Innovative Development Directions for Double Roller Press Granulator Production Technology

 The innovation of double roller press granualtor production technology revolves around multi-material adaptability, improved product quality, and intelligent, green, and efficient core principles.  Based on dry granulation, it aims for a comprehensive process upgrade to meet the production needs of organic fertilizers, compound fertilizers, and functional fertilizers, aligning with intelligent manufacturing and green, low-carbon industry trends. The core innovation directions are as follows:

1. Raw Material Adaptability Innovation: Breaking through traditional raw material limitations, developing binder-free dry granulation processes; innovating low-temperature controlled extrusion processes to solve the moisture absorption and melting problems of high-nitrogen and high-potassium compound fertilizers; adopting low-pressure gentle extrusion and layered extrusion processes to meet the production of special fertilizers such as bio-organic fertilizers and slow/controlled-release fertilizers, while also adapting to the granulation needs of agricultural solid waste resource utilization.

2. Forming Process Optimization: Upgrading constant-pressure, constant-gap dynamic hydraulic closed-loop extrusion to ensure stable pressure and improve particle strength and uniformity; optimizing the roller surface's gradually changing cavity design to achieve smooth demolding and reduce crushing rate; innovating the return material classification and circulation process, controlling the return material ratio at 10%-15%, reducing raw material loss, and improving production efficiency.

4. Green and Low-Carbon Innovation: Adopting variable-frequency energy-saving drives and streamlined extrusion channels to reduce energy consumption per ton of fertilizer; creating a fully enclosed negative-pressure dust collection process to achieve dust recovery and recycling; recovering extrusion waste heat for raw material conditioning, promoting resource recycling, and achieving zero wastewater and low pollution during the granulation process, meeting dual-carbon requirements.

5. Collaborative Innovation in fertilizer production machine: Developing modular roller systems to shorten changeover time; upgrading the entire line linkage process to achieve real-time matching of extrusion-screening-rounding parameters, improving the overall product qualification rate; optimizing the wear-resistant coating process for vulnerable parts to extend equipment service life and reduce operation and maintenance costs.

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