Method for the removal of mercury from sulphuric acid with...

Details Method for the removal of mercury from sulphuric acid with... Method for the removal of mercury from sulphuric acid with...

2004-07-16

2008-11-18

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

C423S531000, C210S914000

Reexamination Certificate

active

07452521

ABSTRACT:
This invention relates to a method for removing mercury from dilute sulphuric acid. According to the method sulphuric acid solution is scrubbed with an aqueous solution containing thiosulphate, which precipitates the mercury present in the sulphuric acid solution either as mercury sulphide or, in a chlorine-containing environment, as a mercury sulphide-mercury chloride double salt. The quantity of thiosulphate to be fed is adjusted so that it precipitates the mercury in the sulphuric acid solution, but still does not form elemental sulphur.

REFERENCES:
patent: 3873581 (1975-03-01), Fitzpatrick et al.
patent: 3932149 (1976-01-01), Melkersson
patent: 4354942 (1982-10-01), Kaczur et al.
patent: 4526768 (1985-07-01), Felix et al.
patent: 5324499 (1994-06-01), Sturgeoff et al.
patent: 6228270 (2001-05-01), Houlachi et al.
patent: 1 409 456 (1975-10-01), None
patent: 84/02123 (1984-06-01), None

Affiliated with

Also associated with

Rating

Method for the removal of mercury from sulphuric acid with... 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 the removal of mercury from sulphuric acid with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the removal of mercury from sulphuric acid with... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4042612