Process for recovering aluminum and other metals from fly ash

Details Process for recovering aluminum and other metals from fly ash Process for recovering aluminum and other metals from fly ash

C - Chemistry, Metallurgy

22

B

53/236

C22B 21/00 (2006.01) B01D 49/00 (2006.01) B01D 53/68 (2006.01) C01B 33/107 (2006.01) C01F 7/60 (2006.01) C01G 23/02 (2006.01) C01G 49/10 (2006.01) C22B 7/02 (2006.01)

Patent

CA 1138649

PROCESS FOR RECOVERING ALUMINUM James E. Reynolds AND OTHER METALS FROM FLY ASH Alan R. Williams ABSTRACT OF THE INVENTION A process for recovering aluminum from fly ash con- taining iron, silicon and titanium which comprises: (a) chlorinating the fly ash in an oxidizing atmosphere to selectively chlorinate and vaporize iron chloride from the remaining chlorides, (b) chlorinating the residue from step (a) in a reducing atmosphere of carbon monoxide, in the presence of added silicon chloride to suppress the chlorination of silicon, and vaporizing the chlorides of aluminum, silicon, titanium, and the residual iron, (c) separating and recovering the vaporized chlorides by selective condensation, and treating the residue of step (b) with sulfuric acid to convert calcium chloride to gypsum, and to regenerate a chloridizing and binder solution for pelletizing fly ash feed.

320043

Affiliated with

Also associated with

Rating

Process for recovering aluminum and other metals from fly ash does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for recovering aluminum and other metals from fly ash, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for recovering aluminum and other metals from fly ash will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-695628