Smarter screening

Louise Davis

First practical application of an innovative screening solution

Since 2021, a smart screen for coarse elements from Kleemann has been processing a large number of different materials in Neumünster, Germany. Flexibility is required here. Whereas sand and fine-grained material are found in the gravel quarry, the screening of rubble and railway ballast is required in recycling applications. The plant is even used for the processing of topsoil, which is often highly cohesive.

The Mobiscreen MSS 802i Evo can deal with stone material ranging from very fine to very coarse and with all degrees of contamination and is therefore capable of meeting all challenges.

Gravel extraction case study

One example is its application in gravel extraction. “Here, we have to deal with a lot of sand and a relatively small proportion of stone. This means that the side discharge conveyor for fine grain has a real tough job. Other screening plants would soon reach their limits. This is no problem for our new machine,” explains André Krebs, proprietor of Ernst Krebs. It is also an advantage that the screen casing can be adjusted over 20% steeper than comparable plants. This guarantees a great cutting effect for the separation of fine material such as sand and a significantly higher output.

Flexibility from loading to screen change

The large feed hopper also contributes to flexibility. The hopper rear wall and the filling aids can be folded variably so that loading from different heights, from both sides and from the rear is possible. The screen media change is comparatively easy even in the lower deck because the screen casing can be placed completely in horizontal position. The screening parameters can be adjusted precisely and even conversion, for example from three to two final grain sizes, is uncomplicated.

Transport from one work site to another is also fast: the discharge conveyors can be folded in – without the disassembly of parts. Thanks to the stepless driving control, the plant can also be moved precisely into position.

Focus on employee safety

The display can be operated intuitively and guarantees safety. With the MSS 802i Evo, all relevant functions can be operated from a safe distance. The display can also be plugged in at different points on the machine. The user is therefore always near the function currently being executed. The difficult operation of levers arranged remotely from the component to be folded is a thing of the past. Operation during set-up and service is also simplified.

Users benefit from practical solutions

“It’s obvious that the R&D team looked exactly at what makes work more effective in practice. Everything is so much quicker, set-up times are shorter and output is higher. This pays off at the end of the day,” adds Krebs.

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