ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,234,530, issued on Feb. 25, was assigned to Mining and Process Solutions Pty Ltd (Melbourne, Australia) and Covoro Mining Solutions LLC (Memphis, Tenn.).
"Process for acidic leaching of precious and chalcophile metals" was invented by Elsayed Abdelrady Oraby (Beckenham, Australia) and Jacobus Johannes Eksteen (Bull Creek, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A process for recovery of one or more elements, selected from precious metals and chalcophile metals as herein defined, from materials containing precious and/or chalcophile metal/s, said process including: (i) a leaching step comprising contacting the material with an acidic sol...