A Comprehensive Analysis of Powder + Granular Organic Fertilizer Production Line

The powder + granular organic fertilizer production line is an integrated solution designed specifically for the diversified production needs of organic fertilizer enterprises. Through its core design of "shared raw materials, differentiated processes, and universal equipment," it simultaneously achieves large-scale production of both powdered and granular organic fertilizers. One set of equipment meets different application scenarios (powder is suitable for fertigation and drip irrigation; granules are suitable for strip application and broadcasting), significantly improving capacity utilization and market adaptability, and is suitable for green agriculture scenarios such as ecological planting and facility agriculture. Production Line Configuration and Core Details I. Raw Material Pretreatment and Sharing Unit: Laying the Foundation for Dual Products (I) Raw Material Storage and Fermentation Pretreatment Raw Material Warehouse and Fermentation System: Equipped with 3 large-capacity 100m³ raw material warehouses to store organic raw materials such as livestock and poultry manure, straw, and mushroom residue; equipped with a 500m³ windrow-type fermentation turner (or trough-type turner) to ferment and decompose the raw materials (decomposition degree ≥85%), removing odors and pathogens. The fermentation cycle is 7-15 days. After fermentation, the moisture content of the raw materials is controlled at 35%-45%, laying the foundation for subsequent processing. Crushing and Impurity Removal: The fermented raw materials are conveyed to a 90-type vertical crusher via a 6-meter belt conveyor, crushed to ≤3mm (granular fertilizer raw materials) or ≤1mm (powdered fertilizer raw materials). During the crushing process, impurities such as stones and plastics are removed by an impurity removal device. The crusher is equipped with a pulse dust collector, achieving a dust collection efficiency of 99% and a material utilization rate of 98%. (II) Precise Batching and Mixing Multi-Group Batching System: Equipped with a 4-compartment batching machine, storing fermented organic fertilizer, straw charcoal, trace elements, and functional microbial agents respectively. A variable frequency screw batching scale is used to precisely control the proportions (functional microbial agent addition amount 0.1%-0.5%), with a batching error ≤±1%. When producing powdered fertilizer, soluble additives such as humic acid and amino acids are added to improve the fertilizer's water solubility; when producing granular fertilizer, 3%-5% binder (such as bentonite or starch) is added to ensure granulation effect. Twin-shaft mixer: A 60-type twin-shaft mixer is used to thoroughly mix the multi-component raw materials, with a mixing uniformity error ≤2%. The mixer is equipped with a spray humidification/drying device to adjust the raw material moisture content according to the product type (powdered fertilizer: 20%-25%; granular fertilizer: 30%-35%).

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