Your specialist for screening machines and conveyors

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Find the right screening machine easily!

Our machine finder will show you exactly the screening machines and conveyor technology that match your individual requirements.

Powders with the highest purity.

Powders with the highest purity.

Finest grains perfectly separated due to directly excitated screening with high frequency drive.

Constantly pure grains.

Constantly pure grains.

Highest capacities with outstanding purity due to maximum machine size and quality.

Sugar perfectly sifted.

Sugar perfectly sifted.

Finest separations in many fractions due to high frequency vibration and multiple screen decks.

Mortar with the finest quality.

Mortar with the finest quality.

Many fractions even for the most demanding separations due to directly excitated screening with high frequency drive.

Fertilizers without lumps and dust.

Fertilizers without lumps and dust.

No clogging of the screen mesh due to direct excited screening with extreme acceleration.

Applications

  • Phosphate fertilizers
  • Nitrogen fertilizers
  • Sugar
  • Salts & Potash
  • Metal Powder
  • Dry Mortar & Ready-Mix Plaster
See all applications
Perfect separations for phosphates

Phosphate fertilizers

Perfect separations for phosphates

Super phosphate (SP), triple super phosphate (TSP) or double super phosphate (DSP) as well as diammonium phosphate (DAP) and monoammonium phosphate (MAP) are mainly used as fertilizers and are subject to strict quality requirements. Since phosphate fertilisers are produced in large quantities of several hundred tonnes per hour, even small efficiency deficits lead to high product losses. The aim of the screening process is to achieve high product purities at maximum throughput - and this can only be achieved by preventing clogging of the screen meshes.

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Best screening results for nitrogen fertilizers

Nitrogen fertilizers

Best screening results for nitrogen fertilizers

The screening tasks in the processing of nitrogenous fertilizers such as ammonium sulphate (AS), ammonium nitrate (AN), calcium nitrate (CN), potassium nitrate (KN), calcium ammonium nitrate (KAS) and urea range from lump separation to the demanding separation of product fractions and also to dust removal. Screening nitrogen fertilizer with high efficiency and throughput requires precise adjustment of all machine parts as well as a well-functioning self-cleaning system, since urea and co. tend to bind air humidity in the dust fraction and thus clog the screen cloth.

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Perfect vibrations for sugar sifting

Sugar

Perfect vibrations for sugar sifting

To separate sugar properly, a high frequency is required directly applied to the material. The reason is that sugar can get sticky even at low humidity levels and also tends to clog the sieve mesh due to its crystalline grain shape. Screening machines with direct excitation of the screen mesh have therefore proven to be not only energy efficient but also extremely precise. Thanks to the high accelerations, they reliably separate even finest sugars into several fractions simultaneously.

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Maximum capacity for salts and potash

Salts & Potash

Maximum capacity for salts and potash

In salt and potash production, screening machines are used at various points of the processing chain. Starting with pre-screening partly in underground operation, through compacting and loading in the coarser grain range as well as crystallization and flotation with more critical separations in the fine range, to wet screening and dewatering with separations of less than 1.0 mm. While screening machines have to achieve high throughputs, the quality of the end product must also be taken into account.

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Efficient separation of metal powders

Metal Powder

Efficient separation of metal powders

High-alloyed metal powders for 3D printing (additive manufacturing/ rapid technology) should be extremely pure to guarantee a high-quality end product. Dust and agglomerates must therefore be reliably removed from the extremely fine powder during production and recycling. A suitable screening machine should not only be highly precise, but also reduce the loss of valuable product and machine downtime to a minimum.

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Screening mortar precisely into several fractions

Dry Mortar & Ready-Mix Plaster

Screening mortar precisely into several fractions

When producing dry mortar into different fractions, the fluctuating grain size distribution of the crushed limestone as well as its tendency to clog up the screen mesh lead to great challenges during screening. Efficient and flexible screening equipment can prevent these negative effects. On the one hand, it must be possible to individually adjust the oscillation amplitudes on each screen deck and, on the other hand, an automatic cleaning system is required to keep the screen surface open and thereby ensure throughput and product quality.

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Our products

Vibrating screening machines with direct excitation of the screen cloth

In contrast to conventional screeners, the vibration in these screening machines is generated by a high-frequency rocker shaft movement directly on the screen cloth.

This allows the precise and energy-efficient separation of even the finest and most difficult to screen materials.

Vibrating screening machines with direct excitation of the screen cloth

Our products

Screening machines with double-frequency drive

In this particular type of drive, two unbalance motors with different speeds are used. Upstream, a large oscillation amplitude ensures the loosening and removal of the material, while downstream, a small oscillation amplitude at higher acceleration ensures that even difficult to screen products are classified accurately.

Screening machines with double-frequency drive

Our products

Screening machines with linear or circular vibration

Linear and circular vibrating screens are a cost-effective alternative to directly excited screening machines. They can be supplied with several screen decks on request and are available in tailor-made special designs. Their low-maintenance unbalance motors and good accessibility through large inspection openings simplify maintenance tasks.

Screening machines with linear or circular vibration

Our products

Screening machines for wet classification and dewatering

By overcoming cohesion forces, our high-performance dewatering screens achieve maximum dewatering of solid particles from suspensions with optimized residual moisture content for particles down to less than 1 mm. In wet processing, the precise screening technology ensures efficient disagglomeration of the material and thus optimum separation of coarse and fine material.

Screening machines for wet classification and dewatering

Our products

Conveyor technology: Conveying systems, feeders and distributors

We offer product-friendly, customized conveyor technology for the transport and dosing of bulk materials, dividing them into uniform product streams or feeding downstream machines.

Depending on the selected design, it is even possible to design conveying and distribution devices with integrated pre-screening.

Conveyor technology: Conveying systems, feeders and distributors

Screening machine manufacturer with passionate commitment

Believe it or not – for over 70 years it has been our objective to manufacture the best screening machines in the world! For our customers we always aim to deliver the most effective screening machines for their specific task. Of course, we consider our customers’ technical and commercial constraints and adjust each screening machine exactly to their wishes and requirements.

RHEWUM screening machines are “Made in Germany” or more precisely “Made in Remscheid” – for this reason it is no surprise that we are not the cheapest manufacturer of screening machines, but our sophisticated clientele appreciates our established quality. Still not convinced? We will test your material in our technical center and demonstrate to you the performance of our screening machines, live on site! Clear, committed answers instead of cryptic promises are what you can expect from RHEWUM.

Sigurd Schuetz
Managing Director

Screening machine manufacturer with passionate commitment

News

SOLIDS fair postponed to 2021

29.04.2020, Dortmund, Germany

SOLIDS fair postponed to 2021

The organizers of SOLIDS & RECYCLING-TECHNIK regret to have to cancel all exhibitors and visitors...

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Screen Applications in the Glass Industry

21.04.2020, Remscheid, Germany

Screen Applications in the Glass Industry

Glass can be found in almost all areas of daily life. Starting in the construction industry,...

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