Opposed jet mill TFG
vertical

opposed jet mill
opposed jet mill
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Characteristics

Technology
opposed jet
Orientation
vertical

Description

The TFG product line is a process-technological variant of the AFG product line adapted to suit the special requirements of the toner, powder coating and pigment industry. The TFG offers optimum accessibility for cleaning and thus fast product changes. Because the bottom of the grinding chamber is flat, only minimum residues of unground product remain in the machine at production end. The classifying wheel is driven via a vertically arranged shaft. In the case of jet milling, one takes advantage of the fact that as compressed gas exits a nozzle, it is accelerated to extremely high speeds. In expanding, the energy contained in the compressed gas in the form of heat is converted to kinetic energy. The speed of sound is initially a natural limit for the exit velocity. But by using Laval nozzles, the exit velocity can be increased to above the speed of sound. Laval nozzles are characterised by their hourglass shape, which widens downstream of the narrowest cross-sectional point, the nozzle throat. The length of the divergent part of the nozzle is adapted to suit the operating pressure. Compressed air of 20°C and 6 bar overpressure is frequently used as the grinding gas, and delivers nozzle exit speeds of around 500 m/s. As a result of drawing in gas and product from the fluidised bed, the speed of the gas jets sinks extremely rapidly after exiting the nozzles. Comminution is a result of interparticle collision in the jets of air and also in the core area, i.e. the point where the opposing jets intersect.

Exhibitions

Meet this supplier at the following exhibition(s):

ACHEMA 2024
ACHEMA 2024

10-14 Jun 2024 Frankfurt am Main (Germany) Hall 4.1 - Stand F37

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    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.