GR3023554T3 - Process for the fluidization of aqueous red mud suspensions during the preparation of alumina by the Bayer process. - Google Patents

Process for the fluidization of aqueous red mud suspensions during the preparation of alumina by the Bayer process.

Info

Publication number
GR3023554T3
GR3023554T3 GR970401205T GR970401205T GR3023554T3 GR 3023554 T3 GR3023554 T3 GR 3023554T3 GR 970401205 T GR970401205 T GR 970401205T GR 970401205 T GR970401205 T GR 970401205T GR 3023554 T3 GR3023554 T3 GR 3023554T3
Authority
GR
Greece
Prior art keywords
fluidization
alumina
preparation
red mud
aqueous red
Prior art date
Application number
GR970401205T
Other languages
English (en)
Inventor
Adrian Parker
Rene Pich
Original Assignee
S N F
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 S N F filed Critical S N F
Publication of GR3023554T3 publication Critical patent/GR3023554T3/el

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
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud
    • C01F7/0653—Separation of the insoluble residue, e.g. of red mud characterised by the flocculant added to the slurry
    • 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
    • C01F7/06—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/0646—Separation of the insoluble residue, e.g. of red mud

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Treatment Of Sludge (AREA)
GR970401205T 1993-07-29 1997-05-23 Process for the fluidization of aqueous red mud suspensions during the preparation of alumina by the Bayer process. GR3023554T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9309584A FR2708587B1 (fr) 1993-07-29 1993-07-29 Procédé pour fluidifier les suspensions aqueuses de boues rouges dans la fabrication de l'alumine par la technique Bayer .

Publications (1)

Publication Number Publication Date
GR3023554T3 true GR3023554T3 (en) 1997-08-29

Family

ID=9449919

Family Applications (1)

Application Number Title Priority Date Filing Date
GR970401205T GR3023554T3 (en) 1993-07-29 1997-05-23 Process for the fluidization of aqueous red mud suspensions during the preparation of alumina by the Bayer process.

Country Status (8)

Country Link
US (1) US5653946A (el)
EP (1) EP0636578B1 (el)
CN (1) CN1035322C (el)
AU (1) AU669633B2 (el)
CA (1) CA2127427A1 (el)
ES (1) ES2099558T3 (el)
FR (1) FR2708587B1 (el)
GR (1) GR3023554T3 (el)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6231768B1 (en) * 1999-01-19 2001-05-15 Nalco Chemical Company Rheology modification of settled solids in mineral processing
DE10333478A1 (de) * 2003-07-22 2005-03-10 Stockhausen Chem Fab Gmbh Verfahren zur Behandlung von wässrigem Schlamm, danach hergestelltes Material und dessen Verwendung
AU2010295189B2 (en) 2009-09-15 2014-03-27 Suncor Energy Inc. Process for flocculating and dewatering oil sand mature fine tailings
WO2011032253A1 (en) 2009-09-15 2011-03-24 Suncor Energy Inc. Process for drying oil sand mature fine tailings
WO2011050440A1 (en) 2009-10-30 2011-05-05 Suncor Energy Inc. Depositing and farming methods for drying oil sand mature fine tailings
FR3082197B1 (fr) 2018-06-08 2021-04-23 Coatex Sas Recyclage d'eau dans un derive minier
FR3082124B1 (fr) * 2018-06-08 2021-05-28 Coatex Sas Controle de la sedimentation d'un derive minier
WO2020089271A1 (en) 2018-10-31 2020-05-07 Basf Se Enhanced dewatering of mining tailings employing chemical pre-treatment
CN109692517A (zh) * 2019-01-28 2019-04-30 云南文山铝业有限公司 一次洗液回收***及回收方法
CN110950521B (zh) * 2019-11-08 2021-11-09 威海汉邦生物环保科技股份有限公司 一种改进赤泥沉降分离效果的化学处理方法
CN111573696A (zh) * 2020-05-20 2020-08-25 冯承湖 赤泥碱直接回收利用的方法及***
CN113413643B (zh) * 2021-07-26 2022-07-01 中建西部建设建材科学研究院有限公司 一种混凝土搅拌站废浆高效沉降方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA819040A (en) * 1969-07-29 J. Sibert Frederick Process of making alumina
DE1767422B2 (de) * 1968-05-09 1977-07-21 Nalco Chemical Co, Chicago, III (VStA) Verfahren zur herstellung von aluminiumoxid aus bauxit
GB1439057A (en) * 1973-10-10 1976-06-09 Allied Colloids Ltd Flocculating agents for alkaline systems
US4083925A (en) * 1976-03-22 1978-04-11 Martin Marietta Aluminum, Inc. Method for removing ferrous iron from alkali metal aluminate liquor
US4169824A (en) * 1977-06-22 1979-10-02 Nalco Chemical Company Red mud treatment
IT7847966A0 (it) * 1977-06-22 1978-02-08 Nalco Chemical Company Soc Del Processo per trattare fanghi rossi
CA1176031A (en) * 1980-07-23 1984-10-16 American Cyanamid Company Process for alumina recovery
JPS5778911A (en) * 1980-11-04 1982-05-17 Kurita Water Ind Ltd Settling agent for red mud
US4545902A (en) * 1984-09-17 1985-10-08 Nalco Chemical Company Flocculants for bauxite (red mud)
GB8824176D0 (en) * 1988-10-14 1988-11-23 Allied Colloids Ltd Recovery of alumina from bauxite
US5043077A (en) * 1989-12-11 1991-08-27 Alcan International Limited Treatment of bayer process red mud slurries
US5387405A (en) * 1992-03-25 1995-02-07 Nalco Chemical Company Bayer liquor polishing
US5217620A (en) * 1992-11-23 1993-06-08 Nalco Chemical Company Clarification aid for the Bayer process

Also Published As

Publication number Publication date
EP0636578B1 (fr) 1997-03-12
EP0636578A1 (fr) 1995-02-01
CN1035322C (zh) 1997-07-02
ES2099558T3 (es) 1997-05-16
AU6758794A (en) 1995-02-09
AU669633B2 (en) 1996-06-13
US5653946A (en) 1997-08-05
FR2708587A1 (fr) 1995-02-10
CN1102819A (zh) 1995-05-24
FR2708587B1 (fr) 1995-09-01
CA2127427A1 (fr) 1995-01-30

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