Grinding process

Details Grinding process Grinding process

1988-10-19

1991-07-23

Schmidt, Frederick R.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241184, 241 22, 51317, B02B 502, B01B 100, B24B 100

Patent

active

050336827

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.

REFERENCES:
patent: 2764359 (1959-09-01), Szegvari
patent: 3149789 (1964-09-01), Szegvari
patent: 3998938 (1976-12-01), Szegvari
patent: 4059232 (1977-11-01), Engels
patent: 4274599 (1981-06-01), Manfroy et al.
patent: 4448609 (1984-05-01), Tear
patent: 4496106 (1985-01-01), Gross
Mankosa, Power Technology, 1986, 7-82.
Mankosa et al., Power Technology, 49:75-82 (1986).

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