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Conical disc refiner

The Conical Disc Refiner is a refiner of single-disc cantilever design with hydraulic positioning of the rotor disc and the front cover supporting the non-rotating stator disc.

Conical disc refiner

A flat inner refining zone and a conical shaped outer zone make the CD concept unique. The hydraulic system, operated by a guide valve, controls the disc clearance on the conical zone and an electric motor with a worm gear operates eight transroll screws to control the disc clearance on the flat zone. The disc clearance is measured by a TDC (True Disc Clearance).

The segments are mounted on segment holders for both the rotor and stator. The disc clearance is kept constant during various operating conditions and loads by means of a hydraulic control system.