Dear All
Normally the slot size in a close ckt mill is such that Idiaphragm it is 6 to 8 mm while for II diapgragm it is 8 to 10mm .
But In Polysius mills it is opposite means low size slots in II & higher in I diaphram plates.
Can anybody clarify why?
How the slot size is decided?
ENGR
In a conventional closed circuit ball mill,to prevent the clinker nibs entering to second chamber of the ball mill, first chamber slot size has been kept 6-8 mm by different manufacture.Second chamber diapharagm slot size has been kept 8-10mm.Polysius mill designer also follows the same industrial design norms.