ConJet® High-Density Bed Jet Mill

Efficient Air Jet Milling with controlled maximum particle size

General

The ConJet® High Density Bed Jet Mill combines a spiral jet mill with an integrated classifier wheel. This combination allows the ConJet® to produce materials with the highest fineness independent of the product load, and with higher throughput capacities. In the past, the fineness was controlled by adjusting the feed rate. Now, the integrated dynamic air classifier in the housing can be infinitely adjusted to guaranty exact and consistently reproducible product quality in this spiral jet mill.

Residue-free grinding and minimal build-up of material inside the machine make the ConJet® the ideal mill for a multitude of products, including high-quality products.

The compact design makes this machine very easy to maintain and clean completely when product is changed!

Technique

  • Finenesses from d97 2.5 µm to d97 70 µm (based on limestone)
  • Spiral jet mill for the fine grinding of soft to hard materials
  • Exactly defined maximum particle size through integrated dynamic air classifier
  • Variable setting of fineness independent of product load
  • Classifier wheel with exchangeable, simultaneously rotating immersion tube to achieve highest finenesses, unlimited adjustment
  • Gap between classifier wheel and fines outlet rinsed by gas for highest possible prevention of oversize particles
  • Classifier shaft seal rinsed by compressed gas to protect the bearings
  • Hinged housing door provides very good access for easy, fast cleaning and maintenance
  • Simple machine operation
  • Effortless product changes
  • High energy density as a result of rotating product bed, thereby up to 40% higher degree of efficiency, compared to a conventional jet mill
  • More efficient grinding (higher throughputs possible)
  • No residual material in the machine housing, therefore practically no product loss
  • Reproducible results
  • Optional designs available: pressure shock resistant, gas tight, wear protected
Grinding principle of the spiral jet mill with integrated classifier

Applications

Adhesives / Sealants

 

Ceramics / Glass

 

Pigments / Dyes

Ores / Minerals / Metals

 

Life Science

 

Agrochemistry

grinding of technical ceramics with ConJet

Literature

Brochure

Brochure

Typical toner products have a D50 in the range of 5 µm – 7 µm. NETZSCH Trockenmahltechnik GmbH entered the field of toner processing with the development of the CGS Jet Mill in the 1990’s followed by the CFS/HD-S High Dispersion Air Classifier a few years later.

Brochure

As the global leader in particle-reduction machinery, NETZSCH offers the technology and machinery to provide true drug development solutions.

Brochure

The ConJet® High Density Bed Jet Mill combines a spiral jet mill with a patented dynamic air classifier enables you to achieve high degrees of fineness, independent of the load on the gas flow.

Application literature

Application literature

A new jet mill combines a spiral design with a patented dynamic air classifier wheel to achieve optimum levels of fineness and throughput.

Application literature

The high-density bed jet mill represents an advanced development of the spiral jet mill. Its core feature is the integration of a dynamic air classifier at the centre of the grinding chamber. This enables optimal independent setting of the grinding fineness and efficiency. In addition, the circular motion of the material ground in the grinding chamber and the air classifier restricting product discharge from the grinding zone result in a very intensive loading of the gas jets with the material to be ground. This leads to a considerable improvement in the mill efficiency, especially for the grinding of lightweight materials. The operating characteristics of high-density bed jet mills and fluidized bed jet mills are compared and finally, on the basis of this comparison, favourable applications for the new high-density bed jet mill are derived.

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