES LEGAIS. |
|
| B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE A 17A ANUIDADE. |
|
| B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2385 DE 20-09-2016 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |