CA2861935C - Procede pour produire de l'hydroxyde d'aluminium au moyen d'une precipitation ensemencee d'une solution d'aluminate de sodium sursaturee - Google Patents

Procede pour produire de l'hydroxyde d'aluminium au moyen d'une precipitation ensemencee d'une solution d'aluminate de sodium sursaturee Download PDF

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Publication number
CA2861935C
CA2861935C CA2861935A CA2861935A CA2861935C CA 2861935 C CA2861935 C CA 2861935C CA 2861935 A CA2861935 A CA 2861935A CA 2861935 A CA2861935 A CA 2861935A CA 2861935 C CA2861935 C CA 2861935C
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CA
Canada
Prior art keywords
precipitation tank
agitation
seeded precipitation
seeded
aluminum hydroxide
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CA2861935A
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English (en)
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CA2861935A1 (fr
Inventor
Xiangdong Su
Daqiao HU
Li He
Yuanfa DING
Danning LI
Tao Xue
Kaisheng JIN
Yong Li
Jian Huang
Hong Luo
Hongbo Liu
Yongsheng XIONG
Gang Li
Chunsheng TAN
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Guizhou R & D Center On Modern Materials
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Guizhou R & D Center On Modern Materials
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Publication of CA2861935A1 publication Critical patent/CA2861935A1/fr
Application granted granted Critical
Publication of CA2861935C publication Critical patent/CA2861935C/fr
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

Procédé de production d'hydroxyde d'aluminium par décomposition à germes d'une solution d'aluminate de sodium sursaturée, dans lequel l'agitation est uniquement effectuée localement au fond d'un réservoir de décomposition à germes avec une intensité suffisante pour maintenir les particules d'hydroxyde d'aluminium au fond du réservoir de décomposition à germes dans un état de suspension, afin de favoriser un transfert de masse par diffusion de la solution d'aluminate de sodium avec une teneur élevée en matières solides et un rapport moléculaire élevé au fond du réservoir de décomposition à germes, et empêcher les particules d'hydroxyde d'aluminium au fond du réservoir de décomposition à germes de produire des précipités.
CA2861935A 2012-01-20 2012-04-17 Procede pour produire de l'hydroxyde d'aluminium au moyen d'une precipitation ensemencee d'une solution d'aluminate de sodium sursaturee Active CA2861935C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201210019003.0 2012-01-20
CN201210019003.0A CN102583474B (zh) 2012-01-20 2012-01-20 过饱和铝酸钠溶液晶种分解生产氢氧化铝的工艺方法
PCT/CN2012/074190 WO2013107120A1 (fr) 2012-01-20 2012-04-17 Procédé de production d'hydroxyde d'aluminium par décomposition à germes de solution d'aluminate de sodium sursaturée

Publications (2)

Publication Number Publication Date
CA2861935A1 CA2861935A1 (fr) 2013-07-25
CA2861935C true CA2861935C (fr) 2016-12-06

Family

ID=46472837

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2861935A Active CA2861935C (fr) 2012-01-20 2012-04-17 Procede pour produire de l'hydroxyde d'aluminium au moyen d'une precipitation ensemencee d'une solution d'aluminate de sodium sursaturee

Country Status (4)

Country Link
CN (1) CN102583474B (fr)
AU (1) AU2012365963B2 (fr)
CA (1) CA2861935C (fr)
WO (1) WO2013107120A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992366A (zh) * 2012-11-19 2013-03-27 贵州省新材料研究开发基地 氢氧化铝微粉制备工艺方法
CN103736317A (zh) * 2013-12-14 2014-04-23 中国铝业股份有限公司 一种种分过滤机供料方法
CN110127737B (zh) * 2019-07-01 2023-09-19 济源职业技术学院 拜耳法氧化铝生产中防止种分周期性细化的装置
CN112960682B (zh) * 2021-03-03 2022-10-11 杭州智华杰科技有限公司 一种提高层析氧化铝再生次数的方法
CN114184152B (zh) * 2021-12-03 2024-05-14 中国铝业股份有限公司 晶种分解槽的积料厚度测量方法、存储介质及电子设备

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653858A (en) * 1951-09-22 1953-09-29 Aluminum Co Of America Precipitation of aluminum hydroxide
NO135059C (fr) * 1975-04-16 1977-02-02 Norsk Hydro As
US6217622B1 (en) * 1998-10-22 2001-04-17 Alcan International Limited Method and apparatus for precipitating and classifying solids in high concentrations
AU2002301811B2 (en) * 2001-11-07 2007-08-23 Sumitomo Chemical Company, Limited Aluminum hydroxide aggregated particles, process for producing the same, vessel used therefor, and process for producing aluminum hydroxide powder
CN201458765U (zh) * 2009-08-18 2010-05-12 胡大乔 铝酸钠溶液柱状流平底分解槽
CN101628726A (zh) * 2009-08-18 2010-01-20 胡大乔 铝酸钠溶液柱状流平底分解槽
CN101955212B (zh) * 2010-09-26 2013-03-27 苏向东 铝酸钠溶液平推流分解反应装置
CN101955213B (zh) * 2010-09-26 2013-01-02 胡大乔 铝酸钠溶液平推流晶种分解槽
CN201825743U (zh) * 2010-09-26 2011-05-11 胡大乔 铝酸钠溶液平推流晶种分解槽
CN201825742U (zh) * 2010-09-26 2011-05-11 苏向东 铝酸钠溶液平推流分解反应装置
CN202011755U (zh) * 2011-01-18 2011-10-19 贵州科学院 微搅动多锥底组合平推流氢氧化铝种分槽
CN202175569U (zh) * 2011-05-10 2012-03-28 贵州科学院 氢氧化铝大型平底晶种分解槽

Also Published As

Publication number Publication date
CN102583474A (zh) 2012-07-18
WO2013107120A1 (fr) 2013-07-25
CN102583474B (zh) 2014-08-27
AU2012365963B2 (en) 2015-11-26
CA2861935A1 (fr) 2013-07-25
AU2012365963A1 (en) 2014-09-11

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Effective date: 20140718