High-frequency screens for washing and dewatering of fine rock material

To perform this technological operation, as a rule, single-tier high-frequency vibrating screens with the ability to adjust the angle of inclination of the screening surface and a washing system are used, the purpose of which is to remove small rock material under the screening surface.

Due to the influence of high frequency and low amplitude vibration, water with particles of solid material is filtered through the slots in the screening surface, and solid material of a certain larger size class moves along the surface to the discharge zone. The special design of the screen box and surface allows to achieve excellent results with ultra-fine products, reaching moisture content in the range of 8-25%, depending on the nature of the material and its particle size distribution.

The material and the size of the slit in the screening surface are calculated individually for specific tasks.

Most often, this type of screen is used in conjunction with hydrocyclones in washing and sorting complexes used in coal and kaolin beneficiation and in the preparation of sand and gravel mixtures for concrete plants.