ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,672, issued on March 25, was assigned to Massachusetts Institute of Technology (Cambridge, Mass.).
"Selective sulfidation and desulfidation" was invented by Antoine Allanore (Brentwood, N.H.) and Caspar R. Stinn (Magnolia, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments utilize selective sulfidation and/or desulfidation for such things as ore and concentrate cracking, metal separation, compound production, and recycling. Selective sulfidation can be used to selectively convert an oxide or other material in a feedstock to a sulfide or other sulfur-containing material, and selective desulfidation can be used to selectively co...