Typical application examples of our screening machines for fertilisers are the following types of fertilisers and fertiliser granules:

  • Mineral fertiliser
  • Nitrogen fertiliser
  • Calcium ammonium nitrate
  • NP fertiliser
  • NK and NPK fertiliser
  • Ammonium nitrate
  • Ammonium sulphate
  • Fertilisers with urea
  • Phosphate fertiliser
  • Monoammon phosphate (MAP)
  • Diammon phosphate (DAP)
  • Triple superphosphate
  • Potash fertiliser
  • Potash sulphate
  • Crude potash salt
  • Potassium chloride
  • Lime fertiliser
  • Lime
  • Magnesium lime

We will be glad to advise you on which screening technology is best suited for your fertiliser types. You can also use our SPALECK TestCenter, where we can screen and classify your fertilisers together.

Close up photo of fertilisers after a controll screening

What is screening technology used for in fertiliser production?

Quality & environmental protection

Screening machines in fertiliser production make an important contribution to quality assurance. They also help to ensure that the legal requirements for fertilisers are met. They are therefore mainly used for

Construction and design of fertiliser screening machines

Modular design for your application

Different types of screening machines and machine configurations can be used for screening fertilisers. These include

  • Single deck flip flow screening machines
  • Double deck flip flow screening machines
  • Screening machines with wire cloth
  • Dedusting screening machines
  • Screening machines with special mesh or screening mats against abrasion
  • Screening technology with cover
  • Directly excited or linear vibrating screens
Photo of a lower deck of a screening machine for fertilisers. Here you see flip flow screening technology.


  • Optimum screening results even with sticky and moist fertilisers
  • Reliable control and protective screening
  • Exact classification of fertilisers according to granule size
  • Clean screening cuts for highest end-product quality
  • Efficient and economical production processes
  • Good scalability for large volume flows
  • Adaptable to changing fertilisers

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Optimised and adaptable to different granulate sizes

Classification of fertiliser

As a manufacturer of screening machines, we build the machines customised for your application purposes. In doing so, it is usually possible to enable product changes of granulate sizes planned in advance by adapting the screening machine.

An example of this is a flip flow screening machine. Its screening mats can be quickly adapted when the batch is changed.

For example, fertiliser granules with a grain size of 0-3 mm and 3-8 mm can be screened in one batch. For another type of fertiliser, for example, 0-2 mm, 2-6 mm and 6-9 mm. In this case, simply change the screening mats accordingly. You can find a video on how this works at www.spaleck.eu/videos.

Designed for high tonnages

Scalable production quantities

Our fertiliser screening machines are often designed for high tonnage. The material is usually very demanding. It can be sticky, moist and also abrasive. A typical processing quantity is 100t/h or even 150t/h. Of course, we also realise smaller or larger machines with our plant engineering.

A farmer spreads fertiliser on the field with a tractor.


It is impossible to imagine modern agriculture without fertilisers. At the same time, environmental protection must be taken into account. For example, overfertilisation may not occur.

That is why modern technology is used in fertiliser production. Only thanks to their help is it possible to produce high-quality fertiliser economically.

We at SPALECK are partners of many leading fertiliser producers and develop reliable and selective screening technology together with them.

We invite you to come and see for yourself at our SPALECK TestCenter. We will be happy to test your fertilisers with you and find the optimum screening technology.

Photo of the SPALECK TestCenter where you can run screening and conveying tests with your fertilisers.
Frank Spaleck | Sales Manager
Frederic Müggenborg | Technical Sales
Frederik Stening | Manager Application Technology
Tom Willing | Team Lead Spare Parts
Andreas Ahler | Managing Director

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