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. 27, 2007
Filed:
May. 14, 2003
Alexander Hagedorn, Pulheim, DE;
Frank Fischer-helwig, St. Augustin, DE;
Christian Splinter, Pulheim, DE;
Meinhard Frangenberg, Kürten-Engeldorf, DE;
Alexander Hagedorn, Pulheim, DE;
Frank Fischer-Helwig, St. Augustin, DE;
Christian Splinter, Pulheim, DE;
Meinhard Frangenberg, Kürten-Engeldorf, DE;
KHD Humboldt Wedag GmbH, Cologne, DE;
Abstract
The aim of the invention is to create a compact circulating grinding plant comprising a product bed comminution roller mill or roller press and a sifter device, in which the problem of mechanically transporting the grinding product that is directed through the circuit is minimized. Said aim is achieved by a circulating grinding plant in which a static cascade sifter is disposed below the gap of the roller press while a subsequent sifter, particularly a dynamic rod basket sifter, is disposed above said roller press. The sifting product discharge area of the static cascade sifter is connected to the sifting air and sifting product inlet of the subsequent sifter via an ascending duct which pneumatically conveys the product.