1. Equipment description:
Dense medium cyclones are divided into two categories: pressure-feeding and non-pressure-feeding, but their sorting principles are basically the same. The heavy medium suspension and minerals are subjected to centrifugal force in the cyclone, so that the suspension is stratified by density, and the minerals in the suspension are separated according to different densities. The high-density heavy products are concentrated on the outer wall and are discharged through the heavy product discharge port along the outer spiral movement; the low-density light products are discharged through the overflow port along the inner spiral in the negative pressure area at the center of the cyclone, thus achieving high efficiency and precision. sorting.
2. Description of equipment lining (microcrystalline wear-resistant ceramics):
◆Ultra high wear resistance and long service life: high cylindricity and small friction coefficient; slight wear during use and slow change of inner diameter. Ensure that the sorting efficiency is high and stable.
◆The wear-resistant ceramic lining is easy to replace: the worn and scrapped lining can be replaced on site, and the cyclone shell can be reused, reducing production costs.
3. Working principle:
► The selected raw coal is fed from the top center pipe of the first-stage cylindrical cyclone.
► Qualified resuspension is fed tangentially from the lower part of the cyclone after being pressurized by the medium pump.
► Under the action of centrifugal force field and density field, the selected material will
- The light products are discharged from the central pipe at the lower end of the cyclone through the inner cyclone along with a part of the resuspension with lower density, and become clean coal;
- The heavy product and part of the resuspension with higher density pass upward along the inner wall of the cyclone through the outer cyclone, and enter the second section of the cylindrical-conical cyclone;
- The materials entering the second section of the cylinder are sorted, and the medium coal and gangue are discharged.
