ES2099558T3 - Procedimiento para fluidizar unas suspensiones acuosas de barros rojos en la preparacion de alumina por el procedimiento bayer. - Google Patents

Procedimiento para fluidizar unas suspensiones acuosas de barros rojos en la preparacion de alumina por el procedimiento bayer.

Info

Publication number
ES2099558T3
ES2099558T3 ES94420199T ES94420199T ES2099558T3 ES 2099558 T3 ES2099558 T3 ES 2099558T3 ES 94420199 T ES94420199 T ES 94420199T ES 94420199 T ES94420199 T ES 94420199T ES 2099558 T3 ES2099558 T3 ES 2099558T3
Authority
ES
Spain
Prior art keywords
procedure
fluidize
alumina
red mud
bayer
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES94420199T
Other languages
English (en)
Inventor
Adrian Parker
Rene Pich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SNF SA
Original Assignee
SNF SA
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 SNF SA filed Critical SNF SA
Application granted granted Critical
Publication of ES2099558T3 publication Critical patent/ES2099558T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)

Abstract

PROCESO PERFECCIONADO PARA FLUIDIZAR LAS SUSPENSIONES ACUOSAS FLOCULADAS DE BARROS ROJOS EN LA FABRICACION DE LA BAUXITA POR EL PROCESO DE BAYER QUE CONSISTE EN: .DISOLVER BAUXITA MEDIANTE SOSA, . Y DECANTAR Y LAVAR LOS BARROS ROJOS FORMADOS PARA SEPARARLOS DE LA ALUMINA EN RECIPIENTES SUCESIVOS A LA VEZ QUE RECICLAN CORRIENTE ARRIBA LAS AGUAS DE LAVADO, . Y POR FIN ELIMINAR LOS BARROS ROJOS ASI TRATADOS, Y EN EL QUE, SE INTRODUCE EN LA SUSPENSION DE UNO DE LOS RECIPIENTES SUCESIVOS, UN AGENTE FLOCULANTE (F) CONSTITUIDO POR UN POLIACRILAMINA DE PESO MOLECULAR SUPERIOR A DIEZ MILLONES; CARACTERIZADO EN QUE SIMULTANEAMENTE A ESTE AGENTE FLOCULANTE (F), SE AÑADE A LA SUSPENSION Y EN EL MISMO RECIPIENTE, UN AGENTE DISPERSANTE (D) FORMADO POR UN POLIMERO DE ACIDO ACRILICO ANIONICO DE PESO MOLECULAR INFERIOR A CINCUENTAMIL.
ES94420199T 1993-07-29 1994-07-12 Procedimiento para fluidizar unas suspensiones acuosas de barros rojos en la preparacion de alumina por el procedimiento bayer. Expired - Lifetime ES2099558T3 (es)

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
ES2099558T3 true ES2099558T3 (es) 1997-05-16

Family

ID=9449919

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94420199T Expired - Lifetime ES2099558T3 (es) 1993-07-29 1994-07-12 Procedimiento para fluidizar unas suspensiones acuosas de barros rojos en la preparacion de alumina por el procedimiento bayer.

Country Status (8)

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

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
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
GR3023554T3 (en) 1997-08-29

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