--- type: "product_component" 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: "verified" value: "1.0–3.6" unit: "m" drum_length: status: "verified" value: "3–12" unit: "m" rotational_speed: status: "verified" value: "6–15" unit: "rpm" inclination_angle: status: "verified" value: "2–5" unit: "degrees" motor_power: status: "verified" value: "15–132" unit: "kW" production_capacity: status: "verified" value: "5–50" unit: "t/h" operating_temperature: status: "verified" value: "0–80" unit: "°C" granule_size_range: status: "verified" value: "1–4" unit: "mm" granulation_rate: status: "verified" value: "≥90" unit: "%" material: status: "verified" value: "Q235B / 316L" unit: "" weight: status: "verified" value: "10–60" unit: "t" ip_rating: status: "verified" value: "IP54–IP65" unit: "" 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 < 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" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotating-drum-shell.md" link_type: "product" link_target_urn: "URN:CNFX:ME:ROTATING_DRUM_SHELL" urn: "URN:CNFX:ME:ROTATING_DRUM_SHELL" interface_type: "physical-logic-coupled" is_standalone: true main-drive-system: type: "part" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/main-drive-system.md" link_type: "product" link_target_urn: "URN:CNFX:ME:MAIN_DRIVE_SYSTEM" urn: "URN:CNFX:ME:MAIN_DRIVE_SYSTEM" interface_type: "physical-logic-coupled" is_standalone: true support-rollers-and-thrust-rollers: type: "part" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/support-rollers-and-thrust-rollers.md" link_type: "product" link_target_urn: "URN:CNFX:ME:SUPPORT_ROLLERS_AND_THRUST_ROLLERS" urn: "URN:CNFX:ME:SUPPORT_ROLLERS_AND_THRUST_ROLLERS" interface_type: "physical-logic-coupled" is_standalone: true internal-lifter-plates: type: "component" llms_uri: "https://cnfx.com/llms/industry/chemical-manufacturing/component/internal-lifter-plates.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:INTERNAL_LIFTER_PLATES" urn: "URN:CNFX:ME:UNIT:INTERNAL_LIFTER_PLATES" interface_type: "physical-logic-coupled" is_migrated_part: true liquid-binder-spray-system: type: "part" llms_uri: "https://cnfx.com/llms/industry/chemical-manufacturing/product/liquid-binder-spray-system.md" link_type: "product" link_target_urn: "URN:CNFX:ME:LIQUID_BINDER_SPRAY_SYSTEM" urn: "URN:CNFX:ME:LIQUID_BINDER_SPRAY_SYSTEM" interface_type: "physical-logic-coupled" is_standalone: true manufacturing_compliance: - 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: "1eed620f0f9af25635d9c7e05b145c6ab97467faac765da9c31bc26d6a476957" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "Rotary Drum Granulator for Compound Fertilizers" - "rotary drum granulator" - "compound fertilizer granulator" - "NPK granulation equipment" - "drum granulator parameters" - "fertilizer granulation machine" - "Rotary Drum Granulator for Compound Fertilizers in Fertilizers Nitrogen Compounds Manufacturing" - "China Rotary Drum Granulator for Compound Fertilizers manufacturer" - "Rotary Drum Granulator for Compound Fertilizers supplier China" - "Rotary Drum Granulator for Compound Fertilizers drum_diameter" - "Rotary Drum Granulator for Compound Fertilizers drum_length" - "Rotary Drum Granulator for Compound Fertilizers rotational_speed" version: "3.3.5-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 > 0.4g, leading to particle ejection; temperature > 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 < 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 >0.005 causes bearing temperature rise > 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 > 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 | 1.0–3.6 | m | Verified | | Drum Length | 3–12 | m | Verified | | Rotational Speed | 6–15 | rpm | Verified | | Inclination Angle | 2–5 | degrees | Verified | | Motor Power | 15–132 | kW | Verified | | Production Capacity | 5–50 | t/h | Verified | | Operating Temperature | 0–80 | °C | Verified | | Granule Size Range | 1–4 | mm | Verified | | Granulation Rate | ≥90 | % | Verified | | Material | Q235B / 316L | | Verified | | Weight | 10–60 | t | Verified | | IP Rating | IP54–IP65 | | 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**, **Dished Ends** **Downstream Applications**: NPK Compound Fertilizer Granules, DAP Fertilizer Granules, MAP Fertilizer Granules ## 5. Engineering Risks & FAQ - **Caution**: - **Caution**: - **Caution**: ### Q: What is the typical capacity range of a rotary drum granulator? **A**: The design throughput is typically 5 to 50 tons per hour, depending on drum size and process conditions. Actual capacity must be confirmed with the manufacturer for your specific material and requirements. ### Q: What materials are used in the construction of the granulator? **A**: The drum shell is typically carbon steel (Q235B), internal liners and spray systems are stainless steel (316L), and lifter plates are made of wear-resistant alloy. Material selection depends on the corrosiveness of the fertilizer components. ### Q: How is granule size controlled? **A**: Granule size is influenced by drum speed, inclination, binder addition, and feed characteristics. The achievable range is typically 1 to 4 mm, with a granulation rate of at least 90% under optimal conditions. Adjustments are made via process parameters. ### Q: What standards apply to this equipment? **A**: Material standards such as GB/T 700 for carbon steel and GB/T 1220 for stainless steel are listed as references. The IP rating (IP54–IP65) follows IEC 60529. These are procurement references; verify compliance with the manufacturer for your specific model. ## 6. Manufacturing Compliance - 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