ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,509, issued on June 24, was assigned to Scandium International Mining Corp. (Reno, Nev.).
"Byproduct scandium recovery from low grade primary metal oxide ores" was invented by Willem P. C. Duyvesteyn (Reno, Nev.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for extracting metal values from a low grade primary metal oxide ore feedstock is provided. The method includes providing a low grade primary metal oxide ore containing a primary metal and scandium; subjecting the ore to acid leaching, thus yielding an acidic leachate; extracting the primary metal and scandium from the leachate, thereby yielding an acidic barren leachate; and using the ...