MINING, MINERALS & QUARRYING
Advantages of the JOEST Double-Shaft Screen
Linear and elliptical motion combined in one screen
JOEST has developed a double-shaft screen for challenging screening applications. The screen allows a changeover from a linear motion to an elliptical motion in order to optimize the screening process fort he actual consistency of the product.
In the actual project in question, around 270 t/h of wet gravel and sand with a grain size of 0–120 mm were screened. This material is highly abrasive, sharp-edged and thus prone to clogging. Due to the twin-deck design, it is possible to produce gravel sizes of 0–4 mm, 4–22 mm and >22 mm.
The special feature of this screen is that it can be operated both as a linear motion as well as an elliptical motion screen. This is made possible by a JOEST electronic control system in combination with the proven, overhead JOEST double-shaft drive.
In addition, the new system with electronic control can variably adjust the angle of attack and the formation of the ellipse. The screen can therefore be precisely adjusted to suit the customer’s screening requirements.
Conveyed material with a tendency to clogging is screened primarily with an elliptical vibrator. To ensure clear screen cuts, it makes sense to switch to a linear vibrator.
The speed and vibration angle can be changed without stopping the machine. This results in different transport speeds and accelerations on each screen deck, which enables optimisations during the ongoing screening process.
When selecting the screening system to be used, JOEST accommodates the customer’s requirements and wishes, thus ensuring that all common screen covering systems can be used. Customers can also choose between oil or grease-lubricated drive units.
#JOESTeam day #JOESTeam day a great success! On the occasion of the #JOESTeam day, the Managing Directors Dr. Hans Moormann and Dr. Marcus Wirtz invited all employees to fresh burger and fries and thus said thank you for their daily commitment, dedication and team spirit. #JOESTeam #teambuilding #JOESTgroup #JOEST #teamday
APPRENTICE-DAY AT JOEST First apprentice day a great success! On the occasion of the first apprentice day, the doors opened for many potential new apprentices. We had about 400 visitors that day, 184 of whom were potential new apprentices. The visitors could learn something about the company during on of the company tours. The…
The high requirements of waste to energy plants as well as systems with low energy demands are no novelty for JOEST.
With these resonance conveyors for Hitachi Zosen Inova, the material can optionally be fed to another unit via an intermediate opening with integrated JOEST Grizzly Screen. Another highlight is the low drive power of only 4 kW.
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