US Patent Issued to thyssenkrupp Polysius, thyssenkrupp on Sept. 1 for "Method and device for producing cement clinker" (German Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,002, issued on Sept. 1, was assigned to thyssenkrupp Polysius GmbH (Beckum, Germany) and thyssenkrupp AG (Essen, Germany).

"Method and device for producing cement clinker" was invented by Eike Willms (Dortmund, Germany) and Constantin Kimmig (Soest, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for producing cement clinker (50) including preheating raw material in a preheater, calcining the preheated raw material in a calciner, burning the preheated and precalcined raw meal in a kiln to form cement clinker, wherein the kiln is fed with a combustion gas having an oxygen content of more than 20% by volume, in particular more than 40...