Ultrafine grinding mill of which fed material flows down through an agitated bed composed of small grinding medium
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United States of America Patent
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-
Nov 2, 1993
Grant Date -
N/A
app pub date -
May 1, 1992
filing date -
May 8, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ultrafine grinding mill in which fed material flows down through an agitated bed composed of small grinding medium characterized in that the ultrafine grinding mill comprises a vertically arranged cylindrical housing, a net member having a mesh size preventing the grinding medium from passing therethrough and arranged at the bottom of the cylindrical housing, a rotary shaft arranged on a central axis of the cylindrical housing, and agitating blades mounted at several stages on the rotary shaft, and in that both a gap between the tip of each agitating blade and the inner surface of the cylindrical housing and a gap between the agitating blade of the lowermost stage and the net member are not more than 2/3 the diameter of the grinding medium at room temperature.
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