---
title: "Rotary Drum Granulator for Compound Fertilizers"
industry: "Fertilizers and Nitrogen Compounds Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ROTARY_DRUM_GRANULATOR_FOR_COMPOUND_FERTILIZERS"
  data_integrity_hash: "5b50ced6c0baf129107040bf1e5a3f88"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:ROTARY_DRUM_GRANULATOR_FOR_COMPOUND_FERTILIZERS"
  data_source_uri: "https://cnfx.com/llms/industry/fertilizers-nitrogen-compounds-manufacturing/product/rotary-drum-granulator-for-compound-fertilizers.md"
  official_resource_url: "https://cnfx.com/industry/fertilizers-nitrogen-compounds-manufacturing/product/rotary-drum-granulator-for-compound-fertilizers"
  is_verified_logic: true
attributes:
  drum_diameter:
    status: "config-dependent"
    typical_range: "0.5-3.0 rpm drum rotation, 60-120°C process temperature, 15-25% moisture content in feed material"
    unit: "meters"
  production_capacity:
    status: "config-dependent"
    typical_range: "Scalable via configuration"
    unit: "tons/hour"
engineering_limits:
  max_safe_operating_point:
    value: 3.5
    unit: "rpm"
    consequence: "Excessive centrifugal force at high rotation rates overcomes cohesive forces between particles (van der Waals forces &lt; 0.1 eV); thermal decomposition follows Arrhenius kinetics with activation energy of 80-100 kJ/mol for ammonium nitrate"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Bearing lubrication failure due to contamination ingress exceeding ISO 4406 18/16/13 cleanliness level"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Sealed-for-life bearings with IP66 rating and automated grease injection at 1000-hour intervals"
  - node_2:
      trigger: "Material buildup exceeding 15mm thickness on internal lifters due to improper binder ratio"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Automated scraper system with 316L stainless steel blades activated when torque exceeds 120% of nominal value"
bom_nodes:
  rotating-drum-shell:
    type: "part"
    urn: "URN:CNFX:ME:ROTATING_DRUM_SHELL"
    interface_type: "physical-logic-coupled"
  main-drive-system:
    type: "part"
    urn: "URN:CNFX:ME:MAIN_DRIVE_SYSTEM"
    interface_type: "physical-logic-coupled"
  support-rollers-and-thrust-rollers:
    type: "part"
    urn: "URN:CNFX:ME:SUPPORT_ROLLERS_AND_THRUST_ROLLERS"
    interface_type: "physical-logic-coupled"
  internal-lifter-plates:
    type: "component"
    urn: "URN:CNFX:ME:INTERNAL_LIFTER_PLATES"
    interface_type: "physical-logic-coupled"
  liquid-binder-spray-system:
    type: "part"
    urn: "URN:CNFX:ME:LIQUID_BINDER_SPRAY_SYSTEM"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING (MACHINERY DIRECTIVE 2006/42/EC)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/fertilizers-nitrogen-compounds-manufacturing/product/rotary-drum-granulator-for-compound-fertilizers.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "ba65c6daa5717b9101fe85c0e20e9072fba4ea92510c4b45a5d40e7b074d803c"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Rotary Drum Granulator for Compound Fertilizers

## 1. Technical Definition
Industrial machine for producing uniform fertilizer granules via rotary drum agglomeration.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-3.0 rpm drum rotation, 60-120°C process temperature, 15-25% moisture content in feed material**. Failure boundary: **Drum rotation exceeding 3.5 rpm causes centrifugal force &gt; 0.4g, leading to particle ejection; temperature &gt; 130°C initiates ammonium nitrate decomposition at 210°C onset temperature**, Mechanism: **Excessive centrifugal force at high rotation rates overcomes cohesive forces between particles (van der Waals forces &lt; 0.1 eV); thermal decomposition follows Arrhenius kinetics with activation energy of 80-100 kJ/mol for ammonium nitrate**.

### 2.1 Analytical Physics Model
Governed by the **L10 Bearing Life & Fatigue Model**:

> **Primary Equation**: $L_{10} = (\frac{C}{P})^p$  
> **Engineering Impact**: Predicts mechanical lifecycle before component fatigue.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| C | Dynamic Load Rating | Engineering Constant |
| P | Equivalent Dynamic Load | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Bearing lubrication failure due to contamination ingress exceeding ISO 4406 18/16/13 cleanliness level | 8 | Increased friction coefficient from 0.0015 to &gt;0.005 causes bearing temperature rise &gt; 70°C above ambient | Sealed-for-life bearings with IP66 rating and automated grease injection at 1000-hour intervals |
| Material buildup exceeding 15mm thickness on internal lifters due to improper binder ratio | 8 | Dynamic imbalance force &gt; 500 N at operating speed, exceeding ISO 1940 G6.3 balance grade | Automated scraper system with 316L stainless steel blades activated when torque exceeds 120% of nominal value |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| drum_diameter | Config-dependent | meters | Verified |
| production_capacity | Config-dependent | tons/hour | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Rotating Drum Shell](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotating-drum-shell.md) `(Standalone System)`
- [Main Drive System](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/main-drive-system.md) `(Standalone System)`
- [Support Rollers and Thrust Rollers](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/support-rollers-and-thrust-rollers.md) `(Standalone System)`
- [Liquid Binder Spray System](https://cnfx.com/llms/industry/chemical-manufacturing/product/liquid-binder-spray-system.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Raw Material Feeder**, **Rotary Dryer**, **Screening Machine**  
**Downstream Applications**: NPK Compound Fertilizer Granules, DAP Fertilizer Granules, MAP Fertilizer Granules  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in the construction of this rotary drum granulator?
**A**: The drum shell is made of carbon steel, internal liners and spray system use stainless steel for corrosion resistance, and lifter plates are constructed from wear-resistant alloy for durability.

### Q: What is the production capacity range for this granulator?
**A**: Production capacity varies based on drum dimensions and configuration, typically ranging from several tons to over 100 tons per hour depending on specific model specifications.

### Q: How does the rotary drum granulation process work for compound fertilizers?
**A**: The process involves tumbling raw materials in a rotating drum while spraying liquid binder, forming uniform granules through agglomeration as materials adhere and grow in size.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING (MACHINERY DIRECTIVE 2006/42/EC)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Rotary Drum Granulator for Compound Fertilizers](https://cnfx.com/industry/fertilizers-nitrogen-compounds-manufacturing/product/rotary-drum-granulator-for-compound-fertilizers)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: ROTARY_DRUM_GRANULATOR_FOR_COMPOUND_FERTILIZERS | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 62ed6513
