Method of and plant for grinding pulverulent or granular materia

Details Method of and plant for grinding pulverulent or granular materia Method of and plant for grinding pulverulent or granular materia

1983-11-15

1986-04-15

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 24, 241 80, 241 97, 241119, B02C 1500

Patent

active

045822603

ABSTRACT:
A vertical roller mill has a grinding table (1), rollers (3) and a separator (6) for separating ground material, which is conveyed to the separator in an air stream supplied through an inlet (7), into a fine fraction, which passes out through an outlet (8), and a coarse fraction which is returned for further grinding through an outlet (10). A part of the ground material is conveyed through an outlet (11) to a second separator (13), where it is separated from the air and returned for further grinding via an outlet (14) and an inlet (9) for fresh material to the mill. This provides a flatter grain size distribution curve in the finish ground material.

REFERENCES:
patent: 2480998 (1949-09-01), Brackett
patent: 3002701 (1961-10-01), Kayatz
patent: 3375982 (1968-04-01), Lease
patent: 3951347 (1976-04-01), Tiggesbaumker et al.

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