C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
23/239
C01F 7/06 (2006.01) C01F 7/04 (2006.01) C01F 7/47 (2006.01) C22B 21/04 (2006.01)
Patent
CA 1222121
ABSTRACT OF THE DISCLOSURE: In a method processing contaminated sodium oxalate which becomes available in a separating stage succeeding the digestion of bauxite in accordance with the Bayer process chemicals used in the digesting process are recovered in that the moist sodium oxalate which has been separated is dried with the hot exhaust gases from a fluidized bed, particularly a circulating fluidized bed, jointly with aluminum hydroxide or aluminum oxide hydrate and/or reactive alumina at a mol ratio of aluminum to sodium of at least 0.8 and the dried product is decomposed in said fluidized bed at a temperature of 780 to 1000°C to form sodium aluminate. Suitably drying is effected by spray drying in direct contact with the exhaust gases of the fluidized bed and decomposition is effected at a tem- perature in the range from 850 to 950°C and with an Al:Na mole ratio not in excess of 1.2.
477697
Hirsch Martin
Koch Walter
Rosenthal Karlheinz
Schmidt Hans-Werner
Yetmen Yilmaz
Metallgesellschaft Aktiengesellschaft
Reynolds Metals Company
Robic Robic & Associes/associates
LandOfFree
Method of processing sodium oxalate formed during the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of processing sodium oxalate formed during the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of processing sodium oxalate formed during the... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1260178