Control moisture and recover water with FLS screening solutions

VSW dewatering screens deliver consistently low product moisture, with actual levels depending on particle size distribution, slurry characteristics, ore type, and application requirements. FLS screening experts will model the dewatering duty, recommend the appropriate VSW screen configuration and media type (urethane or slotted panels), and validate performance through site trials before full deployment. We also optimise motion settings—frequency, stroke, and deck angle—to maximise drainage rates while maintaining the cut-size accuracy your process requires. Regular Screening AssetHealth assessments help maintain consistent moisture performance as ore characteristics change over time. 

Dewatering screens can significantly reduce downstream equipment loads by recovering water early in the process. VSW Series screens remove water immediately after classification or beneficiation, returning it to the circuit before it reaches thickeners and filters. This early recovery reduces thickener overflow volumes and filter feed rates, potentially downsizing equipment requirements in greenfield projects or extending the operating life of existing thickeners and filters in brownfield operations. The exact impact depends on your circuit configuration, feed characteristics, and target moisture levels. FLS metallurgical and process experts model your complete dewatering flowsheet to quantify the water recovery and equipment capacity benefits. 

Dewatering screens excel at quickly removing free water from relatively coarse slurries with high solids content. They're most cost-effective after classification, beneficiation, or separation stages where water removal at the source reduces downstream equipment loads and improves circuit water balance. Screens are particularly valuable when product moisture matters for handling—conveyors, stockpiles, load-out—or when water recovery needs to happen fast to maintain circuit stability. For very fine slurries or when extremely low final moisture requirements exist, thickeners and filters remain the better choice. Often, the optimal solution combines technologies. FLS process experts will evaluate your complete flowsheet—particle size distribution, target moisture, throughput, and water balance objectives—and recommend the most cost-effective dewatering strategy, whether that's screens alone, screens plus thickeners/filters, or an alternative approach. 

Blinding is managed through three key factors: media selection, motion optimisation, and feed preparation. Dewatering-optimised panels (urethane or slotted designs) maximise open area while resisting plugging, while the specific panel configuration is matched to your particle size distribution and slurry chemistry. Motion settings are tuned to create sufficient particle movement to prevent plugging and maintain drainage efficiency. In some cases, feed preparation (dilution, pH adjustment, or staged dewatering) improves drainage characteristics and reduces the tendency to blinding. Regular Screening AssetHealth assessments will help identify blinding issues early by measuring actual screen motion and drainage performance, allowing you to adjust operating parameters before throughput suffers. Timely replacement of worn panels also maintains the open area and prevents progressive blinding. For challenging applications, our process experts can recommend spray systems, deck designs, or operational changes that minimise blinding while protecting dewatering performance. 

FLS dewatering screens deliver sustainability benefits throughout the water management cycle. Water stewardship is the primary advantage: screens recover water at the source and return it to the circuit immediately, reducing freshwater intake and supporting closed-loop operations. This early recovery also cuts the volume of water reporting to thickeners and filters, lowering overall energy consumption per tonne processed. Extended component life reduces replacement frequency and material consumption over the asset lifecycle. On the safety side, using UHS trash screens prevents hazardous material from entering process water systems, protecting both personnel and equipment, while maintenance-friendly designs minimise human-machine interactions.  

FLS screens deliver sustainability benefits throughout the comminution circuit. Energy efficiency gains are significant: accurate classification at SAG discharge and in mill circuits reduces over-grinding and lowers specific energy consumption per tonne - often the largest energy user in mining operations. By removing correctly sized material early, screens help mills work only on particles that need grinding, cutting unnecessary kWh consumption. Water stewardship improves through VSW dewatering screens that recover process water at the source, returning it to the circuit sooner and reducing demand on energy-intensive thickeners and filters. Extended component life through vibration isolation, optimised motion profiles, and precision-engineered spares reduces material consumption and waste over the asset lifecycle. Safety improves through UHS trash and safety screens that remove hazardous tramp material before it causes equipment damage or personnel risk, while access-friendly maintenance designs minimize human-machine interactions. On the process side, FLS specialists support operations with expert circuit design and operating envelopes optimised for lower water and energy intensity, with lifecycle support to maintain performance as conditions change.