The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2026
Filed:
Oct. 05, 2021
Applicant:
Khd Humboldt Wedag Gmbh, Cologne, DE;
Inventor:
Marc Feiss, Cologne, DE;
Assignee:
KHD Humboldt Wedag GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 7/44 (2006.01); C04B 7/43 (2006.01); C04B 7/47 (2006.01);
U.S. Cl.
CPC ...
C04B 7/4476 (2013.01); C04B 7/432 (2013.01); C04B 7/475 (2013.01);
Abstract
A method for the thermal treatment of clays by: preheating the clay, which is suspended in a carrier gas, in a heat exchanger; thermally treating the clay in a calcination stage operated under chemically oxidizing conditions; subsequently thermally treating the clay in a calcination stage operated under chemically reducing conditions; cooling the clay in a cooling stage operated under chemically reducing conditions; cooling the clay in a cooling stage operating under chemically oxidizing conditions.