The equipment required for an annual production line of 30000 to 50000 tons of mixed fertilizers mainly includes raw material storage equipment, batching equipment, mixing equipment, packaging equipment, and control systems.

Raw material storage equipment: including raw material silos, storage tanks, etc., used to store various raw materials required for production, such as nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer, trace elements, etc.

Ingredients equipment: According to the production formula, various raw materials are batched in a certain proportion. Common batching equipment includes electronic scales, automatic batching machines, etc.

Mixing equipment: Mix the prepared raw materials to ensure uniform distribution of various components. Common mixing equipment includes horizontal mixers, vertical mixers, etc.

Packaging equipment: Package the mixed fertilizer for storage and transportation. Common packaging equipment includes automatic packaging machines, sealing machines, etc.

Control system: Automatically control the entire production line, including the transportation, batching, mixing, packaging, and other processes of raw materials. Control systems can improve production efficiency, reduce labor costs, and ensure product quality.

In addition, according to production needs, some auxiliary equipment can also be equipped, such as conveyor belts, dust collectors, iron removers, etc., to ensure the smooth operation of the fertilizer production line and stable product quality.

It should be noted that the specific equipment configuration needs to be selected and adjusted according to the actual situation of the production line to ensure the stability and economy of the fertilizer production line.