In recent years, dry granulation technology has gained increasing attention in the compound fertilizer industry, especially in NPK fertilizer manufacturing. Compared with traditional wet granulation, dry granulation offers a simpler process, lower operating cost, and greater flexibility for fertilizer producers.
This article explains why dry granulation is widely used in compound fertilizer production and introduces the key equipment behind this technology.
What Is Dry Granulation in Compound Fertilizer Manufacturing?
Dry granulation, also known as roller compaction granulation, is a process that forms fertilizer granules without adding water or liquid binders. Powdered raw materials are compacted under high pressure and then crushed and screened into uniform fertilizer particles.
This dry granulation process for compound fertilizer is especially suitable for moisture-sensitive materials and formulas with high nitrogen content.
Key Reasons Dry Granulation Is Widely Used
One major advantage of compound fertilizer dry granulation technology is its low moisture requirement. Since no drying stage is needed, producers can significantly reduce energy consumption and production time.
Another reason is process simplicity. A typical dry granulation fertilizer line consists of batching, mixing, roller compactor granulation, screening, and packaging. This compact layout makes it ideal for small to medium-scale fertilizer plants.
Dry granulation also offers excellent formula flexibility. Producers can easily adjust NPK ratios and add functional ingredients without worrying about moisture balance, making it suitable for customized compound fertilizers. Click here to get more!
Roller Compactor Granulator: Core Equipment of Dry Granulation
The heart of dry granulation technology is the roller compactor granulator, also known as a double roller press granulator. This machine uses two counter-rotating rollers to compress fertilizer powder into dense flakes or sheets.
After compaction, the material is crushed and screened to obtain uniform granules. Modern roller compactor fertilizer granulation machines are designed with adjustable pressure, wear-resistant roller skins, and stable transmission systems to ensure consistent granule quality.
This type of dry granulation equipment for compound fertilizer is widely used in NPK fertilizer plants, BB fertilizer lines, and specialty fertilizer production.
Comparing Dry Granulation with Wet Granulation
Compared with wet granulation technology, dry granulation requires less infrastructure, no drying system, and lower labor input. While wet granulation is suitable for organic-rich formulas, dry granulation is often preferred for chemical and compound fertilizers due to its efficiency and cost control. Learn more!
Conclusion
The popularity of dry granulation technology in compound fertilizer production is driven by its energy efficiency, flexible formulation, and simplified process. With the support of reliable roller compactor granulation equipment, fertilizer manufacturers can achieve stable output and scalable production.
As fertilizer markets continue to demand efficiency and customization, dry granulation remains a practical and proven solution for modern compound fertilizer plants. If you need a dry granulation machine, welcome to visit： https://www.fertilizerequipmentprice.com/roller-compactor-granulator-cost/