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:
Jun. 16, 1981
Filed:
May. 31, 1979
Applicant:
Inventors:
David J Hollely, Misterton, near Doncaster, GB;
Norris W Shepherd, Worksop, GB;
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B02C / ;
U.S. Cl.
CPC ...
241 18 ; 241 23 ; 241 62 ; 241 65 ; 2411 / ; 241D / ;
Abstract
The production rate of a conventional cryogenic grinding system incorporating an impact mill may be increased by (a) providing means to allow at least 70% of the embrittled material entering the mill to leave the mill before it passes the inlet; and (b) providing means to restrict the flow of the cold gas through the impact mill. The product leaving the impact mill is screened and any oversize is preferably recycled to the impact mill.