Grinding Plates

Genda Special Grinding Plate/disc

High Consistency Refiner for paper application

High Consistency Refiner for CTMP, Mechanical & Semi-chemical pulp

The refining process is recognized as the "heart" of the papermaking process. Fiber binding properties, paper strength, and other properties which depend on the quality of the pulp produced by the refining process. One of the important elements that determines the refining
effect is to choose the right plates. For the same refining strength and refining energy, different tooth shapes will result different fiber treatment effects.

No-Hollow Grinding Plates invented by Genda are specially developed for medium or high consistency pulp. Genda specially developed a series of tooth shapes for medium and high consistency refining to adapt to different pulps.

The No-Hollow Grinding Theory refers to the research conclusions of an empty grinding phenomenon due to the different thicknesses of the surface layer of conventional grinding plates.

When pulp enters the tooth gap from a small radius in the grinding disc and moves to a large radius, pulp layer keeps getting thinner from the inside to the outside. The phenomenon of empty grinding occurred. The larger the radius of the grinding disc, the more serious the empty grinding of the tooth surface, which reduces the efficiency of the grinding.

Our patented grinding disc is based on the research on the phenomenon of empty grinding, using the principle of fluid dynamics,we have designed a tooth structure of the grinding disc to prevent the phenomenon of empty grinding, In this way, the thickness of the pulp layer on the entire disk surface is consistent during refining, which greatly improves the refining efficiency.

Equipment is introduced
Scope of application
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The non-hollow grinding plate improves the structure of normal plate and make the same thickness of pulp between plates. It can increase the efficiency of grinding up to 20-40%. As no overcutting of the fibers, it can reduce the loss of fiber, increase the yield of pulp and enhance the tension of paper. With this innovative and patented plate, pulp can get 8-12times cutting in one machine, and its freeness being increased by one machine is much higher. Moreover, the flow of pulp and its uniformity are improved a lot. We design the obtuse-angle grinding and “pumping-out” devil tooth especially for the high consistency grinding plate. At last, our patented plate has good performance in its service life and environment protection.

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