Bayer process for production of alumina trihydrate, the said...

Details Bayer process for production of alumina trihydrate, the said... Bayer process for production of alumina trihydrate, the said...

2005-09-19

2010-10-05

Bos, Steven (Department: 1793)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

C423S122000, C423S123000, C423S124000, C423S625000, C423S629000, C137S563000, C366S136000, C239S127000, C222S318000, C209S160000, C209S500000, C023S297000, C023S299000, C023S30500F

Reexamination Certificate

active

07807119

ABSTRACT:
A process for the production of alumina trihydrate by alkaline digestion of bauxite using the Bayer process in which aluminate liquor and insoluble residues are separated using a solid/liquid separation device (E; W2; DC) characterised in that the said slurry (21a;41; 230′) is at least partially passed through a hydrocyclone (H1; H21; H22; H3) to improve and accelerate the separation of the sodium aluminate liquor from the insoluble residues in the slurry (21a;41; 230′) containing the said liquor and the said residues and that supplies or is derived from the said liquid-solid separation device. In a first embodiment, at least one hydrocyclone is used at the upstream side of the settler-thickener, as clarifier of the pregnant liquor. In a second embodiment, at least one hydrocyclone is used as a thickener of insoluble residue mud. In a third embodiment, a hydrocyclone is used in combination with the causticisation settler.

REFERENCES:
patent: 4328094 (1982-05-01), Peck et al.
patent: 5869020 (1999-02-01), Rijkeboer et al.
patent: 6340033 (2002-01-01), Paradis et al.
patent: 19903011 (2000-08-01), None
patent: 2718982 (1995-10-01), None

Affiliated with

Also associated with

Rating

Bayer process for production of alumina trihydrate, the said... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bayer process for production of alumina trihydrate, the said..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bayer process for production of alumina trihydrate, the said... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4171738