Method for the recovery of group ia salts during treatment...

Details Method for the recovery of group ia salts during treatment... Method for the recovery of group ia salts during treatment...

C - Chemistry, Metallurgy

22

B

C22B 3/14 (2006.01)

Patent

CA 2293688

A method for the production of Group IA salts during a process for the recycling of industrial waste streams containing Group IA compounds and iron and/or zinc compounds, by heating the waste stream in a reducing atmosphere, treating the exhaust fumes from the heating step with an ammonium chloride leaching solution resulting in a Group IA salt containing precipitate, and recovering the Group IA salts from the precipitate.

L'invention a pour objet un procédé de production de sels du groupe IA qui s'inscrit dans un processus de recyclage des effluents industriels contenant des composés du groupe IA et des composés de fer et/ou de zinc. Le procédé consiste à chauffer les effluents industriels dans une atmosphère réductrice; à traiter les fumées d'échappement chauffées au stade précédent avec une solution lixiviante de chlorure d'ammonium pour obtenir un précipité contenant des sels du groupe IA; et à extraire du précipité les sels du groupe IA.

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