The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2008
Filed:
Jul. 16, 2004
Dag Berg, Oslo, NO;
Jens Nyberg, Kokkola, FI;
Aija Rytioja, Kokkola, FI;
Heljä Peltola, Pori, FI;
Pekka Taskinen, Pori, FI;
Dag Berg, Oslo, NO;
Jens Nyberg, Kokkola, FI;
Aija Rytioja, Kokkola, FI;
Heljä Peltola, Pori, FI;
Pekka Taskinen, Pori, FI;
Outotec OYJ, Epsoo, FI;
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.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile