Fertilizer roller press granualtor produciton lines (especially dry roller extrusion) have become the mainstream choice for organic fertilizer and compound fertilizer production because of their significant advantages in cost, environmental protection, and finished product quality.

I. Process and Cost Advantages

• Room temperature molding, extremely low energy consumption: The core advantage lies in the elimination of fuel heating. Utilizing mechanical high-pressure direct extrusion molding significantly reduces heat source costs compared to disc granulation or drum granulation, making it particularly suitable for small and medium-sized fertilizer plants.

• Strong adaptability and flexible formulation: It has a wide range of requirements for raw material moisture content (typically 20%-40%), and can process various organic wastes such as livestock and poultry manure, straw, sludge, and mushroom residue. The formulation can be flexibly adjusted, facilitating the production of organic fertilizer, bio-fertilizer, or organic-inorganic compound fertilizer.

• Low investment threshold and small footprint: The production line has a compact structure (crushing-mixing-extrusion-screening), requiring relatively low investment in fertilizer production machine and simple subsequent maintenance, making it suitable for entrepreneurs with limited funds. II. Finished Product Quality and Environmental Benefits

• Excellent Granular Physical Properties: The produced granules are irregularly shaped spheres with high hardness and are not easily pulverized, effectively reducing nutrient loss during transportation and storage.

• Fertilizer Retention and Slow-Release Effect: The extrusion process does not damage organic matter and microbial communities (especially suitable for bio-organic fertilizers). The high granule density results in a moderate dissolution rate after application to the soil, providing a certain degree of slow release and preventing root burn.

• Complete Pollution Solution: Transforming powdery waste into commercially available granules completely solves the dust pollution problem associated with powdered fertilizers, improves the operating environment, and facilitates mechanized fertilization.