Cement mill 1st & 2nd chamber load

Dear Experts,

I read some where that in cement 2chamber ball mills 1st chamber grinding media

4.5 mt/m3 and in 2nd chamber it is more i.e. 4.6 mt/m3.

Could you send me the calculation for above in below mail Id

email:<dadhichss2004@yahoo.com>

Thanks with regardss,

Dadhich