Recovery of zinc from galvanized coatings

Details Recovery of zinc from galvanized coatings Recovery of zinc from galvanized coatings

2005-04-12

2005-04-12

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

C423S101000, C423S102000, C423S105000

Reexamination Certificate

active

06878356

ABSTRACT:
A method for extraction of zinc values from an aqueous alkaline solution of zinc, especially a solution obtained by the stripping of a galvanized coating from a ferrous metal product e.g. steel, or from electric arc furnace dust. The method comprises subjecting the aqueous alkaline solution to solvent extraction using an organic solution of an oxine i.e. an organic extractant containing an 8-hydroxyquinoline group, and separating the organic solution from aqueous alkaline solution. Zinc values are recovered from the organic solution e.g. by stripping with acid and subjecting the resultant aqueous solution containing zinc values for recovery of zinc e.g. to electrowinning or to precipitation of zinc carbonate. The method may be used in the preparation of galvanized steel for recycle to a steel manufacturing plant, with recovery of zinc and for recovery of zinc values from electric arc furnace dust.

REFERENCES:
patent: 3971843 (1976-07-01), Helgorsky et al.
patent: 5277883 (1994-01-01), Turcotte et al.
patent: 6077486 (2000-06-01), Spitzer

Affiliated with

Also associated with

Rating

Recovery of zinc from galvanized coatings does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovery of zinc from galvanized coatings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of zinc from galvanized coatings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3406520