Method for recovering metal and chemical values

C - Chemistry – Metallurgy – 22 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C22B 7/02 (2006.01) C21B 13/00 (2006.01) C22B 3/46 (2006.01) C22B 5/10 (2006.01) C22B 7/00 (2006.01) C22B 19/28 (2006.01) C22B 19/30 (2006.01) C22B 19/34 (2006.01)

Patent

CA 2199268

A method for recovering metals from industrial waste streams (500) which entails treating the waste streams with an ammonium chloride solution (100), separating the undissolved precipitates comprising iron compounds from the leachant solution, further treating the undissolved precipitants by elevated temperature roasting resulting in an iron-based feedstock (200), displacing metal ions including lead and cadmium from the solution using zinc metal, further treating the solution to remove zinc compounds therefrom, further treating the zinc compounds and the undissolved components with a dissolving solution, and further treating the displaced metal ions to recover lead, cadmium and zinc therein using various methods including electrolysis.

Cette invention se rapporte à un procédé pour récupérer les métaux contenus dans des effluents (500) de déchets industriels, qui consiste à traiter ces déchets avec une solution de chlorure d'amonium (100), à séparer de la solution de lessivage les précipités non dissous renfermant des composés à base de fer, puis à traiter ces précipités non dissous par grillage à température élevée, de façon à produire une charge d'alimentation (200) à base de fer, à extraire les ions métalliques, plomb et cadmium notamment, de la solution à l'aide de zinc, puis à traiter cette solution pour en éliminer les composés de zinc, à traiter ensuite ces composés de zinc et les composés non dissous au moyen d'une solution dissolvante, puis à traiter encore les ions métalliques extraits, afin d'en récupérer le plomb, le cadmium et le zinc, à l'aide de diverses techniques, telles que l'électrolyse.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for recovering metal and chemical values 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 for recovering metal and chemical values, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovering metal and chemical values will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1786600

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.