Finest Classification with the NEA DCX


The NEA DCX fine classifier is a highly efficient air separator which, in particular, has its strengths in the classification of finest products. The fine classifier can be excellently directly integrated into existing grinding, classification and separating processes. The product to be classified is fed to this classifier in the process air. As a consequence, the product no longer needs to be separated again prior to classification.

The feed material is fed to the classifier from below with the process air. The adjustable deflector ring in the classifier enables the feeding of the product to the classifier wheel from above. Here, the deflector ring enables simultaneous, even radial oncoming flow to the classifier wheel using the process air.

Seperation of finest particles - Deflector Classifier eXtra DCX

Installations and the housing shape achieve reduced flow speeds. They also guide finest particles within the classifier into the classifying zone in a targeted manner. A classifier wheel designed for the individual fineness requirements separates the finest particles from the coarse material here.

The air guidance, which is optimized with CFD simulations, achieves low pressure loss and therefore high energy efficiency. Homogeneous classification conditions and the exploitation of the entire classification zone enable maximum yields with low energy requirements. The NEA DCX classifier is excellently suited to maximizing the quantity produced and product quality for existing systems such as ball mills and micronizers which are equipped with older construction style classifiers.


  • Complete process air classification
  • Particle size topcut: 8 μm – 50 μm
  • Throughput: 500 kg/h – 50.000 kg/h
  • Classifier power: 15 kW – 300 kW
  • Air quantity: 3.000 m³/h – 60.000 m³/h
  • Diameter: up to 3.000 mm


  • Housing shape for extra fine particle guidance
  • Adjustable integrated deflector ring for ideal air and product guidance
  • Unsurpassed throughput and energy efficiency
  • Particularly high yield
  • Can be used with complete process air flow, no pre-separation required
  • Easy to combine with existing grinding systems, e.g. ball mills, pendulum mills, and impact mills
  • Optional wear protection


  • Fertilizers
  • Oilfield minerals
  • Pigments and paint
  • Clay and ceramics
  • Gypsum
  • Technical limestone cycle
  • Minerals
  • Fossil fuels

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