Customized BB Fertilizer Coating Production Line: Coating Enables Efficient Fertilization!

Precision Batching Unit: Laying a Solid Foundation for Nutrient Balance The production line is centered around a 5-compartment automated batching unit. Each of the 5 independent compartments stores nitrogen, phosphorus, and potassium as primary raw materials, as well as two different types of trace element additives. The compartments are designed with partitioned isolation to effectively prevent cross-contamination and ensure formula purity. A high-precision metering screw conveyor is installed at the bottom of each batch of batches. Combined with a PLC intelligent control system, it automatically adjusts the feed rate of each raw material according to the preset formula, with a metering error of ≤0.5%. This ensures that the nutrient ratio of each batch of product is accurately met, adapting to the fertilization needs of different crops and different growth stages. After batching, the mixed raw materials are smoothly transferred to a 9-meter bucket elevator via a 9-meter belt conveyor. This elevator uses a plate chain drive design, has a strong load-bearing capacity, and operates stably. It can vertically transport materials to the subsequent coating stage, with a conveying efficiency of 8 tons/hour. The equipment also has excellent sealing, effectively reducing dust and material loss during the transport process. Core Coating Unit: Achieving Efficient and Uniform Coating Coating Solution Preparation System: Equipped with a dedicated coating solution melting and stirring tank. This equipment adopts a double-jacketed heating design, which can precisely control the temperature inside the tank (50-80℃), ensuring that the coating agent (such as anti-caking agent, slow-release agent) melts rapidly and mixes uniformly. The stirring speed can be adjusted by a frequency converter (20-40r/min) to avoid sedimentation and stratification of the coating solution, ensuring consistent coating effect. The tank is equipped with liquid level monitoring and automatic replenishment functions to maintain the coating solution level in real time and ensure continuous operation of the production line. Core Coating Equipment: Employs a Φ1.8×7.0 meter drum-type coating machine. This equipment is the key equipment for BB fertilizer coating treatment. The inner wall of the drum is lined with special wear-resistant plates, combined with a spiral layout of lifting plates, which can drive the material to fully tumble and scatter within the drum, ensuring that each fertilizer particle is evenly contacted with the coating solution. The coating machine is equipped with an atomizing spraying system that evenly sprays the molten coating liquid onto the material surface in the form of micron-sized droplets. The spraying amount can be precisely controlled according to the material flow rate, ensuring uniform coating thickness (0.05-0.1mm) and a coating rate of over 98%. During equipment operation, the drum speed and material residence time can be flexibly adjusted to adapt to BB fertilizer raw materials of different particle sizes and characteristics, achieving customized coating effects.

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