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:
Nov. 29, 2011
Filed:
Nov. 19, 2008
Applicants:
Alexander Hagedorn, Pulheim, DE;
Meinhard Frangenberg, Kürten, DE;
Inventors:
Alexander Hagedorn, Pulheim, DE;
Meinhard Frangenberg, Kürten, DE;
Assignee:
KHD Humboldt Wedag GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C 23/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A closed-circuit grinding plant for grinding coarse material into a fine material, in particular for generating cement raw meal and/or cement from cement clinker, the plant having at least two roller presses disposed about a central riser shaft which pneumatically transports the fine material or pulverizing the coarse material, at least two sifters for separating the fine material generated during the pulverization from still existing coarse material, and at least two fine material settling devices for settling the fine material from the sifting air of the sifters.