US Patent 7645372 Method for removing thallium from a zinc-containing solution

Patent 7645372 was granted and assigned to Outotec on January, 2010 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Outotec

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

76453720

Patent Inventor Names

Aimo Järvinen0

Date of Patent

January 12, 2010

Patent Application Number

105488600

Date Filed

February 24, 2004

Patent Primary Examiner

‌

Joseph Patrick Ryan

Patent abstract

This invention relates to a method for removing thallium from a zinc-containing solution. In particular, the method relates to the purification with metallic zinc powder of a solution going to the electrolytic production of zinc. In this method, thallium is removed by means of a lead compound in the solution purification stage, either during the final purification stage or in a purification stage in which cadmium is precipitated.