Method and plant for regenerating sulfate electrolyte in steel s

Details Method and plant for regenerating sulfate electrolyte in steel s Method and plant for regenerating sulfate electrolyte in steel s

1996-02-14

1997-11-25

Bell, Bruce F.

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Treating process fluid by means other than agitation or...

204206, 204238, 204DIG13, 205101, 210712, 210722, 210724, C25D 2118

Patent

active

056908040

ABSTRACT:
A method and a plant for regenerating zinc sulfate electrolyte in steel strip electrogalvanizing processes by precipitating dissolved iron from electrolyte circulating through a coating cell. A partial quantity of the circulating electrolyte to be regenerated is removed from the coating cell and the dissolved iron is oxidized to Fe.sup.3+ by a redox-controlled addition of oxidizing agents. Subsequently, by raising the pH value to the precipitation limit of Fe.sup.3+ by a controlled addition of a ZnO/water suspension or a ZnCO.sub.3 /water suspension, the dissolved iron is precipitated as sludge. Any excess ZnO or ZnCO.sub.3 is then dissolved by adding fresh electrolyte. The precipitated iron sludge is conducted through a suitable filter such as a filter press, a filter belt, a decanter, etc., and the precipitated iron is filtered out in this manner. Subsequently, the purified partial quantity of the electrolyte is returned to the coating cell.

REFERENCES:
patent: 2080506 (1937-04-01), Rinck et al.
patent: 2200987 (1940-05-01), Hubbell
patent: 3857765 (1974-12-01), Merker et al.
patent: 4416737 (1983-11-01), Austin et al.
patent: 5192418 (1993-03-01), Hughes et al.
Patent Abstracts Of Japan, vol. 13, No. 466 (C-646), 20. Oct. 1989 & JP-A-01 181000 (Kawasaki Steel Corporation), 18. Jul. 1989.

Affiliated with

Also associated with

Rating

Method and plant for regenerating sulfate electrolyte in steel s 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 and plant for regenerating sulfate electrolyte in steel s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and plant for regenerating sulfate electrolyte in steel s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2103628