Continuous high-volume duty
Multiple discs provide substantial filtration area within a compact footprint. The rotating cycle supports steady feed, filtrate removal and cake discharge.
PG Series · Continuous cloth-media filtration
PG Series Vacuum Disc Filter for Mining Dewatering
BOYUN’s PG Series vacuum disc filter provides continuous solid–liquid separation for filterable mineral concentrates and mine tailings. Models from 5 to 144 m² combine a compact filtration footprint, replaceable cloth sectors and configurable vacuum equipment for stable, high-throughput dewatering.
21–297.5 kWListed total-power range
2.1 / 2.6 / 3.1 mAvailable disc diameters
Continuous cycleFormation, drying and discharge
Concentrate & tailingsSubject to filterability
Broad-duty mining disc filter
Compare Disc Filter TypesWhere the PG Vacuum Disc Filter Fits Best
The PG Series is the practical starting point when a mineral slurry forms a stable cake under vacuum and the plant values continuous throughput, flexible cloth selection and maintainable mechanical systems.
Cloth selected for the slurry
Filter-cloth permeability, weave and material can be matched to particle retention, filtrate clarity, cake release and slurry chemistry.
Accessible replaceable sectors
Sector plates, cloth bags, clamps and related wear parts can be inspected and replaced without treating the entire disc as a single consumable.
Good candidate duties
Iron, copper and lead-zinc concentrates; filterable mineral tailings; and other slurries that produce a permeable, mechanically releasable cake.
Rotary vacuum filtration cycle1 2 3 4 5
How a Vacuum Disc Filter Works
Each sector passes through the same continuous sequence. Filtration rate and cake moisture depend on how the slurry responds during every stage.
Slurry immersion
Agitation keeps solids suspended while the lower sectors enter the conditioned feed.
Cake formation
Vacuum draws liquid through the cloth and deposits solids on the sector surface.
Dewatering
Continued vacuum removes interstitial water as the cake leaves the slurry level.
Drying
Air passes through the cake during the drying arc before the discharge point.
Cake release
Timed blowback and mechanical assistance release the cake before cloth washing.
Mining applications
Concentrate and Tailings Dewatering Duties
Application pages explain ore-specific feed behavior and selection questions. A mineral name is a starting point; representative slurry data remains the basis for sizing.
Iron Ore ConcentrateHigh-throughput filtration after beneficiation and thickening.Copper ConcentrateBalance moisture, valuable-fines retention and cake handling.Lead-Zinc ConcentrateReview mineralogy, reagent effects and filtrate requirements.Mine TailingsAssess water recovery, cake strength and dry-stack handling.
Technical specifications
PG Series Vacuum Disc Filter Models
The table lists selected standard configurations from BOYUN’s current product data. Motor selection, vacuum arrangement, materials and dimensions may change with the slurry and project scope.
| Model | Area (m²) | Spindle | Vacuum pump | Agitator | Total power | Dimensions (mm) | Weight |
|---|---|---|---|---|---|---|---|
| PG10 | 10 | 4 | 22 | 5.5 | 31.5 | 2950 × 2600 × 2628 | 3.9 |
| PG15 | 15 | 4 | 37 | 5.5 | 46.5 | 3320 × 2600 × 2628 | 4.6 |
| PG20 | 20 | 4 | 37 | 5.5 | 46.5 | 3710 × 2600 × 2628 | 5.0 |
| PG30 | 30 | 4 | 75 | 5.5 | 84.5 | 4510 × 2600 × 2650 | 6.0 |
| PG35 | 35 | 5.5 | 90 | 7.5 | 103 | 4510 × 2600 × 2650 | 6.3 |
| PG40 | 40 | 5.5 | 75 | 7.5 | 88 | 5270 × 2600 × 2650 | 7.0 |
| PG45 | 45 | 5.5 | 75 | 7.5 | 88 | 5660 × 2600 × 2650 | 7.6 |
| PG50 | 50 | 5.5 | 90 | 7.5 | 103 | 6050 × 2600 × 2650 | 8.0 |
| PG60 | 60 | 7.5 | 110 | 11 | 128.5 | 6830 × 2600 × 2650 | 9.0 |
| PG80 | 80 | 7.5 | 132 | 11 | 150.5 | 5980 × 2790 × 3080 | 10.0 |
| PG96 | 96 | 11 | 160 | 18.5 | 189.5 | 6700 × 3850 × 3725 | 12.0 |
| PG120 | 120 | 11 | 200 | 18.5 | 229.5 | 7700 × 3850 × 3725 | 15.0 |
| PG144 | 144 | 15 | 2 × 132 | 18.5 | 297.5 | 8200 × 3850 × 3725 | Project-specific |
Specifications are a selection range
Confirm voltage, frequency, altitude, corrosion allowance, cloth, vacuum pumps, filtrate receivers, controls and battery limits in the technical proposal.
Maintainable filtration system
Design Details That Control Daily Operation
Reliable filtration depends on the complete air and liquid path. BOYUN reviews the rotating assembly, cloth sectors, distribution valve, vacuum system and cake discharge as one operating system.
01
Sector and cloth compatibility
Sector support, cloth fit and sealing affect filtrate clarity, vacuum loss and replacement time.
02
Vacuum and filtrate management
Pump selection, receivers, piping and valve timing must maintain useful vacuum without carrying excess liquid.
03
Stable slurry suspension
Agitation and feed control reduce settling and uneven cake formation across the discs.
04
Repeatable cake discharge
Blowback, cloth condition and mechanical settings work together to release cake cleanly.
Project sizing inputs
Send the Data That Changes the Selection
A useful quotation connects the PG model, filtration area and auxiliary equipment to your actual duty.
MaterialMineral, concentrate or tailings, mineralogy
ThroughputDry t/h or t/day and operating hours
FeedSolids concentration, P80, fine fraction, pH
TargetCake moisture, filtrate clarity, recovery priority
VariabilityNormal, minimum and maximum feed conditions
SiteElevation, climate, voltage and frequency
LayoutAvailable footprint and cake discharge elevation
DocumentsFlowsheet, PSD, testwork and current equipment
Compare before specifying
When Another Disc Filter Type May Be Better
The PG Series is not the default answer for every plant. Compare lifecycle priorities before final selection.
Reduce vacuum-system energy demand
If annual electricity consumption is a major project driver, evaluate the TP Series using a defined operating baseline.
Compare the TP energy-saving disc filterRemove recurring filter-cloth consumption
For suitable fine concentrates, ceramic plates may provide cloth-free filtration and strong particle retention.
Compare the BY ceramic disc filterVacuum disc filter FAQ
PG Series Selection Questions
Answers for engineers comparing capacity, moisture, cloth maintenance and tailings suitability.
What is a vacuum disc filter?
A vacuum disc filter is a continuous rotary filtration machine. Multiple filter sectors rotate through slurry, use vacuum to form and dewater a cake, then release that cake before the sectors return to the slurry. Mining plants use the technology for suitable concentrate and tailings duties.
What determines the capacity of a PG Series disc filter?
Dry-solids filtration rate under the actual slurry conditions determines capacity. Feed solids, particle-size distribution, mineralogy, cake thickness, vacuum level, disc speed, immersion and target moisture all affect the required filtration area. Use BOYUN’s disc filter sizing process for project selection.
What cake moisture can a vacuum disc filter achieve?
Cake moisture cannot be predicted responsibly from the mineral name alone. It changes with fine fraction, clay content, feed conditioning, cake structure, vacuum and drying time. If moisture is commercially critical, send a representative sample for a filterability test.
How is the filter cake discharged?
After dewatering and drying, the PG Series releases cake using controlled blowback and mechanical assistance appropriate to the sector and cloth arrangement. Stable discharge also depends on cake thickness, cloth condition, valve timing and the slurry’s release characteristics.
How often does the filter cloth need replacement?
There is no universal interval. Abrasion, particle size, chemistry, washing quality, cloth selection and operating discipline control service life. Monitor permeability, filtrate clarity, cake release and physical damage rather than replacing cloth only by calendar time.
Can a vacuum disc filter be used for tailings dry stacking?
It can be considered for continuously filterable tailings that form a handleable cake. Ultra-fine or high-clay tailings may require conditioning, pre-thickening, another filter technology or pilot testing. Review the full tailings dry-stacking system, including conveying and placement.
What information is required for a quotation?
Send mineral type, concentrate or tailings duty, dry throughput, feed solids, particle size or P80, target cake moisture, operating hours, site elevation and utilities. Attach a flowsheet or test report when available through the disc filter quote form.
Size a PG Vacuum Disc Filter for Your Slurry
Send BOYUN the dry throughput, feed solids, particle size and moisture target. An application engineer will identify the data gaps and recommend the next test or sizing step.