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:
Mar. 01, 1988
Filed:
Oct. 29, 1986
Applicant:
Inventors:
Helmut Duill, Cologne, DE;
Josef W Brummer, Cologne, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 18 ; 241 23 ; 241 24 ; 241 29 ; 241 61 ; 241 62 ; 241 78 ; 241580 ; 2411 / ;
Abstract
For reducing the specific energy outlay in the grinding-drying of damp initial material, a circulating grinding system including a comminution machine, particularly an impact hammer, which is followed, via a sifter, by a high-pressure roll press operated in accord with the principle of product bed comminution, whereby the product admission of an impact hammer mill is connected to the feed for fresh initial material and the product discharge of a roll press is in communication with a product admission and/or with a product discharge of an impact hammer mill.