BR112013011240B8 - PROCESS AND INSTALLATION FOR ALUMIN PRODUCTION FROM ALUMINUM HYDROXIDE - Google Patents

PROCESS AND INSTALLATION FOR ALUMIN PRODUCTION FROM ALUMINUM HYDROXIDE

Info

Publication number
BR112013011240B8
BR112013011240B8 BR112013011240A BR112013011240A BR112013011240B8 BR 112013011240 B8 BR112013011240 B8 BR 112013011240B8 BR 112013011240 A BR112013011240 A BR 112013011240A BR 112013011240 A BR112013011240 A BR 112013011240A BR 112013011240 B8 BR112013011240 B8 BR 112013011240B8
Authority
BR
Brazil
Prior art keywords
aluminum hydroxide
water
stream
hydrate filter
production
Prior art date
Application number
BR112013011240A
Other languages
Portuguese (pt)
Other versions
BR112013011240B1 (en
BR112013011240A2 (en
Inventor
Missalla Michael
Bligh Roger
Schneider Günter
Original Assignee
Outotec Oyj
Outotec Finland Oy
Metso Minerals Oy
Metso Outotec Finland Oy
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 Outotec Oyj, Outotec Finland Oy, Metso Minerals Oy, Metso Outotec Finland Oy filed Critical Outotec Oyj
Publication of BR112013011240A2 publication Critical patent/BR112013011240A2/en
Publication of BR112013011240B1 publication Critical patent/BR112013011240B1/en
Publication of BR112013011240B8 publication Critical patent/BR112013011240B8/en

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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C01F7/444—Apparatus therefor
    • 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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C01F7/445—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination making use of a fluidised bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00002—Chemical plants
    • B01J2219/00004—Scale aspects
    • B01J2219/00006—Large-scale industrial plants

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)

Abstract

PROCESSO E INSTALAÇÃO PARA PRODUÇÃO DE ALUMINA A PARTIR DE HIDRÓXIDO DE ALUMÍNIO. A presente invenção refere-se à produção de alumina a partir de hidróxido de alumínio, a) o hidróxido de alumínio é purificado com água de lavagem em um filtro de hidrato, b) o hidróxido de alumínio purificado é pelo menos parcialmente secado e/ou pré-calcinado em pelo menos uma etapa de pré-aquecimento, c) esse hidróxido de alumínio pré tratado é calcinado em um reator de leito fluidizado para obter alumina, d) a alumina obtida é resfriada em pelo menos uma etapa de resfriamento indireto usando-se água como agente de resfriamento, e) o vapor (D) obtido da água de resfriamento devido à transferência de calor na etapa de resfriamento indireto é separado da fração líquida (A) da corrente de saída da etapa de resfriamento (E), f) e pelo menos uma corrente parcial (T) da fração líquida (A) é guiada para o filtro de hidrato e usada ali como água de lavagem para purificar o hidróxido de alumínio no filtro de hidrato. De acordo com a invenção, uma corrente de água adicional (Z) é adicionada à corrente parcial (T) da fração líquida (A) guiada para o filtro de hidrato e a razão de mistura das duas correntes (T, Z) é ajustada de forma que a corrente de água de lavagem (W) daí resultante tenha um valor constante de temperatura máxima abaixo do ponto de ebulição da água e o fluxo de volume requerido pelo filtro de hidrato como água de lavagem.PROCESS AND INSTALLATION FOR THE PRODUCTION OF ALUMIN FROM ALUMINUM HYDROXIDE. The present invention relates to the production of alumina from aluminum hydroxide, a) the aluminum hydroxide is purified with washing water on a hydrate filter, b) the purified aluminum hydroxide is at least partially dried and/or precalcined in at least one preheating step, c) this pretreated aluminum hydroxide is calcined in a fluidized bed reactor to obtain alumina, d) the alumina obtained is cooled in at least one indirect cooling step using if water as cooling agent, e) the vapor (D) obtained from the cooling water due to heat transfer in the indirect cooling step is separated from the liquid fraction (A) of the output stream of the cooling step (E), f ) and at least a partial stream (T) of the liquid fraction (A) is guided to the hydrate filter and used there as wash water to purify the aluminum hydroxide in the hydrate filter. According to the invention, an additional stream of water (Z) is added to the partial stream (T) of the liquid fraction (A) guided to the hydrate filter and the mixing ratio of the two streams (T, Z) is adjusted accordingly. so that the resulting wash water stream (W) has a constant maximum temperature value below the boiling point of water and the volume flow required by the hydrate filter as wash water.

BR112013011240A 2010-11-08 2011-10-27 PROCESS AND INSTALLATION FOR ALUMIN PRODUCTION FROM ALUMINUM HYDROXIDE BR112013011240B8 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010050495.5A DE102010050495B4 (en) 2010-11-08 2010-11-08 Process and plant for the production of aluminum oxide from aluminum hydroxide
DE102010050495.5 2010-11-08
PCT/EP2011/068849 WO2012062593A1 (en) 2010-11-08 2011-10-27 Process and plant for producing alumina from aluminum hydroxide

Publications (3)

Publication Number Publication Date
BR112013011240A2 BR112013011240A2 (en) 2016-11-01
BR112013011240B1 BR112013011240B1 (en) 2020-12-08
BR112013011240B8 true BR112013011240B8 (en) 2023-03-28

Family

ID=44907853

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112013011240A BR112013011240B8 (en) 2010-11-08 2011-10-27 PROCESS AND INSTALLATION FOR ALUMIN PRODUCTION FROM ALUMINUM HYDROXIDE

Country Status (7)

Country Link
AU (1) AU2011328390B2 (en)
BR (1) BR112013011240B8 (en)
DE (1) DE102010050495B4 (en)
EA (1) EA022436B1 (en)
JO (1) JO2879B1 (en)
UA (1) UA105585C2 (en)
WO (1) WO2012062593A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2022100082B4 (en) * 2019-11-26 2023-06-22 Metso Metals Oy Optimized semi-dry process for sintering of aluminosilicates in the production of alumina
DE102020127374A1 (en) 2020-10-16 2022-04-21 Technische Universität Bergakademie Freiberg Process for decomposing a metal carbonate and/or metal hydroxide to their metal oxide by means of microwaves
CN112429756A (en) * 2020-12-17 2021-03-02 中铝国际工程股份有限公司 Method and device for controlling temperature of first decomposition tank

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU518907B2 (en) * 1979-01-08 1981-10-29 Monash University Alumina production
DE3615622A1 (en) 1986-05-09 1987-11-12 Metallgesellschaft Ag METHOD FOR CARRYING OUT ENDOTHERMAL PROCESSES
DE19542309A1 (en) 1995-11-14 1997-05-15 Metallgesellschaft Ag Process for the production of aluminum oxide from aluminum hydroxide
AU2005237179B2 (en) 2005-11-25 2011-03-17 Outotec Oyj Process and plant for producing metal oxide from metal compounds
DE102007014435B4 (en) 2007-03-22 2014-03-27 Outotec Oyj Process and plant for the production of metal oxide from metal salts
DE102009006094B4 (en) 2009-01-26 2018-10-31 Outotec Oyj Process and plant for the production of aluminum oxide from aluminum hydroxide

Also Published As

Publication number Publication date
BR112013011240B1 (en) 2020-12-08
EA201390607A1 (en) 2013-10-30
AU2011328390B2 (en) 2014-08-21
DE102010050495A1 (en) 2012-05-10
DE102010050495B4 (en) 2018-05-24
EA022436B1 (en) 2015-12-30
UA105585C2 (en) 2014-05-26
JO2879B1 (en) 2015-03-15
AU2011328390A1 (en) 2013-05-02
WO2012062593A1 (en) 2012-05-18
BR112013011240A2 (en) 2016-11-01

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06T Formal requirements before examination [chapter 6.20 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 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 27/10/2011, OBSERVADAS AS CONDICOES LEGAIS.

B25A Requested transfer of rights approved

Owner name: OUTOTEC (FINLAND) OY (FI)

B25A Requested transfer of rights approved

Owner name: METSO MINERALS OY (FI)

B25D Requested change of name of applicant approved

Owner name: METSO OUTOTEC FINLAND OY (FI)