Effect of comminution kinetics parameters and classification efficiencies on capacity in the closed-circuit grinding of cement

Using a comminution kinetics equation and a classification efficiency equation, a simulation of closed-circuit grinding was carried out under the condition that the fineness is expressed by the sieving mass ratio. The higher the efficiency of classification, the more the production rate increases. Also, the powder passing rate through the mill, which is indicative of the maximum production rate, shifts to a higher value as classification efficiency increases. The parameters k and n have a specific relation under the usual condition of cement grinding. In this condition, the production rate increases with a decrease in the parameter n under 20 similar to 30 mu m of the over size ratio 19% particle diameter, But it increases with an increase in the parameter n over the diameter.