Hopefully the previous chapters of the Knowledge Hub have given you a clear idea of how different types of screening media are appropriate for different applications and scenarios. At Sandvik, we’ve devised a range of screening media that can deliver excellent performance across the board. Our selection is organized around four categories, within which there are countless options and variables.
This guide should give you a good understanding of which choice makes most sense for your operation. To take a deeper dive into the entire Sandvik selection, you can visit this part of our website and access the specifications for all types of screening media.
Modular screening systems – that is, where screen decks are overlaid with a series of smaller panels or modules – often provide flexibility, productivity, and long-term value. Sandvik’s range of modular screening media certainly offer these benefits, but they also deliver impressive capacity and accuracy.
Suitable for many applications, Sandvik’s WN series is designed for a flat deck configuration (that is, without a camber).
Modules from the WN series (these are from the WN8000 range) connect to the screen via an intuitive ‘pin and sleeve’ system.
This allows the material bed to be spread evenly across the screen, improving efficiency. Both the rubber and polyurethane options are hard-wearing, so you can expect long maintenance intervals and short downtime. The combination of these features – the even spread across the width of the screen and the potential for long uptime – adds up to a high-capacity screening solution.
The WN series has a large open area, which contributes to its high accuracy. Optional features like material deflectors and dam bars, as well as the range of aperture sizes, shapes and panels, make it easy to optimize your screen for its specific application. The result is more accurate screening and less misplaced particles in the final product.
The modules attach to the screens’ longitudinal beams (stringers) via a reliable pin and sleeve fastening system. They are easy to change too, so worn modules can be quickly replaced and you can switch media to suit your needs without excessive downtime.
It is an endlessly adaptable and flexible system, that is arranged into three categories with a host of further options (screen length and thickness, and aperture size, shape and pattern). The three categories are:
These are anti-blinding modules, made from soft rubber and reinforced with a steel frame. This material is light, noise-dampening, abrasion resistant and is designed to reduce blinding, pegging and build-up of material on the screen deck. As a result it’s especially effective for fine screening in difficult conditions, with a separation between 2 and 16mm and a maximum feed size of 50mm.
These modules are also made from rubber, though they are harder (60° and 70° Shore A) than the WN4000 and WN5000 ranges. As a result they are suitable for fine to medium coarse screening with a separation between 10 and 63mm and a maximum feed size of 150mm. They are available with punched or molded apertures in a variety of sizes, shapes and patterns.
Since these modules are made from polyurethane, they are especially useful for wet screening. They are long-lasting, low-weight modules primarily designed for fine to medium coarse screening with a separation between 1 and 31.5mm and a maximum feed
size of 100mm.
Read more about Modular screening media
WX6000 Tensioned screening media
This type of screening media is still the most widely used, so Sandvik offer a range that can fit almost any screen on the market, normally without the need for modification. Tensioned means the media is fastened tightly to the sides or the ends of the screen, and kept taut.
Sandvik produce tensioned screen media with different specifications, but there are a few characteristics that apply across the entire range:
Durability: Whether made from rubber or polyurethane, Sandvik’s tensioned screening media lasts significantly longer than wire mesh alternatives. This can result in lower costs in the long-term, but it also reduces the amount of downtime spent replacing media – providing an opportunity for even greater productivity and profitability. They are designed to be easily installed too, reducing downtime even further.
Customizable: Sandvik’s tensioned screening media is tailored for the specifications of your screen. They are all available in a range of lengths, widths and thicknesses, with other sizes available on request. A variety of hooks are available, for both cross- and longitudinal-tensioning, so they can be attached to almost any screen on the market.
Light: Because they are so much lighter then wire mesh alternatives, all the media in this range are cheaper to transport and easier to install. They are also significantly quieter than wire mesh.
Sandvik currently offer four categories of tensioned screening media, all with several customization options. Here’s a quick summary.
These rubber panels are designed for screens with cambered decks and support bars, to be used for fine to medium coarse dry screening (separations between 5.6 and 63mm, with a maximum feed size of 150mm). They are suitable for either cross- or length-tensioned screens and their flexibility helps reduce pegging and blinding. Reinforced with polyester cord fabric, they can be optimized either to maximize capacity or to deliver the longest possible wear life.
Because of their thinness and impeccable design, this range of screening offers the accuracy of wire mesh, along with all the benefits of rubber: durability, low-weight, low-noise, and with less pegging and blinding. They deliver high accuracy for fine screening (2 to 32mm separations).
The WX7000 range offers an outstanding combination of long-life and anti-blinding properties. Made from polyurethane with steel wire reinforcement, they stay clean and resist blinding, even in difficult condition. These are your best choice for fine screening 2 to 16mm material where fines are combined with moisture. They can have a lifetime of up to 20 times longer than wire mesh alternatives, they have a large open area, and they’re designed with dam bars for increased accuracy.
These are made from polyurethane with molded holes, so they offer the benefits of the other Sandvik tensioned media range, but in a material that is especially effective for fine to medium screening in wet applications.
Read more about Tensioned screening media
Sandvik’s range of self-supporting screening media is designed to withstand the rigors of heavy-duty applications. They are made from hard-wearing rubber (60° Shore A) with angle steel bar frames reinforced with steel flat bars. Created with the quarrying and mining industries in mind, they can handle medium-coarse to coarse screening, including primary scalping.
WS6000 screen panels
The WS6000 and WS6000H models are kept in place with Sandviks’s durable side hold down securing system – screens wider than 1.5m are also held down in the center. The WS6000H models include skid bars that keep larger (300 to 400mm) boulders off the panel surface, guiding fine material toward the holes and preventing excessive wear.
As with all Sandvik screening media, the self-supporting range is available in different lengths, widths, and thicknesses, with various aperture sizes, shapes and patterns, to ensure you can find the ideal match for your operation.
Read more about Self-supporting screening media
Sandvik produce a range of pre-tensioned screening media, that combine many of the advantages of tensioned and self-supporting systems. They can be installed on the types of crowned screen decks that are normally fitted with wire mesh or other tensioned screen panels, and are often a better choice for tougher applications. You can even set up your screen with blank sections in any places that experience a lot of localized wear.
WK8500 Pre-tensioned polyurethane screen panels
The panels are easy to install (with side and center hold-down bars), and provide a degree of flexibility to reduce pegging and blinding. They are reinforced with steel flat bars which gives them stability but also allows them to be rolled to a radius, making them suitable for trommel screens.
The WK6000 series has a rubber exterior for dry applications with feed size between 30 and 250mm, while the WK8500 is made from polyurethane and is designed for wet applications with feed size between 10 and 100mm
Read more about Pre-tensioned screening media