Core Operational Requirements for NPK Blending Fertilizer Production Line

The core operational requirements of the NPK blending fertilizer production line revolve around precise batching, homogenization and contamination prevention, and safety and compliance, covering the entire production process and strictly adhering to the GB/T 21633-2020 standard. Specific requirements are as follows: 1. Pre-start Preparation: Confirm that the nitrogen, phosphorus, and potassium raw materials have uniform particle size (2-4mm), are free of agglomeration and mold, and that the compartments are properly positioned and at reasonable levels; verify the production formula, conduct a no-load test run, turn on the dust removal system, and ensure operators wear appropriate personal protective equipment. 2. Normal Production Operation: Fully automated batching is used. After coarse feeding reaches 80%-90%, fine feeding is performed to prevent material spillage. The next compartment is switched only after the batching and discharge of materials from each compartment is complete. For granular fertilizer production, particle size control is required. Unqualified materials after screening should be returned promptly. Powdered fertilizer goes directly into packaging. During packaging, precise metering and secure sealing are essential. Information such as formula and net content should be clearly labeled. Equipment should be monitored in real time, and the uniformity of the finished product should be checked hourly. 3. Formula/Process Switching: Before changing the formula, thoroughly empty the silos, batching scales, and mixers of any residue. Rinse 1-2 times with new raw materials. Verify the new formula and conduct a small-batch trial before mass production. When switching between powder and granular fertilizer processes, clean the corresponding NPK blending machine, replace the screens, and ensure proper protection. 4. Faults and Shutdowns: Immediately stop equipment malfunctions and power outages for troubleshooting. If process deviations occur, promptly calibrate the equipment or adjust parameters. After troubleshooting, conduct a trial run until successful before resuming production. Clean equipment promptly, replace dust collector filter bags, and ensure proper lubrication and tightening. Seal remaining raw materials for moisture protection, and store finished products by batch and in designated areas. 5. Safety and Environmental Protection: Operators must be certified and strictly prohibited from touching moving parts or operating with faulty components. The dust collection system must be kept running throughout the entire process, and dust must be centrally processed. Maintain accurate records of production, equipment, and testing data.

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