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:
Apr. 08, 1986
Filed:
May. 08, 1985
Bernard H Morrison, Mississauga, CA;
John G Lenz, Pierrefonds, CA;
Jacques Pageau, Montreal, CA;
J Gerald Bard, Brossard, CA;
Noranda Inc., Toronto, CA;
Abstract
A process for treating anode slimes originating from copper, lead or nickel electrorefining to recover the precious metals contained therein is disclosed. The process comprises the steps of charging the slimes into a tiltable and rotatable top blown rotary converter (TBRC), smelting the slimes in the TBRC while it is rotated on an axis inclined to the horizontal to form a slag phase and a precious metals containing phase, tilting the TBRC and skimming the slag produced during smelting, and blowing an oxidizing gas onto or into the precious metals containing phase remaining in the TBRC while rotating the same on its axis inclined to the horizontal to remove impurity elements some of which enter a gas phase and some a new slag phase until a precious metals containing bullion suitable to be treated in a parting plant is obtained.