### A Direct Approach Of Modeling Batch Grinding In Ball Mills

Apr 01, for all size classes of particles and all collisions associated with various levels of energy, a population balance equation for a batch grinding mill can be written as: (2) d m i (t) d t =− ∑ k=1 n λ k m i,k m i (t) h + ∑ k=1 n ∑ j=1 i−1 λ k m j,k b ij,k m j (t) h. download : download full-size image. fig..