BR112023026581A2 - Método e aparelho para calcinação de alumina - Google Patents

Método e aparelho para calcinação de alumina

Info

Publication number
BR112023026581A2
BR112023026581A2 BR112023026581A BR112023026581A BR112023026581A2 BR 112023026581 A2 BR112023026581 A2 BR 112023026581A2 BR 112023026581 A BR112023026581 A BR 112023026581A BR 112023026581 A BR112023026581 A BR 112023026581A BR 112023026581 A2 BR112023026581 A2 BR 112023026581A2
Authority
BR
Brazil
Prior art keywords
al2o3
preheater
steam
cooler
alumina
Prior art date
Application number
BR112023026581A
Other languages
English (en)
Inventor
Jerold Nathan Graham
Victor Chatfield Raymond
Jeffrey Haywood Ross
Lean Saw Woei
Original Assignee
Univ Adelaide
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
Priority claimed from AU2021901825A external-priority patent/AU2021901825A0/en
Application filed by Univ Adelaide filed Critical Univ Adelaide
Publication of BR112023026581A2 publication Critical patent/BR112023026581A2/pt

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
    • 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
    • C01F7/447—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by wet processes
    • C01F7/448—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by wet processes using superatmospheric pressure, e.g. hydrothermal conversion of gibbsite into boehmite
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/16—Pore diameter

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

método e aparelho para calcinação de alumina. um aparelho melhorado para calcinar tri-hidróxido de alumínio (al(oh)3) com vapor para produzir alumina (al2o3) é descrito. o aparelho compreende um pré-aquecedor de al(oh)3 configurado para aquecer uma matéria-prima de al(oh)3 contatando a mesma com vapor. o pré-aquecedor de al(oh)3 compreende pelo menos um separador de gás-sólido para separar al(oh)3 pré-aquecido do vapor carreador. o aparelho compreende adicionalmente um calcinador configurado para aceitar al(oh)3 pré-aquecido do pré-aquecedor de al(oh)3 e para produzir al2o3 aquecido pela calcinação com vapor. o aparelho também compreende um resfriador de al2o3 configurado para remover calor do al2o3 aquecido e produzir o produto de al2o3. o resfriador de al2o3 compreende pelo menos um separador de gás-sólido. o aparelho compreende adicionalmente um compressor de vapor em comunicação fluídica com o pré-aquecedor de al(oh)3, o calcinador e o resfriador de al2o3 e configurado para aceitar e pressurizar vapor carreador.
BR112023026581A 2021-06-17 2022-06-17 Método e aparelho para calcinação de alumina BR112023026581A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2021901825A AU2021901825A0 (en) 2021-06-17 Method and apparatus for alumina calcination
PCT/AU2022/050615 WO2022261726A1 (en) 2021-06-17 2022-06-17 Method and apparatus for alumina calcination

Publications (1)

Publication Number Publication Date
BR112023026581A2 true BR112023026581A2 (pt) 2024-03-05

Family

ID=84525766

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112023026581A BR112023026581A2 (pt) 2021-06-17 2022-06-17 Método e aparelho para calcinação de alumina

Country Status (5)

Country Link
US (1) US20240308868A1 (pt)
CN (1) CN117980683A (pt)
AU (1) AU2022294642A1 (pt)
BR (1) BR112023026581A2 (pt)
WO (1) WO2022261726A1 (pt)

Family Cites Families (5)

* 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
US4770869A (en) * 1983-11-07 1988-09-13 Aluminum Company Of America Steam producing process and products
US5336480A (en) * 1983-11-07 1994-08-09 Aluminum Company Of America Steam producing process
BRPI0718257B1 (pt) * 2006-10-30 2021-02-17 Alcoa Of Australia Limited método para calcinação de hidróxido de alumínio
AU2009225953B2 (en) * 2008-03-18 2013-11-21 Alcoa Of Australia Limited Method of concentrating a Bayer process liquor

Also Published As

Publication number Publication date
CN117980683A (zh) 2024-05-03
WO2022261726A1 (en) 2022-12-22
US20240308868A1 (en) 2024-09-19
AU2022294642A1 (en) 2024-01-18

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