Vibrating Screen RHEsono^®

The RHEWUM RHEsono® is the purpose-built solution for precise separation cuts from 100 µm to 2 mm (approx. 0.004'' to approx. 0.79'' / approx. 140 mesh to approx. 10 mesh).
Conventional oscillating screens vibrate the entire machine frame - generating insufficient acceleration at the mesh for fine cuts and causing frequent blinding below 2 mm. The RHEsono® solves this with electromagnetic direct excitation: robust electromagnets mounted outside the housing transmit vibrations via oscillating axes directly into the wire mesh, achieving accelerations of ≥ 15 g at the screen cloth - several times higher than conventional frame-vibrating screens. A high-frequency beater bar throws material off the mesh at a 90° angle, while the mesh inclination transports material across the screen. The static housing absorbs zero dynamic loads on surrounding structures.
With screen widths from 750 mm to 2,200 mm (approx. 29.5'' to approx. 86.6''), up to 5 screening decks, and power consumption of only 0.52 kW to 3.9 kW, the RHEsono® delivers sharp fine separation at high throughput with minimal energy cost - making it the most precise and efficient solution for fine particle classification in industrial bulk material processing.

Mesh blinding in fine screening is almost always caused by insufficient acceleration at the screen cloth - not by the material itself. The RHEsono® eliminates this with an automatic, adjustable cleaning system that delivers targeted cleaning pulses directly to the screen cloth at accelerations of up to 50 g. Because the electromagnets operate outside the housing, cleaning intensity is tunable in real time without stopping production. This keeps the mesh reliably free even with the most demanding materials:

Nitrogen fertilizers (sticky, hygroscopic) - product purity of at least 85% in all major fractions at high feed rates
Fine and moist sand - trouble-free screening without blinding
Gypsum (fine, adhesive powders)
Pharmaceuticals and food powders (sensitive, fine particles requiring FDA-compliant equipment)
Polymers and lignin pellets (electrostatically charged)

The result: consistent separation quality, maximum plant uptime, and significantly lower maintenance costs compared to conventional vibrating screens.

A conventional oscillating screen sets the entire machine frame in motion - every kilogram of steel, every bearing, every structural component vibrates continuously. The RHEsono® vibrates only the screen mesh. This fundamental difference translates directly into energy consumption: the RHEsono® operates at 0.52 kW to 3.9 kW total electrical power, regardless of machine size up to 2,200 mm width and 6,000 mm length (approx. 86.6'' x 236.2''). Beyond energy savings, the static housing design delivers additional operational advantages over conventional oscillating screens:

Vibration target: conventional screens vibrate the entire frame - the RHEsono® vibrates the screen mesh only
Dynamic loads on structure: conventional screens generate high structural loads - the RHEsono® housing remains static, with zero dynamic loads on surrounding structures
Bearing and drive wear: significantly reduced compared to conventional frame-vibrating screens
Drive redundancy: a single drive failure on a conventional screen stops production - on the RHEsono®, production continues if one drive fails
Mesh change: conventional screens require machine entry - the RHEsono® allows quick mesh changes from outside
Power consumption: conventional oscillating screens of comparable size typically consume 15 kW to 18 kW - the RHEsono® operates at 0.52 kW to 3.9 kW, a reduction of up to factor 10

For any fine separation requirement below 2 mm (below approx. 0.79'' / approx. 10 mesh), the RHEsono® delivers lower operating costs, higher availability, and zero structural impact compared to conventional screen technology.

Fine particle classification below 2 mm (below approx. 0.79'' / approx. 10 mesh) is a critical process step across a wide range of industries - and the wrong screening technology causes product contamination, yield losses, and compliance failures. The RHEsono® is proven in the following applications:

Sand and minerals - fine classification below 2 mm for quartz sand, frac sand, basalt sand, and manufactured sand (M-Sand) in construction, glass, ceramics, and oil and gas
Fertilizers - precise classification of nitrogen fertilizers and sticky granules with product purity of at least 85% in all major fractions
Chemicals and gypsum - reliable sifting of fine, adhesive powders with high-frequency mesh excitation
Food and seed - gentle, contamination-free screening of sensitive food powders and grains
Pharmaceuticals - FDA-compliant fine separation of active ingredients and excipients down to 100 µm (approx. 0.004'' to approx. 0.394'' / approx. 140 mesh to approx. 2 mesh)
Recycling - separation of fines below 0.4 mm (below approx. 0.016'' / below approx. 40 mesh) in laminate and composite material recycling
Polymers and plastics - screening of lignin pellets and electrostatically charged particles

For applications requiring separation across a wider range from 100 µm to 10 mm (approx. 0.004'' to approx. 0.394''' / approx. 140 mesh to approx. 2 mesh), the RHEsonox® combines RHEsono® electromagnetic drives with the linear RHEflex® principle in a single machine - ideal for sand classification and fertilizer screening with multiple simultaneous fractions.

A single RHEsono® can classify bulk material into multiple simultaneous fractions without additional machines. With up to 5 screening decks in a single unit, the RHEsono® separates feed material into up to 6 fractions in one pass - from coarse oversize down to fines below 100 µm (approx. 0.004"). Each deck operates with independently tunable vibration amplitude, adjusted infinitely during live operation to adapt to product variations without stopping the process.
For even wider separation ranges - for example, a combined cut at 10 mm (approx. 0.394'' / approx. 2 mesh) and 0.4 mm (approx. 0.016'' / approx. 40 mesh) in a single machine - the RHEsonox® integrates both the RHEsono® electromagnetic principle and the linear RHEflex® drive in one unit, covering the full range from approx. 100 µm to 10 mm (approx. 0.004'' to approx. 0.394'' / approx. 140 mesh to approx. 2 mesh). This eliminates the need for separate machines in series, reduces footprint, and simplifies process integration. Minimum throughput starts at 5 t/h (11,023 lbs/h), with machine dimensions scaling up to 2,200 mm x 6,000 mm (approx. 7.2 ft x 19.7 ft / approx. 86.6'' x 236.2'') for high-capacity applications.