Steam Drum Granulation | NPK Fertilizer Production Line

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NPK Fertilizer Production Line, Steam Drum Granulation (50,000–600,000 t/y)

Complete compound fertilizer production system using steam-assisted drum granulation process for uniform fertilizer granule formation

This NPK fertilizer production line is designed for manufacturing granular compound fertilizers and specialty fertilizers. It integrates multiple processing stages into a stable and well-coordinated system, ensuring consistent granule quality and reliable operation. The complete line covers raw material batching, granulation, drying, cooling, screening, coating, packaging, and exhaust gas treatment. Steam-assisted rotary drum granulation is used to ensure stable granule formation and consistent product quality.

Production capacity: 5–600,000 t/y
Standard: Complies with GB/T 15063-2020
Granule size: 2.0–4.5 mm or 3.0–5.6 mm

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Process Flow Diagram

Features

Patented technologies for stable and efficient operation
1. The granulator, dryer, and cyclone dust collector adopt anti-stick internal designs, reducing material buildup, downtime, and maintenance frequency.
2. Uniform material distribution inside the cooler ensures balanced airflow and consistent cooling of fertilizer granules.
3. The screening system uses anti-blocking screen structures to improve screening efficiency and ensure consistent granule size.
4. The coating unit is equipped with a patented atomizing spray nozzle, effectively preventing caking and improving the final product appearance.
High-level automation control
1. The production line is operated through a DCS distributed control system, enabling fully automated line operation.
2. Key parameters such as raw material ratio, granulation temperature, drying moisture, and cooling airflow are automatically monitored and controlled, ensuring stable product quality while reducing manual intervention.
Energy-efficient and environmentally compliant design
1. A three-stage exhaust gas treatment system is configured to ensure emissions meet environmental regulations.
2. Optimized drying and cooling processes help reduce overall energy consumption and lower operating costs.

Main Equipment

Finished Fertilizer Products

35+ Years of Expertise in Turnkey Fertilizer Production Solutions

Delandi (Nantong) Machinery is dedicated to the development of the fertilizer industry, focusing on process design, production equipment manufacturing, and production performance improvement for fertilizer manufacturing projects. We bring together a team of experienced professionals with deep technical knowledge and long-term industry involvement.