🔄 Rotary Vacuum Drum Filter (Ruth Filtration)
Size continuous rotary vacuum drum filters, computing dry cake production rate (kg/h), filtrate volumetric capacity (m3/h), cake thickness, and cycle times.
⚡ Fortran 90 Engine
Double Precision (IEEE 754)
✓ ISO / ASME Validated
📊 Solver Telemetry
● ACTIVE
👁️ Consultations
31
⚡ Calculs faits
24
💾 Téléchargements
336
📦 Code Fortran
6.4 KB
📅 Mise en service
Jun 2026
⏱️ Latence
< 1 ms
🔄 Continuous Rotary Vacuum Drum Filter & Scraper Blade Discharge
Real-time visual simulation of slurry immersion, cake formation, dewatering & doctor knife peeling📝 Configuration & Presets
🪨 Calcium Carbonate (PCC)
🍺 Yeast Biomass Dewatering
⛏️ Mining Iron Ore (3m x 4.5m)
🌾 Starch Precoat Filter
Ruth Cake Filtration Formulations:
• Cycle Time: tc = 60 / Nrpm [s] (Formation: tf = ψ · tc)
• Ruth Volume: Vf = Asub · [ √( (Rm/αw)² + (2 ΔP tf)/(μαw) ) − Rm/αw ]
• Filtrate Rate: Q = (Vf / tc) × 3600 [m³/h]
• Dry Cake Rate: Ṁcake = w · Q [kg/h]
• Cycle Time: tc = 60 / Nrpm [s] (Formation: tf = ψ · tc)
• Ruth Volume: Vf = Asub · [ √( (Rm/αw)² + (2 ΔP tf)/(μαw) ) − Rm/αw ]
• Filtrate Rate: Q = (Vf / tc) × 3600 [m³/h]
• Dry Cake Rate: Ṁcake = w · Q [kg/h]
📊 Filter Sizing Results
Configure inputs and click Compute to view results.
📘 Calculation Methodology & Rotary Drum Standards
Ruth Continuous Cake Filtration
The rate of cake growth is parabolic in time, with Darcy permeability governed by the specific cake resistance $\alpha$ and medium resistance $R_m$:
dt/dV = (μ α w / (A² ΔP)) V + (μ Rm / (A ΔP))
Submergence & Cycle Zoning
The drum circumference is divided into distinct functional zones: cake building ($30-40\%$), wash zone ($15\%$), vacuum dewatering drying ($35\%$), and knife blowback scraper discharge ($10\%$).
Key Engineering Assumptions
- Incompressible cake assumption ($\alpha = \text{constant}$).
- Uniform drum submergence and slurry agitation.
- Sufficient cake thickness ($> 3\,\text{mm}$) for clean knife peeling.