Method for Improved Agitator Milling of Solid Particles
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United States of America Patent
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Issued Date -
May 22, 2008
app pub date -
Nov 6, 2007
filing date -
Nov 21, 2006
priority date (Note) -
Abandoned
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Abstract
A method for the agitator milling of solid particles, particularly of titanium dioxide, where the suspension with a maximum particle size of 2 .mu.m is milled in closed-circuit mode and subjected to continuous classification by sedimentation in a tank after each pass through the mill. The method results in milled solid particles with narrower particle size distributions, particularly titanium dioxide pigments with improved optical properties, such as tinting strength and gloss.
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