BR9914732B1 - 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. - Google Patents

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.

Info

Publication number
BR9914732B1
BR9914732B1 BRPI9914732-7A BR9914732A BR9914732B1 BR 9914732 B1 BR9914732 B1 BR 9914732B1 BR 9914732 A BR9914732 A BR 9914732A BR 9914732 B1 BR9914732 B1 BR 9914732B1
Authority
BR
Brazil
Prior art keywords
precipitate
formation
classification
production
alumina hydrate
Prior art date
Application number
BRPI9914732-7A
Other languages
English (en)
Other versions
BR9914732A (pt
Inventor
Bryan Hiscox
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of BR9914732A publication Critical patent/BR9914732A/pt
Publication of BR9914732B1 publication Critical patent/BR9914732B1/pt

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)
  • Paper (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
BRPI9914732-7A 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. BR9914732B1 (pt)

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 BR9914732A (pt) 2001-11-06
BR9914732B1 true 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 (9)

* Cited by examiner, † Cited by third party
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
GB0413511D0 (en) * 2004-06-17 2004-07-21 Accentus Plc Precipitation of gibbsite from a bayer liquor
US7976820B2 (en) * 2005-06-23 2011-07-12 Nalco Company Composition and method for improved aluminum hydroxide production
US7976821B2 (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
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)

* Cited by examiner, † Cited by third party
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
EP0102403B1 (de) * 1982-09-02 1986-03-05 Alcoa Chemie GmbH Verbessertes Verfahren zur Gewinnung von Tonerde
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
WO1993016957A1 (en) * 1992-02-19 1993-09-02 Comalco Aluminium Limited Improvements in alumina plants

Also Published As

Publication number Publication date
EP1124759B1 (en) 2002-12-18
EP1124759A1 (en) 2001-08-22
AU6454799A (en) 2000-05-15
ES2185404T3 (es) 2003-04-16
AU760667B2 (en) 2003-05-22
BR9914732A (pt) 2001-11-06
WO2000024675A1 (en) 2000-05-04
MY130798A (en) 2007-07-31
US6217622B1 (en) 2001-04-17

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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.