US Patent Issued to Speira on June 10 for "Storage-stable spent potlining material, method for the production thereof, and use of the same as fuel" (German Inventors)

ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,835, issued on June 10, was assigned to Speira GmbH (Grevenbroich, Germany).

"Storage-stable spent potlining material, method for the production thereof, and use of the same as fuel" was invented by Ralf Lemke (Nettetal, Germany), Olaf GuBgen (Cologne, Germany), Kathrin Eckhard (Cologne, Germany), Joachim Hofler (Roetgen, Germany), Andreas Beermann (Oberhausen, Germany) and Thorsten Kensy (Huckelhoven, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Spent potlining material contains spent potliner from aluminium electrolysis cells, and at least one hydrophobic binder. The hydrophobic binder being selected from wax, a waxlike compound or mixtu...