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WR8000 & WR9000 Modular screening media

Screening media for optimized accuracy

In order to produce the highest quality aggregates products, you need to use the very best in screening media.

The patent-pending WR modular screening media has been designed for use on screens with longitudinal profiles. Thoroughly tested, the WR media has been developed to give you high capacity and the best screening accuracy. Its installation is straightforward, does not require any screen modification and therefore minimizes downtime.

To optimize screening accuracy, the WR modular screening media utilizes a fiber-reinforced rubber screen membrane which enables thinner panels and closer aperture spacing. This results as well in a maximized open area. Furthermore, by elevating the screen panels from the longitudinal support bars, the screen panels can be fully perforated from side liner to side liner. The absence of blind fields in the directional flow of material makes sure of maximum material separation, and minimizes the amount of undersized particles "carry-over" in the end product.

Features and benefits

• Optimized screening accuracy
• Higher capacity
• Minimized downtime
• No screen modifications needed

Key Specifications
Thickness
Rubber:
Polyurethane:
3 / 5,5 / 8 / 10 / 15 and 20 mm
2,5 / 3,5 / 5,5 / 8 / 10 / 15 and 20 mm
Installation On modular screen decks with longitudinal profiles. Mounted crosswise in the screen on an adapter system. Maximum drop height on the top deck is 300 mm, in between decks max 800 mm.
Materials

WR8000 - 60 shore A fiber reinforced rubber
WR9000 - 90 shore A polyurethane

Apertures Punched holes available i all thicknesses, max hole size 40 mm.
FR - Square holes in line. Used in normal conditions.
FS - Square holes staggered. Used to prevent fines tracking when high fines content or on short screens.
SL, SLS - Slots with the material flow. Used when higher capacity is desired, accuracy (oversize control) is less important and to avoid pegging in small apertures.
ST, STS - Slots across the material flow. Used for wet screening and in dewatering screens.
Applications
Designed primarily for final and intermediate stage screening, in dry and wet applications, the Sandvik WR media is generally used with separations between 2-32 mm with a max feed lump size between 10-100 mm.
NOTE Do not use in applications where any amount of oil is present. The recommended hole size should be 1.25-2.5 times the screen panel thickness (punched holes).

WR8000 Screening media - recommended thickness in mm

Separation

Max particle size (mm)*

10 20 30 50 75 100
2  3 3
4-6  3 3  3
8  3, 5.5 3, 5.5  5.5
10-12,5 5.5, 8  5.5, 8
16 8, 10  8, 10  8, 10 10 
19-25,4  10, 15  15 15, 20 20 
31,5  15, 20 15, 20 20

*Bulk density max 1,8 metric ton/m3

WR9000 Screening media - recommended thickness in mm

Separation

Max particle size (mm)*

10 20 30 50 75 100
2  2.5 2.5
4-6  2.5, 3.5 3.5 3.5
8  3.5, 5.5 3.5, 5.5 5.5
10-12,5 5.5, 8 5.5, 8
16 8, 10  8, 10 8, 10 10 
19-25,4 10, 15 15 15, 20 20 
31,5 15, 20 15, 20 20

*Bulk density max 1,8 metric ton/m3

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