Fine grinding roller mill

Details Fine grinding roller mill Fine grinding roller mill

2007-11-14

2010-02-23

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

C241S057000, C241S079100, C241S080000, C241S119000, C241S129000

Reexamination Certificate

active

07665681

ABSTRACT:
A roller mill for pulverizing material and separating the pulverized material has a mill for crushing the material and a classifier disposed on the mill for separating the crushed material. The mill includes a grinding mechanism that has a plurality of grinding rolls and a grinding ring that coact to pulverize material within a mill housing, which defines a grinding chamber. The classifier is a centrifugal-type classifier having a motor-driven rotor disposed within a classifier housing, which define a classifying chamber. The rotor has a plurality of blades that extend outwardly from the rotor. As the rotor rotates within the classifying chamber, the blades separate fine sized particles from oversized particles by passing the finer sized particles through the blades, and contacting and propelling the oversized particles against the classifier housing. The oversize particles fall downward through an outer annular passage defined by a baffle and the mill housing back to the grinding mechanism. The baffle is disposed along the inner periphery of the mill housing spaced at a distance from the mill housing to provide an inner passage and an outer annular passage. The inner passage directs particle-laden air upward through the grinding chamber to the classifier. The goat annular passage receives and directs the oversized particles downward to the grinding mechanism of the mill through an opening at the bottom of the outer annular passage for directing the oversized particles to the grinding mechanism.

REFERENCES:
patent: 4640464 (1987-02-01), Musto et al.
patent: 5279466 (1994-01-01), Williams
patent: 5330110 (1994-07-01), Williams
patent: 6902126 (2005-06-01), Chen et al.
patent: 7028837 (2006-04-01), Chen et al.
patent: 58-92467 (1983-06-01), None
patent: 6-55088 (1994-03-01), None
PCT International Search Report and The Written Opinion of the International Searching Authority dated Oct. 3, 2009—(PCT/US2008/083849).

Affiliated with

Also associated with

Rating

Fine grinding roller mill does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fine grinding roller mill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fine grinding roller mill will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4209758