BRPI0512097A - processo para precipitar gibbsita de um licor bayer, e, aparelho para o mesmo - Google Patents

processo para precipitar gibbsita de um licor bayer, e, aparelho para o mesmo

Info

Publication number
BRPI0512097A
BRPI0512097A BRPI0512097-7A BRPI0512097A BRPI0512097A BR PI0512097 A BRPI0512097 A BR PI0512097A BR PI0512097 A BRPI0512097 A BR PI0512097A BR PI0512097 A BRPI0512097 A BR PI0512097A
Authority
BR
Brazil
Prior art keywords
liquor
same
bayer
crystal
gibbsite
Prior art date
Application number
BRPI0512097-7A
Other languages
English (en)
Inventor
Martin Fennell
Linda Jane
Original Assignee
Accentus Plc
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 by Accentus Plc filed Critical Accentus Plc
Publication of BRPI0512097A publication Critical patent/BRPI0512097A/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
    • 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
    • C01F7/147—Apparatus for precipitation

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)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Luminescent Compositions (AREA)

Abstract

PROCESSO PARA PRECIPITAR GIBBSITA DE UM LICOR BAYER, E, APARELHO PARA O MESMO Um licor Bayer é produzido por dissolução de bauxita em soda cáustica quente. O licor é resfriado de modo que ele fica supersaturado, e os cristais de semente de gbbsita são adicionados ao licor (16). Ao mesmo tempo, pelo menos parte do licor é submetida à irradiação ultrassónica (34) intensa de modo a causar cavitação, preferivelmente por passagem de licor e cristais de semente (28) através de um duto (30) de recirculação. O ultrassom aumenta a proporção de finos por ruptura de quaisquer aglomerados de cristal e também por geração de núcleos de cristal, e também remove a incrustação das superfícies do cristal. O processo de precipitação é conseqüentemente mais eficiente. Caso se aplique ultrassom, quando as medidas indicam que ocorrem finos insuficientes no licor, este fato melhora a consistência do processo de precipitação.
BRPI0512097-7A 2004-06-17 2005-06-17 processo para precipitar gibbsita de um licor bayer, e, aparelho para o mesmo BRPI0512097A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0413511.7A GB0413511D0 (en) 2004-06-17 2004-06-17 Precipitation of gibbsite from a bayer liquor
PCT/GB2005/050092 WO2005123589A1 (en) 2004-06-17 2005-06-17 Precipitation of gibbsite from a bayer liquor

Publications (1)

Publication Number Publication Date
BRPI0512097A true BRPI0512097A (pt) 2008-02-06

Family

ID=32750045

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0512097-7A BRPI0512097A (pt) 2004-06-17 2005-06-17 processo para precipitar gibbsita de um licor bayer, e, aparelho para o mesmo

Country Status (12)

Country Link
US (1) US20090246104A1 (pt)
EP (1) EP1768929A1 (pt)
JP (1) JP2008502569A (pt)
CN (1) CN1968892A (pt)
AP (1) AP2007003878A0 (pt)
AU (1) AU2005254317A1 (pt)
BR (1) BRPI0512097A (pt)
CA (1) CA2570223A1 (pt)
GB (1) GB0413511D0 (pt)
RU (1) RU2007101529A (pt)
WO (1) WO2005123589A1 (pt)
ZA (1) ZA200610515B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008144838A1 (en) * 2007-05-31 2008-12-04 Commonwealth Scientific And Industrial Research Organisation Method for treating residue from a bayer process
CN106999796B (zh) * 2014-10-24 2020-09-25 生命科技股份有限公司 以声学方式沉淀的液-液样品纯化系统
WO2017043588A1 (ja) * 2015-09-08 2017-03-16 日本製紙株式会社 炭酸マグネシウム微粒子の製造方法
CN110436496A (zh) * 2019-08-30 2019-11-12 贵州大学 一种利用工业铝酸钠溶液制备超细高纯氧化铝的方法
IT202000016093A1 (it) * 2020-07-03 2022-01-03 Giacomo Mencarini Procedimento per il riciclo di materiali per uso alimentare a base di alluminio

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1067674A (en) * 1962-10-25 1967-05-03 British Aluminium Co Ltd Improvements in or relating to the production of alumina trihydrate
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
EP0714852B1 (en) * 1994-11-30 1999-08-18 Billiton Intellectual Property B.V. Process for the precipitation of aluminum trihydroxide from a supersaturated sodium aluminate solution
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
US5976325A (en) * 1997-12-12 1999-11-02 Aluminum Company Of America Laser precipitation of sodium aluminate solutions
US6217622B1 (en) * 1998-10-22 2001-04-17 Alcan International Limited Method and apparatus for precipitating and classifying solids in high concentrations
GB9827360D0 (en) * 1998-12-12 1999-02-03 Aea Technology Plc Process and apparatus for irradiating fluids
PT1509301E (pt) * 2002-05-31 2007-01-31 Accentus Plc Produção de materiais cristalinos utilizando ultrassons de alta intensidade

Also Published As

Publication number Publication date
RU2007101529A (ru) 2008-08-10
ZA200610515B (en) 2008-06-25
US20090246104A1 (en) 2009-10-01
CN1968892A (zh) 2007-05-23
GB0413511D0 (en) 2004-07-21
CA2570223A1 (en) 2005-12-29
AP2007003878A0 (en) 2007-02-28
JP2008502569A (ja) 2008-01-31
AU2005254317A1 (en) 2005-12-29
EP1768929A1 (en) 2007-04-04
WO2005123589A1 (en) 2005-12-29

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Legal Events

Date Code Title Description
B25G Requested change of headquarter approved

Owner name: ACCENTUS PLC (GB)

Free format text: ANOTADAS AS ALTERACOES DE SEDE SOLICITADAS ATRAVES DA PETICAO NO 020070184946/RJ DE 28/12/2007.

B25A Requested transfer of rights approved

Owner name: PROSONIX LIMITED (GB)

Free format text: TRANSFERIDO DE: ACCENTUS PLC

B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2158 DE 15/05/2012.