Fine grinding roller mill

Details Fine grinding roller mill Fine grinding roller mill

2011-06-21

2011-06-21

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Apparatus

Plural rotary or oscillatory surfaces cooperate with common...

Reexamination Certificate

active

07963471

ABSTRACT:
A roller mill10for pulverizing fine material has a grinding mechanism that includes a plurality of grinding rolls64and a grinding ring66that coact to pulverize material within a mill housing. The grinding ring has an inner grinding surface wherein the inner surface includes an upper vertical portion and inwardly sloped lower portion. The lower portion of the ring provides a means for retaining more fine particles on the ring during pulverizing, as well as an increase in grinding surface. The grinding rolls have a generally cylindrical shape with an outer grinding surface that includes an upper vertical portion and a lower portion of the outer grinding surface. The outer grinding surface of the roll is complementary to the inner grinding surface of the grinding ring.

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