The TORNADO PULPER handles the materials considered impossible to defiber.
The Tornado Pulper is also the most efficient pulper for the recovery of waste from products considered impossible to defiber such as high wet strength, electrical insulation papers, gasket stock, map paper, shoe-board, and flooring base, eliminating ecological problems and disposal cost.
It’s the pulper for mills requiring an economical, low-maintenance, compact pulper for pre-treating impossible raw stocks such as cotton, hemp, flax, leather, and synthetic fibers eliminating the need for beaters.
The heart of the tornado is its unique rotor/stator design which has nine vanes and lobes that are perfectly balanced for optimum pulping. The only moving part is the rotor. This patented design allows the Tornado pulper to perform four distinct functions simultaneously:
1. Maximum agitation with minimum cycle time
The mill-proven rotor/stator design provides positive agitation with no dead spots. The conical interface of the rotor and stator creates a pressure increase across the rotor providing tremendous pumping action and positive flow through the defibering zone.
2. Quick size reduction ensured by stock recirculation
Oversize slabs and difficult to defiber scrap materials are rapidly broken up by the Tornado’s unique angle of attack between the rotor and stator. The scissors-like intersection of the leading edges of the rotor and stator lobes provides positive gripping and shredding of incoming material for initial size reduction. Oversize pieces escape via a valley between the stator lobes, avoiding possible plugging. These pieces are returned repeatedly to the interface and are quickly reduced to flakes suitable for extraction.
3. Extraction through defibering without fiber degradation
The tremendous pumping action and high rate stock flow through the defibering zone, plus stock recirculation for repeated treatment provides for complete fiber separation. Maximum defibering without fiber degradation is made possible by close clearances between the stator and rotor. To maintain optimum clearances throughout rotor and stator life, the tornado has external adjustments for setting the rotor gap.
4. Recirculation and rapid submergence delivers consistency
The stock passing through the defibering zone is recirculated through an exterior loop and delivered back to the pulper tank. This return flow provides positive submergence of broke and large slabs by forcing the furnish downward and into the rotor, enabling optimized reduction and maximum homogeneity.
About Kadant
Kadant is a global supplier of technologies and engineered systems that drive Sustainable Industrial Processing®. Kadant is based in Westford, Massachusetts, with approximately 3,500 employees in 20 countries worldwide. For more information, visit kadant.com.
