Process flow of extrusion granulation organic fertilizer production line
Automatic batching system → fertilizer mixer machine → roller granulation unit → ball shaping machine → screening machine → packaging machine.
1. The ball type pure organic fertilizer, organic-inorganic fertilizer and bio organic fertilizer can be produced by extrusion granulation process. The production process is short, the operation cost is low, the organic fertilizer particles are uniform and round, the surface is smooth, the compressive strength is high, the fluidity is good, the survival rate of microbial bacteria is more than 90%, the granulation rate is 85-95%, and the particle diameter is 3.5-4 mm.
2. The new technology of extrusion granulation and polishing has strong adaptability to raw materials, which can completely solve the key technical problems of traditional granulation processes such as disc or drum
a. The organic materials after fermentation can be directly used for granulation without pre drying and crushing. Traditional granulation processes such as disc or drum have higher requirements on the fineness of raw materials, that is, the fineness of more than 80% of the materials should reach more than 80 mesh, so it needs to be crushed. Because the organic materials after fermentation have high moisture content, the granulator machine for fertilizer
needs to be dried to less than 13% before crushing to meet the crushing conditions, with large equipment investment and high operation cost.
b. The addition of organic materials can be increased to more than 95%. Traditional pelletizing process such as disc or drum uses more than 80 mesh organic materials with binder, and the maximum amount of organic raw materials is between 30-40%. Therefore, it is impossible to produce spherical organic fertilizer with high content or pure organic matter by traditional pelletizing process.