Prediction of the product size distribution in associations of stirred bead mills

In order to determine the operating conditions leading to a product with a given particle size distribution, a study has been made of the influence of the operating parameters (stirrer speed, solids concentration, bends diame ter) on the particle size distribution of the product obtained in wet fine grinding in a stirred bead mill. Combination of the results of this study w ith a flow model through the mill leads to a model of the continuous grindi ng process. This model suggests that the spreading of the particle size dis tribution could be reduced either in multiplying the number of mills associ ated in series, nor in multiplying the number of passages through the same mill. Experiments made with the same overall residence time confirm this as sumption.