EA201390607A1 - METHOD AND INSTALLATION FOR OBTAINING ALUMINUM OXIDE FROM ALUMINUM HYDROXIDE - Google Patents

METHOD AND INSTALLATION FOR OBTAINING ALUMINUM OXIDE FROM ALUMINUM HYDROXIDE

Info

Publication number
EA201390607A1
EA201390607A1 EA201390607A EA201390607A EA201390607A1 EA 201390607 A1 EA201390607 A1 EA 201390607A1 EA 201390607 A EA201390607 A EA 201390607A EA 201390607 A EA201390607 A EA 201390607A EA 201390607 A1 EA201390607 A1 EA 201390607A1
Authority
EA
Eurasian Patent Office
Prior art keywords
water
aluminum hydroxide
stream
hydrate filter
liquid fraction
Prior art date
Application number
EA201390607A
Other languages
Russian (ru)
Other versions
EA022436B1 (en
Inventor
Михель Миссала
Роджер Блай
Гюнтер Шнайдер
Original Assignee
Ототек Оюй
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 Ототек Оюй filed Critical Ототек Оюй
Publication of EA201390607A1 publication Critical patent/EA201390607A1/en
Publication of EA022436B1 publication Critical patent/EA022436B1/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

В получении оксида алюминия из гидроксида алюминия а) гидроксид алюминия очищают промывочной водой в фильтре для гидрата, б) очищенный гидроксид алюминия, по меньшей мере частично, высушивают и/или предварительно прокаливают в ходе по меньшей мере одной стадии предварительного нагрева, в) этот предварительно обработанный гидроксид алюминия прокаливают в реакторе с псевдоожиженным слоем, получая оксид алюминия, г) полученный оксид алюминия охлаждают в ходе по меньшей мере одной стадии косвенного охлаждения с использованием воды в качестве хладагента, д) пар (D), полученный из охлаждающей воды вследствие теплопередачи на стадии косвенного охлаждения, отделяют от жидкой фракции (А) выходящего потока со стадии (Е) охлаждения и е) по меньшей мере одну часть (Т) потока жидкой фракции (А) направляют в фильтр для гидрата и используют здесь в качестве промывочной воды для очистки гидроксида алюминия в фильтре для гидрата. В соответствии с изобретением дополнительный поток (Z) воды добавляют к части (Т) потока жидкой фракции (А), поданной на фильтр для гидрата, и регулируют соотношение смешения двух потоков (Т, Z) таким образом, что полученный из них поток (W) промывочной воды имеет постоянное максимальное значение температуры ниже точки кипения воды и объемный расход, который требуется для промывочной воды для фильтра для гидрата.In the production of aluminum oxide from aluminum hydroxide a) the aluminum hydroxide is purified by flushing water in a hydrate filter, b) the purified aluminum hydroxide is at least partially dried and / or pre-calcined during at least one preheating stage, c) this the treated aluminum hydroxide is calcined in a fluidized bed reactor to produce alumina, d) the alumina produced is cooled in at least one indirect cooling step using water as a refrigerant, e) vapor (D) obtained from cooling water due to heat transfer to indirect cooling stage, is separated from the liquid fraction (A) of the effluent from the cooling stage (E) and e) at least one part (T) of the liquid fraction stream (A) is sent to a hydrate filter and is used here as wash water for cleaning aluminum hydroxide in the hydrate filter. In accordance with the invention, an additional stream (Z) of water is added to part (T) of the stream of the liquid fraction (A) fed to the hydrate filter, and the mixing ratio of the two streams (T, Z) is controlled so that the stream (W ) of the wash water has a constant maximum temperature below the boiling point of the water and the volumetric flow required for the wash water for the hydrate filter.

EA201390607A 2010-11-08 2011-10-27 Process and plant for producing alumina from aluminum hydroxide EA022436B1 (en)

Applications Claiming Priority (2)

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
PCT/EP2011/068849 WO2012062593A1 (en) 2010-11-08 2011-10-27 Process and plant for producing alumina from aluminum hydroxide

Publications (2)

Publication Number Publication Date
EA201390607A1 true EA201390607A1 (en) 2013-10-30
EA022436B1 EA022436B1 (en) 2015-12-30

Family

ID=44907853

Family Applications (1)

Application Number Title Priority Date Filing Date
EA201390607A EA022436B1 (en) 2010-11-08 2011-10-27 Process and plant for producing alumina 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
DE102010050495B4 (en) 2018-05-24
AU2011328390A1 (en) 2013-05-02
WO2012062593A1 (en) 2012-05-18
BR112013011240B1 (en) 2020-12-08
UA105585C2 (en) 2014-05-26
BR112013011240A2 (en) 2016-11-01
DE102010050495A1 (en) 2012-05-10
AU2011328390B2 (en) 2014-08-21
BR112013011240B8 (en) 2023-03-28
EA022436B1 (en) 2015-12-30
JO2879B1 (en) 2015-03-15

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Legal Events

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MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ BY KG MD TJ TM