This page explains how Rotary Granulation Drum is classified within Chemical Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A rotating cylindrical vessel where urea melt is sprayed onto seed particles and solidified into granules through cooling and tumbling action.
Technical details and manufacturing context for Rotary Granulation Drum
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Rated Capacity | 5–50 t/h | Based on urea melt feed rate |
| Drum Diameter | 2.0–4.5 m | Determines residence time and throughput |
| Drum Length | 6–18 m | Length-to-diameter ratio 2.5–4 |
| Rotational Speed | 2–8 rpm | Adjustable for granule growth and tumbling |
| Drum Inclination | 1–3 ° | Affects material flow and residence time |
| Operating Temperature | 100–140 °C | Urea melt inlet temperature |
| Cooling Air Temperature | 20–40 °C | Inlet cooling air for solidification |
| Granule Size Range | 1–4 mm | Typical urea granule diameter |
| Granule Size Uniformity | ±0.5 mm | Sieve analysis deviation from mean |
| Material of Construction | 316L | Corrosion-resistant for urea serviceASTM A240 |
| Drive Power | 45–250 kW | Depends on drum size and load |
| Total Weight | 30–120 t | Including drum, drive, and support structure |
| IP Rating | IP54–IP65 | Protection for electrical enclosuresIEC 60529 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
| pressure: | Atmospheric to 0.5 bar gauge (for dust control systems) |
| flow rate: | 5-100 tons/hour (urea production capacity) |
| temperature: | 50-150°C (typical urea melt spray temperature range) |
| residence time: | 10-60 minutes (for complete granule formation) |
| rotation speed: | 5-25 RPM (for proper tumbling action) |
| slurry concentration: | Not applicable - uses urea melt (95-99.5% concentration) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
Manufacturer profiles associated with Rotary Granulation Drum.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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Based on the urea melt feed rate, the rated capacity is typically 5 to 50 tonnes per hour. However, the exact capacity depends on the specific model and operating conditions, so it must be confirmed with the manufacturer.
The shell is commonly made of carbon steel, while internal lifters and the spray system are stainless steel. An abrasion-resistant lining is also used. For wetted parts, 316L stainless steel per ASTM A240 is specified, but verify the actual materials with the supplier.
Granule size is influenced by the drum's rotational speed, inclination, and internal flights, which affect residence time and tumbling action. The spray rate and cooling air conditions also play a role. The typical granule size range is 1 to 4 mm with a uniformity of ±0.5 mm.
Regular inspection of the abrasion-resistant lining and internal lifters is necessary. Spray nozzles should be checked for clogging, and the drive system should be monitored for wear. Any abnormal vibration or reduced product quality may indicate a need for maintenance.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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