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:
May. 06, 2014
Filed:
Apr. 11, 2012
Massimo Giuseppe Maccagni, Sesto San Giovanni, IT;
Jonathan Hylkjier Nielson, Rolla, MO (US);
William Leonard Lane, Viburnum, MO (US);
David Michael Olkkonen, Viburnum, MO (US);
Massimo Giuseppe Maccagni, Sesto San Giovanni, IT;
Jonathan Hylkjier Nielson, Rolla, MO (US);
William Leonard Lane, Viburnum, MO (US);
David Michael Olkkonen, Viburnum, MO (US);
Metals Technology Development Company, LLC, St. Louis, MO (US);
Abstract
A system for recovering lead from lead-bearing materials by circulating an aqueous solution of ferric fluoroborate in fluoroboric acid through a leaching vessel to leach lead from the lead-bearing material and an electrolytic cell for recovering the lead includes a cooler for cooling at least a portion of the circulating solution sufficiently to precipitate alkali salts and alkali-earth salts, and a filter for removing the precipitated salts from the solution. A process for recovering lead from lead-bearing materials by leaching the lead from the lead-bearing material with a solution of ferric fluoroborate in fluoroboric acid and recovering the lead from the solution includes cooling at least a portion of the circulating solution sufficiently to precipitate alkali salts and alkali-earth salts, and filtering the salts from the solution.