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Agitator Bead Mill for Dry Fine Grinding

NETZSCH SpheRho® lab mill impresses with unique product advantages

Fine mills and ultra-fine classifiers made by NETZSCH are synonymous with highest finenesses and an optimum degree of efficiency. With corresponding laboratory machines, the proven technology can also be used to produce small quantities of product on a laboratory scale. Today, in many industries well-appointed laboratories are a must for the development of new products, for process optimization as well as for the production of small samples.

The NETZSCH SpheRho® 1 is the laboratory version of the SpheRho® Dry Agitator Bead Mill. Compared to conventional ball mills, with this mill type it is possible to obtain extremely fine products combined with very high throughput capacities at low specific energy consumption levels thanks to its operating mode and stress characteristics.

With the laboratory version of the dry agitator bead mill, initial trials for the development of new products can be carried out from a minimum volume of 0.5 l. A subsequent scale-up of the results to production sizes is possible. The SpheRho® 1 is also ideal for processing the smallest quantities as well as for quality control, quality assurance and process optimization. Here, the user can rely on the reproducibility of the results obtained. Further plus points of the NETZSCH SpheRho® 1 are its simple operation and high flexibility. Additionally a low cleaning expenditure at the highest possible product recovery can be guaranteed.

The main field of application of this lab mill is real comminution of various raw materials with typical product finenesses d50 in the range of 2 µm to 70 µm. The continuously operating dry agitator bead mill can be used in single pass without classifier as well as in grinding/classifying circuit.


  • Rodenbacher Ch 1, 63457 Hanau, Germany
  • NETZSCH Trockenmahltechnik GmbH