Jauhantamenetelmä vaakasuoran myllyn avulla ja vaakasuora mylly

摘要

To enhance pulverizing characteristics and to reduce a power consumption while suppressing damages/wears of pulverizing media in a horizontal mill for ultra-fine pulverization by using the pulverizing media (balls) and using a space between an inner sleeve and an outer sleeve which are rotated relative to each other as a pulverizing chamber. The media having a large diameter is used and the rotational speed is kept at a low level, which is opposite to a conventional common sense that the media having a small diameter is used and the rotational speed is kept at a high level. Since the rotational speed is low, a wear of the pulverizing media is small. The degradation in pulverizing performance due to the low rotational speed may be recovered by using the pulverizing media having the large diameter. Also, a dimensional ratio between the inner and outer sleeves, an interval between the inner and outer sleeves, and an axial interval between agitating vanes are suitably selected to enhance the performance.