Woven wire mesh is the most traditional screening surface. It provides the highest open area for a given aperture size, which maximises capacity and promotes fast stratification of particles. It also delivers a very accurate cut size, making it popular for sizing applications. The trade-off is shorter wear life compared to synthetic media, especially in highly abrasive duties.
Standards such as ISO specify aperture tolerances and quality control for industrial woven wire, ensuring consistency across suppliers. Wire remains a common choice for top decks in dry screening or where frequent panel change-outs are manageable.
Polyurethane panels are widely used in mining for their durability and versatility. PU provides excellent wear resistance and impact absorption, making it ideal for abrasive ores or high-tonnage circuits. While PU has less open area compared to wire, its extended wear life often offsets this limitation. Advances in polyurethane formulations, such as open-cast casting or hybrid technologies, have further improved longevity compared to older injection-moulded styles. Modular PU panels are available in many fastening options, allowing mines to swap individual panels without replacing the entire deck.
Wedge wire panels use V-shaped profiles that create continuous slots, providing excellent drainage capacity. They are widely used in dewatering, desliming, and fine slurry separation. Polywedge versions embed the wedge profiles in polyurethane, combining structural rigidity with impact resistance. Wedge wire is particularly important in tailings management and water recovery circuits, where maintaining open drainage pathways is critical to throughput.
Rubber is the best choice for absorbing heavy impacts and handling sharp, abrasive ore. Panels or sheets made of rubber are often installed at the feed end of the screen, where material first lands and wear is the highest. Rubber also dampens vibration and reduces noise, which improves operator safety and site working conditions. It sacrifices some open area compared to wire, but in applications such as iron ore screening, the benefit of extended life outweighs the loss of throughput.
Self-cleaning wire panels solve one of the biggest issues in screening: blinding and pegging. These designs use independently vibrating wires or flexible wire structures that move during operation, preventing material from clogging apertures. This makes them highly effective in sticky or clay-rich ores, or when dealing with a lot of near-size material. The result is higher throughput and less downtime or cleaning. They are often used in gold or lithium operations where moisture and clay are present.
Punch plate is a solid steel or alloy plate with holes punched or drilled to size. It is extremely durable and is most often used on to decks where material impact is severe, such as scalping duties. While not as precise as wire or PU, it can withstand high drop heights and sharp, blocky or without premature failure. Its job is usually to protect the finer media below while removing the largest oversize.
There are a wide variety of screening media that can be installed in vibratory screeners. Our challenge is to select which type would be best suited for your application. You can refer back to my blog: Importance of screening data from May to review the technical data that would best assist us in making screener recommendations. Some of this data would also be appropriate for selecting screening media. This blog is the first in a series that will be dedicated to typical screening media that are installed in Vibratory Screeners with their advantages and disadvantages so you can be in a better position to assist us in the selection process.
For more information, please visit Red Star Wire Mesh.
Woven Wire Cloth
This is the most common and widely used screening media for many applications including scalping, sizing and dewatering. Woven wire cloth is typically designated as space screen (clear openings) or square mesh. Space screen is the inside dimensions of the opening which should be further designated with a specific wire diameter. Please note that the wire diameter doesn’t affect the screen opening, but does affect the open area (percentage of opening space available in a screen section). Square mesh is the number of openings in one lineal inch measured from centerline to centerline of the diameter of the wires. Therefore, the same mesh could have several opening sizes available dependent on the wire diameter selected. For example, the openings will be smaller as heavier wires are selected.
Woven wire cloth is widely accepted for most screening applications. It is best suited for medium to fine screening and is available in the widest variety of metals with carbon steel and stainless steel being the most common. While square openings are the most common, it can also be supplied with slotted openings to provide more capacity and increased open area.
In short, here are the advantages of Woven Wire Cloth:
It is important to note the disadvantages as well which include:
In most cases the advantages far outweigh the disadvantages but in order to make a good decision about your best option, you need to have access to the knowledge to help in making an educated decision. That’s where we come in. You can now hopefully see why extremely versatile woven wire cloth was selected to kick off this series. Speaking of kick off, how bout those Browns! Stay tuned for information on other screening media (and hopefully Brown’s victories) to follow.
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