ES2054490T3 - Procedimiento para la precipitacion de hidroxido de aluminio a partir de un licor del procedimiento bayer. - Google Patents

Procedimiento para la precipitacion de hidroxido de aluminio a partir de un licor del procedimiento bayer.

Info

Publication number
ES2054490T3
ES2054490T3 ES91903210T ES91903210T ES2054490T3 ES 2054490 T3 ES2054490 T3 ES 2054490T3 ES 91903210 T ES91903210 T ES 91903210T ES 91903210 T ES91903210 T ES 91903210T ES 2054490 T3 ES2054490 T3 ES 2054490T3
Authority
ES
Spain
Prior art keywords
particles
thick
liquor
solution
aluminum hydroxide
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 - Lifetime
Application number
ES91903210T
Other languages
English (en)
Inventor
Bryan Arthur Hiscox
Charles Douglas Ellis
Jacques Emile Larocque
Denis Renald Audet
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 Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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 Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Application granted granted Critical
Publication of ES2054490T3 publication Critical patent/ES2054490T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)
  • Fertilizers (AREA)

Abstract

EL PROCESO COMPRENDE LA DIVISION DE UNA SOLUCION DE LICOR IMPREGNANTEDE ENTRADA EN UNA PARTE INFERIOR AL 10 AL 25% DE LA SOLUCION DE LICOR IMPREGNANTE DE ENTRADA TOTAL, Y EL DIRECCIONAMIENTO DE ESA SOLUCION A UNA SERIE DE PEQUEÑOS TANQUES DONDE A LA SOLUCION INFERIOR SE LE PERMITE AGLOMERARSE. A ESTA SOLUCION SE LE AÑADE PARTICULAS DE HIDROXIDO DE ALUMINIO FINO QUE TIENEN UN TAMAÑO MEDIO DE PARTICULAS DE ENTRE 30 A 60 MICRONES. A CONTINUACION, LA MEZCLA RESULTANTE DE LA FASE DE AGLOMERACION SE DIRIGE A UN CONJUNTO DE RECIPIENTES MAS GRANDES EN LOS QUE TENDRA LUGAR LA FASE DE CRECIMIENTO. EN ESTE PUNTO, LA PARTE RESTANTE DEL LICOR IMPREGNANTE SE COMBINA CON LA MEZCLA RESULTANTE DE LA FASE DE AGLOMERACION. EN EL SEGUNDO CONJUNTO DE RECIPIENTES SE CARGA UNA CARGA DE PARTICULAS GRUESAS DE ENTRE 150 A 600 GRAMOS/LITRO DE PARTICULAS QUE TIENEN UN TAMAÑO MEDIO DE ENTRE 80 Y 100 MICRONES. DE LA MEZCLA RESULTANTE DE LA ETAPA DE CRECIMIENTO SE SEPARAN LAS PARTICULAS DE HIDROXIDO DE ALUMINIO FINAS Y GRUESAS. PARALELA A ESTA PRIMERA CADENA DE PRECIPITACION SE PROPORCIONA UNA O MAS CADENAS SIMILARES MEDIANTE LA INTRODUCCION MUTUA DE SOLUCIONES DE PARTICULAS EN LAS CADENAS EN LAS QUE SE EXPONEN LAS PARTICULAS VARIAS VECES AL LICOR FRESCO. EN LA AGLOMERACION ORIGINAL SE DEPOSITAN SUCESIVAS CAPAS DE HIDRATO QUE AYUDAN A AUMENTAR EL RENDIMIENTO DE UN PRODUCTO CONCENTRADO DE TRIHIDROXIDO DE ALUMINIO GRUESO.
ES91903210T 1990-02-14 1991-02-11 Procedimiento para la precipitacion de hidroxido de aluminio a partir de un licor del procedimiento bayer. Expired - Lifetime ES2054490T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/480,059 US5102426A (en) 1990-02-14 1990-02-14 Process for precipitating alumina from bayer process liquor

Publications (1)

Publication Number Publication Date
ES2054490T3 true ES2054490T3 (es) 1994-08-01

Family

ID=23906510

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91903210T Expired - Lifetime ES2054490T3 (es) 1990-02-14 1991-02-11 Procedimiento para la precipitacion de hidroxido de aluminio a partir de un licor del procedimiento bayer.

Country Status (7)

Country Link
US (1) US5102426A (es)
EP (1) EP0515407B1 (es)
AU (1) AU635821B2 (es)
BR (1) BR9106066A (es)
ES (1) ES2054490T3 (es)
IE (1) IE64939B1 (es)
WO (1) WO1991012205A1 (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163973A (en) * 1990-02-14 1992-11-17 Alcan Internatinal Limited Process for producing low soda alumina
US5342485A (en) * 1992-08-05 1994-08-30 Reynolds Metals Company Process for preparing ultra-white alumina trihydrate
ES2137447T3 (es) * 1994-11-30 1999-12-16 Billiton Intellectual Pty Procedimiento para la precipitacion de hidroxido de aluminio a partir de una solucion de aluminato de sodio supersaturado.
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
EP0997435B1 (en) * 1998-10-28 2007-01-24 Alcan Technology & Management AG Process for the manufacture of coarse aluminium hydroxide
RU2263635C2 (ru) * 2003-02-27 2005-11-10 Акционерное общество "Алюминий Казахстана" Способ осаждения и классификации гидроокиси алюминия
RU2256616C2 (ru) * 2003-07-21 2005-07-20 Открытое акционерное общество "Сибирско-Уральская алюминиевая компания" Способ отделения гидроксида алюминия от раствора
RU2381992C2 (ru) * 2005-09-26 2010-02-20 Открытое акционерное общество "РУСАЛ Ачинский Глиноземный Комбинат" (ОАО "РУСАЛ Ачинск") Способ получения песчаного глинозема при переработке глиноземсодержащего сырья способом спекания
RU2361815C1 (ru) * 2007-12-03 2009-07-20 Государственное образовательное учреждение высшего профессионального образования "Уральский государственный технический университет-УПИ" Способ переработки глиноземсодержащего сырья
RU2721702C1 (ru) * 2019-08-22 2020-05-21 Федеральное государственное бюджетное образовательное учреждение высшего образования "Красноярский государственный аграрный университет" Способ очистки отходящих газов от печей спекания глиноземного производства

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707669A (en) * 1951-02-06 1955-05-03 Kaiser Aluminium Chem Corp Alumina production
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
US3649184A (en) * 1969-05-29 1972-03-14 Reynolds Metals Co Precipitation of alumina hydrate
JPS5344920B2 (es) * 1972-05-08 1978-12-02
JPS5456999A (en) * 1977-10-17 1979-05-08 Nippon Light Metal Co Preparation of crude alumina particles
JPS5551720A (en) * 1978-10-06 1980-04-15 Nippon Light Metal Co Ltd Manufacture of coarse grain aluminum hydroxide
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
EP0102403B1 (de) * 1982-09-02 1986-03-05 Alcoa Chemie GmbH Verbessertes Verfahren zur Gewinnung von Tonerde
FR2551429B2 (fr) * 1983-09-05 1985-10-18 Pechiney Aluminium Procede de production d'un trihydroxyde d'aluminium de granulometrie grosse et reguliere
US4511542A (en) * 1984-05-24 1985-04-16 Kaiser Aluminum & Chemical Corporation Bayer process production of alumina hydrate
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

Also Published As

Publication number Publication date
AU7228591A (en) 1991-09-03
EP0515407B1 (en) 1994-06-01
AU635821B2 (en) 1993-04-01
US5102426A (en) 1992-04-07
WO1991012205A1 (en) 1991-08-22
IE64939B1 (en) 1996-09-20
IE910470A1 (en) 1991-08-14
BR9106066A (pt) 1993-01-19
EP0515407A1 (en) 1992-12-02

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