1. The same cylinder can be equipped with three kinds of tanks, namely, down-flow tank (CTS), counter-flow tank (CTN) and semi-counter-flow tank (CTB), to adapt to different selection requirements.

2. The flow trough is suitable for roughing and selection of ore size of 6-0mm.

3. Counterflow tank is suitable for roughing and selection of ore particle size of 0.6-0mm.

4. The semi-counterflow tank is suitable for roughing and selection of ore particle size of 0.5-0mm, especially for the selection of minerals with particle size of 0.15-0mm.