How long will it take for High Pressure Grinding Mill to grind?

High Pressure Grinding Mill is a kind of vertical mill, professional improved, lime powder processing, effect is 30% higher than the same equipment, but many customers will ask a question, that is High Pressure Grinding Mill roller can use how long?
High Pressure Grinding Mill manufacturers slow roller is used in high manganese steel, very wear-resisting, more durable than general alloy steel roller grinding ring degree is higher, but this is not to define the service life of roller. High Pressure Grinding Mill in the process of running, roller played a leading role, to crush materials, contact the main host open, roller is unable to stop running, at present, none of the manufacturers can say the actual use of time, because of the lime of each district is different, even the air humidity, particle size, temperature, etc., can affect the actual service life of the roller, can only say that high manganese steel roller wear resistance than other material, use longer, change cycle is long.
I have a customer is India, he R type of Grinding Mill, lime powder processing have been 6 years, grinding roller and grinding ring not being replaced, the main reason is him lime structure is loose, and the material is dry, humid air, the several reasons to make his roller grinding ring is more durable, that in six years all don't need to change.