WO2006106443A3 - Method and plant for manufacturing of alumina - Google Patents

Method and plant for manufacturing of alumina Download PDF

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Publication number
WO2006106443A3
WO2006106443A3 PCT/IB2006/050788 IB2006050788W WO2006106443A3 WO 2006106443 A3 WO2006106443 A3 WO 2006106443A3 IB 2006050788 W IB2006050788 W IB 2006050788W WO 2006106443 A3 WO2006106443 A3 WO 2006106443A3
Authority
WO
WIPO (PCT)
Prior art keywords
plant
filter
dust
alumina
calcined
Prior art date
Application number
PCT/IB2006/050788
Other languages
French (fr)
Other versions
WO2006106443A2 (en
Inventor
Benny Raahauge
Original Assignee
Ffe Minerals Denmark As
Benny Raahauge
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 Ffe Minerals Denmark As, Benny Raahauge filed Critical Ffe Minerals Denmark As
Publication of WO2006106443A2 publication Critical patent/WO2006106443A2/en
Publication of WO2006106443A3 publication Critical patent/WO2006106443A3/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

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)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

Described is method as well as a plant for manufacturing alumina (Al2O3) from raw materials containing aluminium hydroxide (Al(OH)3), by which method the raw materials are preheated in a cyclone preheater (1), calcined in a furnace (3), cooled in a cyclone cooler (5), with dust filtration of process gases being effected in a filter (9). The method and the plant are peculiar in that a portion of the calcined, not completely cooled alumina is extracted from the plant, and that this portion is introduced into a separate processing unit (11) in which it is blended with filter dust which is fed to the processing unit (11) from the filter (9). As a result, final calcination of the filter dust is achieved without increasing the dust circulation in the plant, and without any adverse effect on the capacity of the filter.
PCT/IB2006/050788 2005-04-06 2006-03-14 Method and plant for manufacturing of alumina WO2006106443A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200500476 2005-04-06
DKPA200500476 2005-04-06

Publications (2)

Publication Number Publication Date
WO2006106443A2 WO2006106443A2 (en) 2006-10-12
WO2006106443A3 true WO2006106443A3 (en) 2006-11-30

Family

ID=37073834

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/050788 WO2006106443A2 (en) 2005-04-06 2006-03-14 Method and plant for manufacturing of alumina

Country Status (1)

Country Link
WO (1) WO2006106443A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014435B4 (en) 2007-03-22 2014-03-27 Outotec Oyj Process and plant for the production of metal oxide from metal salts
DE102013103080A1 (en) 2013-03-26 2014-06-12 Outotec Oyj Method for removing fine solid material particles from fluidized bed in e.g. cement manufacturing plant, involves indirectly cooling additional gas flow into initiated fluidized bed chamber above fluidized bed
CN104556167B (en) * 2014-12-19 2016-07-06 贵州天合国润高新材料科技有限公司 A kind of method preparing tabular alumina powder
CN112174176B (en) * 2020-09-28 2022-11-15 沈阳鑫博工业技术股份有限公司 Device and method for preparing alpha-alumina by using aluminum hydroxide

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529356A (en) * 1967-10-06 1970-09-22 Kloeckner Humboldt Deutz Ag Method of continuously dehydrating aluminum oxide hydrates
WO1996036563A1 (en) * 1995-05-17 1996-11-21 Aluchem, Inc. Method and apparatus for making high-grade alumina from low-grade aluminum oxide fines
DE10331364B3 (en) * 2003-07-11 2005-01-27 Outokumpu Oyj Process and plant for the production of metal oxide from metal hydroxide
US20050238571A1 (en) * 2004-04-26 2005-10-27 Raahauge Benny E Process and apparatus for the production of alumina

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529356A (en) * 1967-10-06 1970-09-22 Kloeckner Humboldt Deutz Ag Method of continuously dehydrating aluminum oxide hydrates
WO1996036563A1 (en) * 1995-05-17 1996-11-21 Aluchem, Inc. Method and apparatus for making high-grade alumina from low-grade aluminum oxide fines
DE10331364B3 (en) * 2003-07-11 2005-01-27 Outokumpu Oyj Process and plant for the production of metal oxide from metal hydroxide
US20050238571A1 (en) * 2004-04-26 2005-10-27 Raahauge Benny E Process and apparatus for the production of alumina

Also Published As

Publication number Publication date
WO2006106443A2 (en) 2006-10-12

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