Grinding process
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United States of America Patent
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Jul 23, 1991
Grant Date -
N/A
app pub date -
Oct 19, 1988
filing date -
Oct 20, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process of grinding ceramic materials such as zirconia comprises grinding in an agitated media-type mill in the presence of a dispersant, the process being characterized in that the grinding media has a particle size of from 0.8 3.0 mm, and in that the quantity of media present is such that the average stand-off distance between adjacent media particles is from 30-90 um. The preferred apparatus is an attrition mill with an additional holding tank which allows recycling. The ceramic powders thus produced are fine with an unusually narrow particle size distribution.
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