with 62% of C3S and 0.68 free lime and LSF of 95%  and C/K of 1.28 ,we use the same clinker to produce cement from 2 grinding mills . 

the problem is that one of the mills is giving me a poor production , it decrease from a mill output of 99 t/h to 82 t/h . 

the (99 t/h ) parametters were : 59 C3S , 0.5 free lime , LSF 95 and C/K of 1.16 

please answer me and thanks for your valuable informations .