Continuous High-Throughput Dewatering on Rotary Vacuum Drum Filters

Skytech Ultrafab Rotary Vacuum Drum Filter Cloth is precision-woven for continuous dewatering of mining slurries, chemical precipitates, wastewater sludge, and paper pulp on rotary vacuum drum (RVD) filters. Available in polypropylene, polyester, and nylon mono/multifilament weaves with custom porosity, the cloth is manufactured to the exact drum circumference and width specifications of all major RVD OEM manufacturers.

What Is Rotary Vacuum Drum Filter Cloth?

Rotary Vacuum Drum Filters (RVDFs) are continuous filtration machines in which a slowly rotating horizontal drum — covered with filter cloth — partially submerges in a slurry trough. Vacuum applied inside the drum draws liquid through the filter cloth, depositing a filter cake on the drum exterior. As the drum rotates, the cake is washed, dried under vacuum, and then discharged by a doctor blade or string discharge mechanism. The filter cloth must combine accurate micron retention with cake release properties suited to the specific process.

Features and Benefits

• Optimised for Continuous Duty: Woven construction engineered for 24/7 operation under continuous vacuum — dimensional stability prevents cloth sagging or slipping on the drum surface
• Anti-Blinding Weave: Specially designed weave patterns resist particle embedment for longer wash-cycle intervals between cloth cleaning stops
• Superior Cake Release: Smooth surface treatments and optimised yarn surface energy enable complete cake discharge at the doctor blade without residual cake adhesion
• Custom Drum Dimensions: Manufactured to exact drum circumference and face width — supplied as a joined loop or open-end cloth for on-site splicing
• Multiple Material Options: Polypropylene, polyester, and nylon in monofilament, multifilament, and blended yarn constructions to cover the full range of slurry chemistry
• Edge Finishing: Heat-sealed or sewn reinforced edges extend cloth service life at the high-wear drum edge contact zones

Technical Specifications

Applications

• Mining and Mineral Processing: Continuous dewatering of copper, nickel, zinc, iron ore, and coal concentrate slurries on large rotary vacuum drum filters
• Chemical Manufacturing: Sodium sulphate, calcium carbonate, titanium dioxide, and specialty chemical precipitate dewatering in continuous RVDF operation
• Paper and Pulp: White water fibre recovery and bleached pulp washing on vacuum drum washers in paper mill operations
• Municipal Wastewater: Continuous sludge dewatering on rotary vacuum drum filters at municipal wastewater treatment works
• Sugar Industry: Mud filtration on rotary drum vacuum filters in cane sugar factories for massecuite and clarification mud separation

Why Choose Skytech Ultrafab for Rotary Vacuum Drum Filter Cloth?

• Drum-Specific Manufacturing: Each cloth is manufactured to the exact circumference and width of the target drum — no field splicing errors, no bypass zones
• Anti-Blinding Technology: Proprietary weave constructions and surface treatments reduce blinding frequency — extending continuous operating time before cloth wash cycles
• In-House Weaving and Finishing: Full control from yarn selection through weaving, heat-setting, and edge finishing for consistent lot-to-lot cloth performance
• Technical Application Review: Application engineers review slurry characteristics, drum specifications, and discharge method before specifying the optimal cloth construction
• Global OEM Experience: Cloth supplied for drum filters from Andritz, BHS, EIMCO, WesTech, and all local OEM drum filter manufacturers