Abstract
In the beads mill the diameter of the beads is important for the grinding/dispersion performance and the specific energy consumption, and in this paper the finding is reported that the ratio of the vessel length to the vessel diameter （L/D） and the material have great influence on the specific energy consumption as a result of optimizing the shape and material of the grinding vessel. Further, in addition to the optimization, a multi-pass type beads mill is also introduced which has the possibility to allow a continuous one-pass process to perform the equivalent of the process which is conventionally performed in several passes.
