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ES2006407A6 - Procedimiento para la disminucion de las impurezas em lejias del proceso bayer. - Google Patents

Procedimiento para la disminucion de las impurezas em lejias del proceso bayer.

Info

Publication number
ES2006407A6
ES2006407A6 ES8801134A ES8801134A ES2006407A6 ES 2006407 A6 ES2006407 A6 ES 2006407A6 ES 8801134 A ES8801134 A ES 8801134A ES 8801134 A ES8801134 A ES 8801134A ES 2006407 A6 ES2006407 A6 ES 2006407A6
Authority
ES
Spain
Prior art keywords
membrane
impurities
permeoselective
lye
bayer process
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
Application number
ES8801134A
Other languages
English (en)
Inventor
Gregory P Brown
Otto Tschamper
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.)
Rio Tinto Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium AG
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 Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Publication of ES2006407A6 publication Critical patent/ES2006407A6/es
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B01D61/445—Ion-selective electrodialysis with bipolar membranes; Water splitting
    • 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
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
    • 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
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
    • C01F7/473—Removal of organic compounds, e.g. sodium oxalate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Urology & Nephrology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

EN PROCEDIMIENTO PARA LA DISMINUCION DE LAS IMPUREZAS INORGANICAS Y ORGANICAS DISUELTAS EN LEJIAS ACUOSAS EN EL PROCESO BAYER PARA LA PREPARACION DE HIDROXIDO DE ALUMINIO SE UTILIZAN ADICIONES QUE HACEN NECESARIAS REALIZACIONES COSTOSAS DEL PROCEDIMIENTO Y UN CONSUMO AUMENTADO DE LEJIA, LO CUAL ELEVA LOS COSTOS DE PRODUCCION Y NO GARANTIZA EN TODOS LOS CASOS UNA BUENA CALIDAD DEL PRODUCTO.ESTAS DESVENTAJAS PUEDEN EVITARSE SI LA LEJIA PV IMPURIFICADA ES SOMETIDA A UNA ELECTRODIALISIS CON UTILIZACION DE POR LO MENOS UNA MEMBRANA PERMEOSELECTIVA PARA ANIONES Y/O POR LO MENOS UNA MEMBRANA PERMEOSELECTIVA PARA CATIONES Y POR LO MENOS UNA MEMBRANA BIPOLAR, QUE DISOCIDA EL AGUA, CON FORMACION DE UNA COMPONENTE DE LEJIAS ALCALINA PR, QUE ES AGREGADA A LA LEJIA EN CIRCUITO DEL PROCESO BAYER, Y DE UNA COMPONENTE DE IMPUREZAS V, QUE ES RETIRADA DEL PROCESO Y DESECHADA.
ES8801134A 1987-04-15 1988-04-13 Procedimiento para la disminucion de las impurezas em lejias del proceso bayer. Expired ES2006407A6 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH146887 1987-04-15

Publications (1)

Publication Number Publication Date
ES2006407A6 true ES2006407A6 (es) 1989-04-16

Family

ID=4211189

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8801134A Expired ES2006407A6 (es) 1987-04-15 1988-04-13 Procedimiento para la disminucion de las impurezas em lejias del proceso bayer.

Country Status (8)

Country Link
EP (1) EP0309509A1 (es)
CN (1) CN88102321A (es)
AU (1) AU610158B2 (es)
BR (1) BR8806904A (es)
ES (1) ES2006407A6 (es)
GR (1) GR880100210A (es)
HU (1) HUT52005A (es)
WO (1) WO1988007975A1 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0310553A1 (de) * 1987-10-01 1989-04-05 Alusuisse-Lonza Services Ag Verfahren zur Verringerung von Verunreinigungen in Laugen beim Bayer-Prozess
US5135626A (en) * 1988-12-01 1992-08-04 Allied-Signal Inc. Method for purification of bases from materials comprising base and salt
US4976838A (en) * 1988-12-01 1990-12-11 Allied-Signal Inc. Method for purification of bases from materials comprising base and salt
WO1990012637A2 (en) * 1989-03-15 1990-11-01 Pulp And Paper Research Institute Of Canada Electrodialytic water splitting process for the treatment of aqueous electrolytes
FR2729305A1 (fr) * 1995-01-18 1996-07-19 Atochem Elf Sa Regeneration d'acides organiques forts par des membranes bipolaires
DE19604903A1 (de) * 1996-02-10 1997-08-14 Huels Chemische Werke Ag Verfahren zur Abtrennung von Lauge aus Kondensationsharzen
US5709790A (en) * 1996-10-03 1998-01-20 Sachem, Inc. Electrochemical process for purifying hydroxide compounds
US5753097A (en) * 1996-10-03 1998-05-19 Sachem, Inc. Process for purifying hydroxide compounds
DE19856376A1 (de) 1998-12-07 2000-06-08 Basf Ag Verfahren zur Herstellung oder Reinigung von Oniumhydroxiden mittels Elektrodialyse
CN104016388B (zh) * 2014-06-12 2016-03-30 合肥工业大学 一种氧化铝生产中碱性料液的分离方法
CN110510714A (zh) * 2019-08-26 2019-11-29 北京廷润膜技术开发股份有限公司 一种电渗析装置和利用电渗析装置分离碱和盐的方法
CN113044863B (zh) * 2021-04-25 2022-06-21 百色学院 一种提高氧化铝生产中种分分解率的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219396A (en) * 1979-08-03 1980-08-26 Allied Chemical Corporation Electrodialytic process
US4238305A (en) * 1979-10-29 1980-12-09 Allied Chemical Corporation Electrodialytic process for the conversion of impure soda values to sodium hydroxide and carbon dioxide
US4592817A (en) * 1984-12-03 1986-06-03 Allied Corporation Electrodialytic water splitting process for gaseous products

Also Published As

Publication number Publication date
HUT52005A (en) 1990-06-28
GR880100210A (el) 1989-01-31
WO1988007975A1 (fr) 1988-10-20
AU610158B2 (en) 1991-05-16
CN88102321A (zh) 1988-11-02
BR8806904A (pt) 1989-10-31
AU1543388A (en) 1988-11-04
EP0309509A1 (de) 1989-04-05

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20000601