众所周知,磁选机的单位处理量随着其分选区长度、磁力和分选矿粒速度的增加而增大。在下部给矿的干式辊型磁选机中,若离心力保持不变,增加辊的圆周速度就可提高这种磁选机的单位处理量。为满足这一条件可采用增大辊的直径和磁动势的方法。当离心力相同时,辊的圆周速度随着直径增大而提高。 It is well-known that the unit throughput of a magnetic separator increases with the length of its separation zone, the magnetic force and the speed of sorting mineral particles. In the dry-type magnetic separators fed to the lower part, if the centrifugal force remains the same, increasing the peripheral speed of the rollers increases the unit throughput of such a magnetic separator. To satisfy this condition, a method of increasing the diameter and the magnetomotive force of the roller may be employed. When the centrifugal force is the same, the circumferential speed of the roll increases with increasing diameter.