The rotary kilns are of a classic design fitted with the drive via the gear rim, with the shell seated on floating supporting rings. There is a sliding seating of radial rollers, the hydraulic axial roller allows the axial displacement of the rotary kiln. The rotary kilns made by PSP Engineering a.s. are noted for their high reliability and simple maintenance. The size of the rotary kiln depends on the type and capacity of the kiln line.