The SUBMILL complies with modern grinding technology: instead of one or two passes through the mill with reduced throughput, it is more effective to increase the number of passes with higher output. In fact, it is proven that the disadvantage of a continuous mill - vertical or horizontal, is that the residual time of the different pigment particles is not the same. Some particles stay longer in the grinding chamber whereas others will exit more quickly. The SUBMILL system on the other hand has a combination of expulsion and suction ensuring that all the base product passes through the grinding chamber many hundreds of times during the operation and is progressively and uniformly processed. With the SUBMILL process system, there is a direct relationship between particle residual time and particle size distribution. At the and of the process, the finess spectrum is very narrow and the colour strength is duly achieved.
Milling time is directly proportional to the diameter and density of Grinding Media. The number of contact points in a given volume depends on the diameter of the beads. Small media particles are important to obtain better grinds. Grinding Media with high density is suitable for formulations of high pigment concentration. However, all kinds of Grinding Media such as glass, steatite, zirconium oxide and steel can be used.
The SUBMILL has all the advantages of our world renowned mixer-dispernsers with elevating rams and infinitely variable speed controls