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:
Oct. 04, 1994
Filed:
Jul. 21, 1992
Applicant:
Inventors:
Donald A Longhurst, Marietta, GA (US);
Norbert Patzelt, Beckum, DE;
Assignee:
Krupp Polysius AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 21 ; 241 23 ;
Abstract
The invention relates to a method and apparatus for the comminution of brittle material for grinding, particularly send-like material such as metallurgical sand in the roller gap of a material bed roller mill. In order to create an optimum capacity for drawing in the material for grinding in the roller gap, the material for grinding at the inlet to the roller gap is set to a (mixed) moisture content of approximately 0.3 to 3.0%, preferably approximately 0.5 to 2.0%.