Structured Manufacturing Data (2026)

Rotary Granulation Drum

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Rotary Granulation Drum used in the Chemical Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Rotary Granulation Drum is characterized by the integration of Drum Shell and Internal Lifters (Fights). In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel (Shell) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A rotating cylindrical vessel where urea melt is sprayed onto seed particles and solidified into granules through cooling and tumbling action.

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Product Specifications

Technical details and manufacturing context for Rotary Granulation Drum

Definition
The Rotary Granulation Drum is a core component within the Modular Urea Granulation and Prilling System. It is a large, inclined, rotating cylinder where a concentrated urea melt is atomized and sprayed onto a cascading bed of recycled seed particles (fines). As the drum rotates, the particles grow in size through successive layering (layering granulation). Simultaneously, a counter-current flow of cooling air solidifies the urea coating, forming hard, spherical granules. The drum's rotation, angle, and internal flights control the particle residence time, growth rate, and final product size distribution.
Working Principle
Operates on the principle of layering granulation. Urea melt is sprayed onto a moving bed of seed particles inside the rotating drum. The tumbling action caused by rotation and internal lifters ensures uniform coating. Evaporative and convective cooling from the air flow solidifies the liquid film on each particle, causing granule growth. The drum's inclination and rotational speed determine the throughput and granule size.
Common Materials
Carbon Steel (Shell), Stainless Steel (Internal Lifters/Spray System), Abrasion-Resistant Lining
Technical Parameters
  • Diameter and length of the drum, defining its capacity and granule growth residence time. (mm) Customizable
Components / BOM

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Rotary Granulation Drum.

rotary granulation drum for urea production carbon steel urea granulation equipment stainless steel spray system granulation drum abrasion-resistant lined rotary drum chemical manufacturing industrial urea granulator with internal lifters

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
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)
Media Compatibility
✓ Urea melt (primary application) ✓ Ammonium nitrate melt ✓ NPK fertilizer formulations
Unsuitable: Highly corrosive acidic or alkaline environments (e.g., phosphoric acid production)
Sizing Data Required
  • Required production capacity (tons/hour)
  • Desired granule size distribution (e.g., 2-4 mm)
  • Available installation space and layout constraints

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing failure due to misalignment or contamination
Cause: Improper installation leading to shaft misalignment, ingress of abrasive granulation material or moisture into bearing housings, inadequate lubrication intervals or incorrect lubricant type
Drum shell wear and perforation
Cause: Abrasive action of raw materials and granules against the drum interior, corrosion from chemical residues or moisture in the process, impact damage from oversized feedstock or foreign objects
Maintenance Indicators
  • Unusual rhythmic thumping or grinding noises during rotation indicating bearing damage or material buildup
  • Visible material leakage from drum seals or shell, or excessive vibration observed on support structure
Engineering Tips
  • Implement laser alignment verification during installation and after major maintenance, and establish strict bearing lubrication schedules using high-temperature, moisture-resistant grease suitable for the operating environment
  • Install wear liners or apply protective coatings to the drum interior, and utilize real-time vibration monitoring with automated alerts for abnormal patterns

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems CE Marking - Machinery Directive 2006/42/EC ASTM E11-20 - Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves
Manufacturing Precision
  • Drum Cylindricity: +/- 0.5 mm per meter length
  • Bearing Journal Runout: 0.05 mm maximum TIR
Quality Inspection
  • Non-Destructive Testing (NDT) - Ultrasonic Testing for weld integrity
  • Dynamic Balancing Test - ISO 1940-1 G6.3 grade

Factories Producing Rotary Granulation Drum

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are used in the construction of this rotary granulation drum?

The drum features a carbon steel shell for structural integrity, stainless steel internal lifters and spray system for corrosion resistance, and an abrasion-resistant lining to withstand continuous tumbling action during urea granulation.

How does the rotary granulation drum process urea melt into granules?

Urea melt is sprayed through stainless steel nozzles onto seed particles inside the rotating drum. As the drum rotates, internal lifters tumble the material while cooling air solidifies the melt into uniform granules through controlled solidification and attrition.

What maintenance considerations are important for this equipment?

Regular inspection of the abrasion-resistant lining and internal lifters is crucial due to continuous abrasive action. The spray system nozzles require periodic cleaning to prevent clogging, and support rollers/trunnions need lubrication and alignment checks to ensure smooth rotation.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Chemical Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
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