Wet grinding

NETZSCH represented in Romania by Kogaion is one of the market leaders in wet grinding technology. The bundling of process-related know-how and the extensive machine program from laboratory to production machines to complete production lines is our strength.

Agitator bead mills are grinding machines for ultra-fine processing of solids in liquids. Their area of application covers the particle size range from 200 μm (max. 500 μm) down to the submicron (nanometer) range. With a comminution factor down to 1: 10 000 (200 μm -> 20 nm), the application range is extensive and the variety of tasks extremely diverse. The wetting and homogenization of solids in liquids, deagglomeration and dispersion, all the way to true comminution of primary particles make the agitator bead mill a universal wet processing machine. Depending on the product properties, various types of agitator bead mills with different grinding systems are employed.

Mixing and dispersing

Mixing is one of the basic operations in mechanical processing engineering. In this way, at least two starting substances are combined into one substance that should be as homogeneous as possible.
The mixing process is commonly followed by de-aeration since, during the processing of liquid to highly-viscous products, pockets of air or gas often cause problems. Pockets of air, hence oxygen, can have negative effects on the product – such as oxidation, rancidity of fats or oils, discoloration or deterioration of aroma and taste for example – and, for materials that are to be coated, can lead to porous and pitted surfaces. In contrast, de-aerated products are usually more chemically stabile and more durable.

Equipment for wet grinding

Laboratory Machines