NEUMAN & ESSER
Process Technology GmbH

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 NEA ICX enables energy-efficient grinding in areas of fineness hitherto reserved for jet mills and ball mills. This now enables the realization of finest grinding in a compact, energy-saving grinding system, which does not require any additional aggregates such as air compressors.


 

Complete Back-end Processing Solutions for rCB
In order to offer rCB producers a complete solution that takes all important factors into account, NEUMAN & ESSER has developed a turnkey solution for grinding, pelleting, drying and packaging. This comprehensive approach offers rCB producers the chance to take into account all process steps from the discharge of pyrolysis char down to high quality, fine ground, pelletized and packed rCB.
Grinding and Spheronization of Graphite
Contrary to the traditional micronisation and spheronization process for natural graphite, where each particle has to pass many individual mills in a cascading mill line, in the NEA|Sphere process each particle only passes one grinding unit and one spheronization unit. Breaking down the process into the basic two process steps and using dedicated units to perform these process steps, offers the advantages Efficency, Simplicity and Reliability.

 

The impact classifier mill ICM is used for fine and finest grinding of brittle materials. During impact grinding, the grinding tools throw the feed material into the liner and crush it. Following this, the integrated classifier separates the material. The grinding fineness can be set there flexibly using the classifier’s rotary speed. The classifier rejects particles which are too coarse. The coarse material is returned to the grinding zone for further particle size reduction.
The advantages of the ICM are its narrow particle size distribution and precise upper particle size restrictions of 10 μm to 2,000 μm. This allows for precise setting of the desired product properties with regard to flow capacity, color intensity, shine, applicability and taste.

 

The GRC guide ring classifier from NEUMAN & ESSER is a latest generation high-efficiency air separator, which offers top yields, precise separation limits and minimum energy requirements. It can be operated as an independent aggregate and combined with a mill.

The feed material is fed from the top using a vertical pipe. After the feed material drops into the dispersion unit, it enters the classification zone. 

The air required for classification carries the particles to the classifier wheel. Small particles, the fine materials, are being pulled through the classifier wheel by the classifying air. The fine material is then separated from the air in the following filter.

The classifier wheel rejects particles which are too large and they reach the bottom of the classifier as coarse material. An airlock discharges this material there.

The pendulum mill PM is a roller or horizontal mill. It is the further development of the proven Raymond and is suitable for fine grinding and drying soft to medium-hard ground material. Application examples include clay, bentonite, barite, phosphate, coal, quicklime, limestone and talc. Further areas of application include grinding pigments and chemical products.