The organic fertilizer production line achieves efficient mass production through standardized processes. These processes center around five key steps: raw material pretreatment, fermentation, granulation, drying and cooling, and packaging. Each step closely coordinates to ensure the finished product meets quality standards.
The first step is raw material pretreatment. Raw materials such as livestock and poultry manure and straw enter the workshop via conveyor belts. A vibration screener machine removes impurities such as stones and plastic. The straw is then crushed into 5-10 cm pieces by a crusher. The material then enters a mixer and humidity conditioner, where an automatic spray system precisely adjusts the moisture content to 50%-60%. Conditioners are also added to balance the properties. The entire process is monitored in real time by a central control system, laying the foundation for subsequent steps.
The second step is fermentation. The pretreated raw materials are transported via a scraper conveyor to the fermentation chamber, where they are mixed according to the desired ratio and a specific bacterial strain is added in a fixed amount. The fermentation silo relies on a temperature control system to maintain an appropriate temperature. The windrow production line is equipped with a compost turner for regular operation. The tank production line shortens the cycle time by creating a closed environment. Temperature and oxygen concentration are continuously monitored to ensure that microorganisms efficiently decompose organic matter. Fermentation is completed when the material is dark brown and odorless.
The third step is granulation. After fermentation, the material is first screened through a drum to remove residual impurities. Qualified material is then fed into a granulator. Depending on the needs, an rotary drum granulator or a disc granulator can be used to process the material into uniform granules. The granule size can be adjusted through equipment parameters to ensure a regular shape and meet the requirements of different application scenarios.
The fourth step is drying and cooling. After granulation, the wet granules enter the dryer, where hot air circulation reduces the moisture content to below 15% to prevent mold and deterioration during storage. The granules, still hot after drying, are then fed into a cooler where cold air is used to quickly cool them to room temperature, increasing their hardness and preventing them from breaking during transportation.
The fifth step is packaging. After cooling, the pellets are transported via a conveyor belt to the automated packaging line, where a quantitative weighing device precisely controls the weight of each bag. The bags are then sealed and labeled. Moisture-resistant packaging ensures the fertilizer's storage stability. Finally, after passing quality inspection, the packaged organic fertilizer is stored for sale, creating a highly efficient closed-loop production line.
