Abstract: A process for recovering a metal chloride or mixed metal chloride from a solid waste material comprising recoverable metal containing constituents produced by lead, copper or zinc smelting and refining processes, said process comprising the steps of: (i) heating the solid waste material; (ii) treating the heated material of step (i) with a gaseous chloride to form a gaseous metal chloride containing product; and (iii) treating the gaseous metal chloride containing product of step (ii) to recover the metal chloride or mixed metal chloride. The metal chloride may be further treated to extract the metal itself.
Type:
Grant
Filed:
January 15, 2010
Date of Patent:
February 3, 2015
Assignee:
Minex Technologies Limited
Inventors:
Robert John Bowell, Keith Phillip Williams, Brian Matthew Dey
Abstract: A process for recovering a metal chloride or mixed metal chloride from a solid waste material comprising recoverable metal containing constituents produced by lead, copper or zinc smelting and refining processes, said process comprising the steps of: (i) heating the solid waste material; (ii) treating the heated material of step (i) with a gaseous chloride to form a gaseous metal chloride containing product; and (iii) treating the gaseous metal chloride containing product of step (ii) to recover the metal chloride or mixed metal chloride. The metal chloride may be further treated to extract the metal itself.
Type:
Application
Filed:
January 15, 2010
Publication date:
May 10, 2012
Applicant:
MINEX TECHNOLOGIES LIMITED
Inventors:
Robert John Bowell, Keith Phillip Williams, Brian Matthew Dey
Abstract: A process for extracting a precious metal from a precious metal containing source is provided comprising the steps of: —(i) contacting the precious metal-containing source with a vapor phase chloride salt; (ii) condensing the precious metal containing volatile product of step (i); and (iii) recovering the precious metal from the condensed product of step (ii).