Process for the selective recovery of the salt constituents...

Details Process for the selective recovery of the salt constituents... Process for the selective recovery of the salt constituents...

B - Operations, Transporting

01

D

B01D 9/02 (2006.01) C01D 3/08 (2006.01) C01D 9/00 (2006.01) C01F 11/18 (2006.01) C21D 1/46 (2006.01) C22C 22/00 (2006.01) C21D 1/607 (2006.01)

Patent

CA 2202416

In order to recover in an environmentally sound and economic manner used hardening shop salts which contain nitrate-nitrite the salts, comminuted to particle sizes of from 1 to 50 mm, are dissolved in a mixture of nitric acid and hydrogen peroxide without nitrogen oxides arising, and, by evaporation and cooling, potassium nitrate, sodium chloride and sodium nitrate are obtained sequentially by fractional crystallisation.

Pour récupérer d'une manière économique et respectueuse de l'environnement les sels utilisés dans les ateliers de trempe de l'acier qui contiennent des nitrates et des nitrites, les sels, broyés en particules de 1 à 50 mm, sont dissous dans un mélange d'acide nitrique et de peroxyde d'hydrogène sans formation d'oxydes d'azote, et après évaporation et refroidissement, le nitrate de potassium, le chlorure de sodium et le nitrate de sodium sont obtenus séquentiellement par cristallisation fractionnée.

Affiliated with

Also associated with

Rating

Process for the selective recovery of the salt constituents... 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 the selective recovery of the salt constituents..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the selective recovery of the salt constituents... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1827671