The complete set of compound fertilizer equipment has low investment, fast effectiveness, and good economic benefits. The complete equipment process layout is compact, scientific and reasonable, and technologically advanced. Energy saving and consumption reduction, no discharge of three wastes, stable operation, reliable operation and convenient maintenance. Wide adaptability of raw materials, suitable for granulation of various raw materials such as compound fertilizers, pharmaceuticals, chemicals, feed, etc., with high product granulation rate. It can produce compound fertilizers of various concentrations and types (including Manure, inorganic fertilizer, biological fertilizer, magnetized fertilizer, etc.). Especially for the granulation of rare earth and ammonium bicarbonate series compound fertilizers, it fills the gap in China.
The compound fertilizer production line equipment consists of the following parts of equipment: mixing equipment, granulation equipment, drying equipment, cooling equipment, screening equipment, induced air and dust removal equipment, conveying equipment, return material processing equipment, as well as raw material processing equipment, anti agglomeration wrapping equipment, and automatic metering and packaging equipment that can be added according to user needs.
1. Ingredients of raw materials: (mainly determined based on local market demand and local soil testing results);
2. Mixing and stirring: Mix the prepared raw materials evenly to improve the overall uniform fertilizer efficiency content of the fertilizer particles, and use a horizontal mixer or a disc mixer for mixing and stirring;
3. Agglomeration and crushing: Crush the mixed and evenly stirred raw materials into large blocks for subsequent granulation processing, mainly using chain crushers, etc;
4. Material granulation: The evenly stirred and crushed materials are fed into the granulation machine through a belt conveyor for granulation (can be done with a rotary drum granulation machine, or with a pair of roller extrusion granulation machines, disc granulation machines, etc.). This step is an essential and important part of the compound fertilizer production process;
5. Screening: Preliminary screening of semi-finished particles, returning unqualified particles to the mixing and stirring process for further processing, usually using a drum screening machine;
6. Particle drying: The particles made by the granulator and screened are fed into the dryer to dry the moisture contained in the particles, increase their strength, and facilitate storage. Generally, a rotary drum dryer is used;
7. Particle cooling: The dried fertilizer particles have a high temperature and are prone to clumping. After cooling, they are easy to pack, store, and transport, and are cooled using a cooling machine;
8. Particle secondary classification: Classify the cooled particles, crush the unqualified particles into new particles, and screen out the qualified products. A secondary drum screening machine can be used for screening;
9. Finished product particle coating: Coating qualified products to increase the brightness and roundness of the particles, making the appearance more beautiful. Generally, using a coating machine for coating;
10. Quantitative packaging of finished particles: The coated particles, also known as finished particles, are temporarily stored in the silo through a belt conveyor, and then connected to electronic quantitative packaging, sewing machines, and other automatic quantitative packaging and sealing bags. They are stored in a ventilated place, achieving full automation.