Milling of Fibrous Products

Secomy S Fine-cutting Mill

17.06.2015 The Secomy range of Netzsch cutting mills comprises rapidly running mills with a high rate of cuts suitable for the ultrafine grinding of cuttable materials.

Secomy S Fine-cutting Mill

The mill performs ultrafine size reduction of cuttable materials (Picture: Netzsch)

Application areas for machines of this type are materials which have to be finely ground by cutting, i.e. temperature-sensitive materials, fibrous products, as well as materials for which good free-flowing properties, high bulk densities and gentle grinding are required. The existing problems, which arose in the past when standard fine-grinding mills were used for the classifying of products to below 150 µm, have been solved with the Secomy S version. The screen insert has now been completely replaced by a rotating classifier wheel. After cutting, the ground product is transported to the classifier wheel by air currents and then classified in this area. Coarse product falls back into the grinding chamber. The fine product leaves the machine via the pipe outlet. The classifier wheel geometry was further optimized for the application known as „Separation of Fibrous Products“. This technology makes the mill unique on the market. The feed product is conveyed into the cutting chamber by gravity or by a nip-roll device. The material is cut between the rotor- and stator knives in a special cutting sequence with a defined gap. Cutting continues until the material is fine enough to pass through the classifier wheel. The cutting rotor is supported in precision bearings with special gasket seals to the cutting chamber.

Facts For Decision-Makers:

  • high rate of cuts
  • classification below 150 µm
  • optimized wheel geometry

Achema 2015 Hall 6.0 – B6