Vertical mill

Details Vertical mill Vertical mill

2011-01-11

2011-01-11

Francis, Faye (Department: 3725)

Solid material comminution or disintegration

Apparatus

Plural rotary or oscillatory surfaces cooperate with common...

Reexamination Certificate

active

07866584

ABSTRACT:
The invention relates to a vertical mill comprising a grinding track (1) and at least one grinding roller (2). The grinding track (1) is provided with a central zone (Ia) made of a harder material and two laterally adjacent edge zones (Ib, Ic) made of a softer material. The width (a) of the central zone (Ia) is smaller than or equal to the width of the grinding roller (2).

REFERENCES:
patent: 984584 (1911-02-01), McCone et al.
patent: 5524840 (1996-06-01), Gygi
patent: 6138933 (2000-10-01), Chevalier et al.
patent: 957 435 (1956-08-01), None
patent: 195 03 179 (1996-08-01), None

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