Removal of oxalate from Bayer process liquor

Details Removal of oxalate from Bayer process liquor Removal of oxalate from Bayer process liquor

1980-01-22

1981-06-23

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423121, 423127, 23301, 23302T, C01F 706, C01F 746

Patent

active

042750423

ABSTRACT:
Sodium oxalate in supersaturated solution in Bayer spent liquor stabilized by the presence of humic material is precipitated by the treatment with cationic sequestrants which interact with the humic material to give an insoluble product, thus removing it from solution and destabilizing the solution with respect to precipitation of sodium oxalate. Preferred cationic sequestrants are quaternary nitrogen compounds including medium or long chain alkyl groups. Precipitation of sodium oxalate can be expidited by addition of seed crystals and/or addition of sodium oxalate solution which is supersaturated at a temperature higher than that of the spent liquor.

REFERENCES:
patent: 3337305 (1967-08-01), Byrns
patent: 3457032 (1969-07-01), Breteque
patent: 3899571 (1975-08-01), Yamada et al.
patent: 4038039 (1977-07-01), Carruthers
patent: 4046855 (1977-09-01), Schepers et al.
patent: 4101629 (1978-07-01), Mercier et al.

Affiliated with

Also associated with

Rating

Removal of oxalate from Bayer process liquor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Removal of oxalate from Bayer process liquor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Removal of oxalate from Bayer process liquor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2207555