AU2296988A - Process for decreasing contamination in caustic alkalis in the bayer process - Google Patents

Process for decreasing contamination in caustic alkalis in the bayer process

Info

Publication number
AU2296988A
AU2296988A AU22969/88A AU2296988A AU2296988A AU 2296988 A AU2296988 A AU 2296988A AU 22969/88 A AU22969/88 A AU 22969/88A AU 2296988 A AU2296988 A AU 2296988A AU 2296988 A AU2296988 A AU 2296988A
Authority
AU
Australia
Prior art keywords
caustic alkalis
bayer
decreasing contamination
contamination
decreasing
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.)
Granted
Application number
AU22969/88A
Other versions
AU612411B2 (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.)
Alcan Holdings 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 AU2296988A publication Critical patent/AU2296988A/en
Application granted granted Critical
Publication of AU612411B2 publication Critical patent/AU612411B2/en
Anticipated expiration legal-status Critical
Ceased 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Urology & Nephrology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
AU22969/88A 1987-10-01 1988-09-29 Process for decreasing contamination in caustic alkalis in the bayer process Ceased AU612411B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH381787 1987-10-01
CH3817/87 1987-10-01

Publications (2)

Publication Number Publication Date
AU2296988A true AU2296988A (en) 1989-04-06
AU612411B2 AU612411B2 (en) 1991-07-11

Family

ID=4264103

Family Applications (1)

Application Number Title Priority Date Filing Date
AU22969/88A Ceased AU612411B2 (en) 1987-10-01 1988-09-29 Process for decreasing contamination in caustic alkalis in the bayer process

Country Status (2)

Country Link
EP (1) EP0310553A1 (en)
AU (1) AU612411B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5049250A (en) * 1989-08-14 1991-09-17 Allied-Signal Inc. Electrodialytic treatment of aqueous solutions containing amino acids
CN113044863B (en) * 2021-04-25 2022-06-21 百色学院 Method for improving decomposition rate of seed precipitation in alumina production

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4423968Y1 (en) * 1966-09-05 1969-10-09
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
GR880100210A (en) * 1987-04-15 1989-01-31 Alusuisse Method for the impurities reduction in alkaline solutions of the bayer method

Also Published As

Publication number Publication date
AU612411B2 (en) 1991-07-11
EP0310553A1 (en) 1989-04-05

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