ES8505318A2 - Mejoras introducidas en el objeto de la patente principal n 523.929, por: un procedimiento de descomposicion de una solucion sobresaturada de aluminato alcalino - Google Patents

Mejoras introducidas en el objeto de la patente principal n 523.929, por: un procedimiento de descomposicion de una solucion sobresaturada de aluminato alcalino

Info

Publication number
ES8505318A2
ES8505318A2 ES535629A ES535629A ES8505318A2 ES 8505318 A2 ES8505318 A2 ES 8505318A2 ES 535629 A ES535629 A ES 535629A ES 535629 A ES535629 A ES 535629A ES 8505318 A2 ES8505318 A2 ES 8505318A2
Authority
ES
Spain
Prior art keywords
area
fraction
grain size
uniform grain
suspension
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
Application number
ES535629A
Other languages
English (en)
Other versions
ES535629A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9292048&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8505318(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Publication of ES535629A0 publication Critical patent/ES535629A0/es
Publication of ES8505318A2 publication Critical patent/ES8505318A2/es
Expired legal-status Critical Current

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)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)

Abstract

PROCEDIMIENTO DE DESCOMPOSICION DE UNA SOLUCION SOBRESATURADA DE ALUMINATO ALCALINO. CONSISTENTES EN: A) CREAR EN UNA DE LAS ZONAS DE DESCOMPOSICION DEL PROCEDIMIENTO BAYER, UNA ZONA DE SEPARACION (ZS) DE PARTICULAS SOLIDAS FINAS DE TRIHIDROXIDO DE AL, QUE SE ALIMENTA POR UNA PARTE DEL FLUJO L(N-1) DE SUSPENSION QUE CIRCULA EN LA ZONA DE DESCOMPOSICION; B) EXTRAER, A PARTIR DE LA ZONA DE SEPARACION DE PARTICULAS SOLIDAS FINAS, UNA FRACCION QUE CONTIENE AL MENOS 5 DEL NUMERO TOTAL DE LAS PARTICULAS FINAS PRESENTES EN EL FLUJO L(N-3) QUE CIRCULA EN LA ZONA DE DESCOMPOSICION; C) TRATAR LA FRACCION DE B) PARA DISMINUIR AL 50 EL NUMERO DE LAS PARTICULAS FINAS; Y D) RECICLAR LA FRACCION (LN-3) HASTA AL MENOS UNA ETAPA DEL PROCEDIMIENTO BAYER. MEJORA LA PATENTE PRINCIPAL Nº 523929.
ES535629A 1983-09-05 1984-09-04 Mejoras introducidas en el objeto de la patente principal n 523.929, por: un procedimiento de descomposicion de una solucion sobresaturada de aluminato alcalino Expired ES8505318A2 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8314294A FR2551429B2 (fr) 1983-09-05 1983-09-05 Procede de production d'un trihydroxyde d'aluminium de granulometrie grosse et reguliere

Publications (2)

Publication Number Publication Date
ES535629A0 ES535629A0 (es) 1985-05-16
ES8505318A2 true ES8505318A2 (es) 1985-05-16

Family

ID=9292048

Family Applications (1)

Application Number Title Priority Date Filing Date
ES535629A Expired ES8505318A2 (es) 1983-09-05 1984-09-04 Mejoras introducidas en el objeto de la patente principal n 523.929, por: un procedimiento de descomposicion de una solucion sobresaturada de aluminato alcalino

Country Status (20)

Country Link
US (1) US4614642A (es)
JP (1) JPS60502099A (es)
AU (1) AU568155B2 (es)
BR (1) BR8407055A (es)
CA (1) CA1252606A (es)
CH (1) CH662336A5 (es)
DE (1) DE3432473C3 (es)
ES (1) ES8505318A2 (es)
FR (1) FR2551429B2 (es)
GB (1) GB2146012B (es)
GR (1) GR80280B (es)
HU (1) HU200572B (es)
IE (1) IE57701B1 (es)
IT (1) IT1178508B (es)
NL (1) NL8402664A (es)
NO (1) NO851239L (es)
PH (1) PH19829A (es)
WO (1) WO1985001040A1 (es)
YU (1) YU44877B (es)
ZA (1) ZA846926B (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5163973A (en) * 1990-02-14 1992-11-17 Alcan Internatinal Limited Process for producing low soda alumina
US5158577A (en) * 1990-02-14 1992-10-27 Alcan International Limited Process for precipitating alumina from Bayer process liquor
CA2130579C (en) * 1992-02-19 2000-09-05 Gregory Patrick Brown Improvements in alumina plants
FR2709302B1 (fr) * 1993-08-26 1995-09-22 Pechiney Aluminium Procédé de fabrication de trihydrate d'alumine à teneur en sodium et granulométrie réglées.
EP0859745A1 (en) * 1995-11-07 1998-08-26 Cytec Technology Corp. Reduction of impurities in bayer process alumina trihydrate
RU2175641C2 (ru) * 1997-07-08 2001-11-10 Акционерное общество открытого типа "Всероссийский алюминиево-магниевый институт" Способ получения гидроксида алюминия
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
RU2175951C2 (ru) * 2000-02-25 2001-11-20 ОАО "Бокситогорский глинозем" Способ получения активного гидроксида алюминия
US20050126880A1 (en) * 2002-02-20 2005-06-16 Iannello Richard J. Counter/tabletop alignment note feeder
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
US9238184B2 (en) 2010-08-13 2016-01-19 Rio Tinto Alcan International Limited Apparatus and method for refining a process liquor by gravity settling
CN110127737B (zh) * 2019-07-01 2023-09-19 济源职业技术学院 拜耳法氧化铝生产中防止种分周期性细化的装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB653741A (en) * 1947-09-25 1951-05-23 Viggo Harms Improvements in and relating to a method and apparatus for precipitation of solids from solutions and the like
FR1311147A (fr) * 1961-05-06 1962-12-07 Electro Chimie Soc D Procédé de fabrication de l'alumine
NO135059C (es) * 1975-04-16 1977-02-02 Norsk Hydro As
DE2531646A1 (de) * 1975-07-15 1977-02-03 Ekato Werke Verfahren und vorrichtung zur herstellung von tonerde
GB1589012A (en) * 1977-11-15 1981-05-07 Atomenergi Inst For Processes for continuous crystallization
CH644332A5 (de) * 1978-11-07 1984-07-31 Alusuisse Verfahren zur herstellung von grobem aluminiumhydroxid.
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
DE3131088C2 (de) * 1981-08-06 1984-11-29 Vereinigte Aluminium-Werke AG, 1000 Berlin und 5300 Bonn Verfahren zur Herstellung von Aluminiumhydroxid
FR2529877A1 (fr) * 1982-07-08 1984-01-13 Pechiney Aluminium Procede de production d'un trihydroxyde d'aluminium de grosse granulometrie
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

Also Published As

Publication number Publication date
GR80280B (en) 1984-09-13
FR2551429B2 (fr) 1985-10-18
IE57701B1 (en) 1993-03-10
JPS60502099A (ja) 1985-12-05
HU200572B (en) 1990-07-28
AU3390384A (en) 1985-03-29
NL8402664A (nl) 1985-04-01
WO1985001040A1 (fr) 1985-03-14
YU152084A (en) 1987-12-31
ES535629A0 (es) 1985-05-16
DE3432473A1 (de) 1985-03-21
DE3432473C2 (es) 1988-09-29
GB8422339D0 (en) 1984-10-10
YU44877B (en) 1991-04-30
JPH0210088B2 (es) 1990-03-06
CA1252606A (fr) 1989-04-18
ZA846926B (en) 1985-04-24
IT1178508B (it) 1987-09-09
GB2146012A (en) 1985-04-11
FR2551429A2 (fr) 1985-03-08
AU568155B2 (en) 1987-12-17
CH662336A5 (fr) 1987-09-30
NO851239L (no) 1985-03-27
HUT36056A (en) 1985-08-28
DE3432473C3 (de) 1998-02-12
GB2146012B (en) 1987-02-18
IE842258L (en) 1985-03-05
US4614642A (en) 1986-09-30
IT8422498A0 (it) 1984-09-03
PH19829A (en) 1986-07-14
BR8407055A (pt) 1985-08-13

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20040203