Definition

WS85 and Trellex LS are polyurethane screen panel installation structures used in mineral processing screening. WS85-style panels are customizable across dimensions, aperture configurations, reinforcement designs, and fixing arrangements. Trellex LS is a modular screening-media system associated with Metso equipment, designed around specific module and fixing arrangements that allow individual modules to be replaced without renewing the entire screening surface.

Working Principle

Polyurethane screen panels separate material by size while resisting abrasion, impact, and vibration. The panel is retained on the deck by a fixing structure — pins, ears, rails, or locking geometry — that must match the screen frame exactly.

If the fixing structure does not match, the panel will not seat correctly, which changes the effective deck slope, drainage path, and screening dynamics. This is why installation compatibility must be confirmed before any comparison of wear life or screening efficiency.

Benefits

Wear resistance. Polyurethane withstands continuous abrasion from abrasive ore and slurry.

Flexibility. The elastomer flexes during vibration, reducing blinding and pegging.

Impact resistance. Panels absorb impact loading better than rigid media.

Modular replacement. Individual panels or modules can be replaced without renewing the full deck.

Customization (WS85). Dimensions, apertures, thickness, and fixing details can be matched to non-standard equipment.

Standardization (Trellex LS). Compatible modules simplify spare-parts management across multiple screens.

Applications

WS85 polyurethane screen panels are applied in dewatering screens, tailings processing, fine wet screening, concentrate screening, coal and slime processing, aggregate screening, and high-abrasion mineral processing. They are particularly suited to plants with non-standard deck requirements.

Trellex LS-type panels are relevant where existing equipment already uses the Trellex LS modular installation structure, and where standardised modules simplify maintenance across multiple screens.

Screening sits between CRUSHING and GRINDING in the comminution circuit. Correct panel selection protects both downstream stages.

Material Comparison

For a wider comparison of screening media types, see POLYURETHANE SCREEN VS RUBBER SCREEN VS WIRE MESH.

Application Comparison

Industry Application Matrix

Selection Guide

Four inputs determine the correct structure:

1. Existing deck structure — WS85-type or Trellex LS modular. This is the first and most important check.

2. Fixing and retention method — pin or ear configuration, retaining system, support rail design, locking geometry.

3. Aperture and open area requirements — aperture accuracy matters most in fine screening and dewatering.

4. Operating conditions — feed material, size, capacity, moisture, clay content, abrasiveness, target separation size, screen model, inclination, and vibration parameters.

A replacement panel should be mechanically compatible before wear and screening performance are evaluated.

Procurement Guide

Required information: screen model, panel drawing, dimensions, aperture size, fixing method, installation structure, feed material, capacity, moisture, clay content, abrasiveness, and target separation size.

Drawings needed: panel outline with fixing detail, deck layout, and OEM part number where available.

Material selection: request polyurethane formulation, Shore hardness, panel thickness, reinforcement structure, and wear test data.

MOQ: typically per panel or per deck set.

Lead time: commonly 2–4 weeks for standard panels; longer for custom moulds.

Packaging: palletised and separated to prevent deformation.

Shipping method: sea freight for volume; air freight for breakdown-critical replacement.

Inspection standards: dimensional check against drawing, hardness verification, aperture measurement, fixing geometry check, visual mould inspection.

Supplier Evaluation Checklist:

• Can the supplier manufacture according to drawings?

• Can the supplier provide material reports?

• Can the supplier support OEM replacement?

• Pub Time : 2026-09-22 09:21:36 >> News list