ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,215,037, issued on Feb. 4, was assigned to Evergreen Alumina LLC (Beckley, W.va.).

"Systems and methods for recovering salts, aluminum, alumina and ammonia from salt slag waste generated in aluminum recycling" was invented by Riley Davis Robbins (Beckley, W.va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosed technology includes a method for producing ultrafine alumina from salt slag waste generated in aluminum recycling useful in the manufacture of durable ceramic products; a system for recovering alumina from salt slag waste; a method and systems for recovering salts, aluminum and alumina from salt slag waste; and a method and systems of ca...