| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: invention relates to ore processing, dressing or minerals and grading crushed ore to sizes at mining enterprises. Proposed method comprises feeding iron ore into drum screen with rotary sieving surface. Ore rolling from inclined surface is caught on screen leading edge by magnetic drum revolving toward screen and adds ore as far as possible onto leading side of sieving screen. Proposed method is implemented using drum screen that comprises drum with sieving surface, drive, feeder, separation products receiver. Besides, drum screen inside accommodates magnetic drum made up of revolving nonmagnetic ring shell and magnetic system. Rotational axis of magnetic drum is arranged parallel with that of cylindrical screen or at minor angle. Direction of drum rotation is opposed to that of screen. ^ EFFECT: higher efficiency of screening. ^ 9 cl, 4 dwg |
