grinding dry ball mill - Grinding & Classification Circuits - Metallurgist & Mineral Processing Engineer

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grinding dry ball mill (1 reply)

6 years ago

Mahdi 6 years ago

Hi my friends

We production dry Iron Cocentrate with grade 65.5% without water. One of our problems is to grinding iron ore up to 75 microns.After charging balls in the mill, larger(50&40mm) balls at the end of the mill and smaller balls(25&30mm) mills are located at the beginning of the mill,which reduces the effective grinding.Is it possible to dry the ball mill with a 75 micron product? Is there a way to avoid moving bigger balls in the mill?
characteristics ball mill:

Mill length=6m

Mill Diameter=2.2m

F80=2.5mm

P80=156micron

Types of balls=50mm,40mm,30mm,25mm

Critical speed Mill=63%

FarshidBsr

6 years ago

FarshidBsr 6 years ago

Hey Mehdi,
What is the type of mill liner? Classifying liners may help to obtain a good classification of the grinding balls if it is a single-compartment ball mill.
Regards,

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