ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,379,160, issued on Aug. 5, was assigned to S.A. Lhoist Recherche et Developpement (Ottignies-Louvain-la-Neuve, Belgium).

"Rotary kiln and method for burning carbonate-containing material, in particular limestone or dolomite" was invented by Carsten Kaczinski (Dortmund, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a rotary kiln for burning carbonate-containing material, in particular limestone or dolomite, including a rotary tube having an inlet end for feeding in the material to be burned and an outlet end for discharging the burned material; and a calciner unit which is arranged in the region of the outlet end,...