Steel structure enables efficient granulation

A dedicated extrusion granulation production line has been successfully put into operation in Colombia, enabling high-efficiency granulation through steel structures! In May 2025, Zhengzhou Huaqiang Heavy Industry Technology Co., Ltd. completed the installation and commissioning of a steel-structured extrusion granulation production line tailored for a Colombian client, officially entering the stage of large-scale production. This production line, with its steel structure plant layout as its core adaptation, integrates the entire chain of processes including mixing, lifting, feeding, granulation, screening, and packaging. With its robust configuration of two 3.0-type extrusion granulators, compact and efficient space utilization, and stable and reliable operation, it has become another benchmark project for Chinese granulation equipment in the South American market, providing local fertilizer producers with a highly adaptable and cost-effective mass production solution. Production Line Configuration and Core Equipment Analysis The entire steel-structured extrusion granulation production line is built around a closed-loop logic of "precise pretreatment - efficient granulation - quality control - finished product output." Equipment selection is closely matched to the load-bearing capacity and spatial layout of the steel-structured plant, with each unit seamlessly integrated. This ensures production efficiency while maximizing plant space utilization, fully meeting the large-scale production needs of Columbia's clients. Raw Material Pretreatment and Conveying Unit: Laying a Solid Foundation for Uniform Granulation Efficient Mixing Process: The production line uses a 2000-type disc mixer as the core of raw material pretreatment. This equipment features a large-diameter disc design with a mixing diameter of 2.0 meters, providing ample volume for batch mixing of multi-component raw materials. The mixing blades adopt a spiral layout, coupled with a variable frequency speed control system (speed range 10-25 r/min), which can flexibly adjust the mixing intensity according to the raw material moisture and ratio, ensuring sufficient convection and shearing of nitrogen, phosphorus, and potassium main raw materials and trace elements. The mixing uniformity error is ≤2%, providing a uniform raw material foundation for subsequent granulation. The equipment features wear-resistant lining plates to extend its service life and is equipped with an automatic unloading device to ensure continuous production. Stable Lifting and Feeding: The mixed raw materials are vertically conveyed to subsequent stages via a 315-type bucket elevator (10 meters). This elevator is optimized for the vertical space of steel structure plants, with a small footprint and high load-bearing capacity. It uses a plate chain drive structure, ensuring smooth and noiseless operation, with a conveying efficiency of 6 tons/hour. Its excellent sealing effectively prevents the raw materials from becoming damp, contaminated, or generating dust during lifting. The lifted raw materials then enter a 2000-type disc feeder. The feeder uses frequency conversion control and automatic material level monitoring technology to precisely regulate the feed rate, ensuring uniform feeding to the two extrusion granulators. This avoids fluctuations in granulation quality or equipment overload caused by uneven feeding, achieving precise matching between raw material supply and granulation rhythm.

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