Pulsation mill

 Application and essential feature

It is used for the processing of such raw materials as: Pouch kraft paper, insulating paper, beer crates, paper with special coatings and valuable paper.

The principle of operation of pulsation mills is based on the fact that mass with a concentration of 2,5 - 5,0%, passing through the mill, is subjected to intense pulsation of hydrodynamic pressures (up to several megapascals) and velocity gradients (up to 31 m/s), as a result of which a good division into individual fibers of lumps, bundles and petals without shortening them. This is due to the fact that during the rotation of the rotor, its grooves are periodically overlapped by the protrusions of the stator, at the same time, the live cross-section for the passage of mass is sharply reduced, and it experiences strong hydrodynamic shocks, the frequency of which depends on the frequency of rotation of the rotor and the number of grooves on each row of the rotor and stator headset, and can reach up to 2000 oscillations per second. Thanks to this, the degree of dissolution of waste paper and other materials into individual fibers reaches up to 98% in one pass through the mill.

The working headset of the stator and rotor equipment differs from the headset of conical and disc mills, it has a truncated cone shape. 

Advantages 

• It ensures the processing of high-strength fibers without compromising the efficiency of defibrillation or the efficiency of energy use;
• They provide an increased degree of dissolution of waste paper and other materials into individual fibers;
• The design of the rotor and the method of operation of the rotor-stator pair, which can easily compensate for wear on the rotor-stator interface, while maintaining the above-mentioned operational advantages, even when processing abrasive materials;
• The use of the equipment makes it possible to increase the productivity of hydraulic breakers and reduce their energy consumption.

 

Main technical parameters Mills with drive - 980 rpm.

 

Model	PRODUCTIVITY, tons/day	Power (Kw)
500	15-25	100-150
600	20-35	150-200
900	40-50	250-315