Modified pyrohydrolysis process for spent aluminum reduction...

Details Modified pyrohydrolysis process for spent aluminum reduction... Modified pyrohydrolysis process for spent aluminum reduction...

C - Chemistry, Metallurgy

01

F

23/166, 23/180

C01F 7/04 (2006.01) C01B 7/19 (2006.01) C01F 7/50 (2006.01) C25C 3/08 (2006.01)

Patent

CA 1099079

ABSTRACT OF THE DISCLOSURE Fluoridic spent and waste materials, such as are generated in electrolytic aluminum reduction systems, are pyrohydrolyzed in a fluidized bed reactor. For fluidiza- tion of these materials, as well as for the combustion of carbon present in the materials, an 02-containing gas Stream containing at least about 90% by volume 02, is employed. This results in the generation of an HF-contain- ing offgas of significantly increased HF level, which can be employed for the manufacture of an AlF3 product of at least about 85% by weight AlF3 content from hydrated alumina. The offgas having the increased HF content can also be employed for the production of highly concentrated HF acid with significantly lower energy requirement needed for concentration than in conventional systems.

323853

Affiliated with

Also associated with

Rating

Modified pyrohydrolysis process for spent aluminum reduction... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Modified pyrohydrolysis process for spent aluminum reduction..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified pyrohydrolysis process for spent aluminum reduction... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-542021