Brief introduction of operation principle of roller press granulator
1. Energy saving and consumption reduction of roller press granulator. Extrusion granulation is the granulation of materials at room temperature. Compared with other methods, it does not need fuel oil, gas and other drying measures;
2. The composition of raw materials is flexible. At present, there are more than 20 kinds of materials successfully used in extrusion granulation: ammonium nitrate, urea, ammonium chloride, calcium nitrate, potassium chloride, potassium sulfate, etc. In addition, the extrusion granulation process can flexibly change the product formula in a very short time. A set of organic fertilizer machine can produce more than 30 kinds of products;
3. The investment of roller granulator production line is low, because the drying process is omitted and the return material ratio is low (accounting for about 15% of the total feed amount of extruder), the process flow is simple and the investment is low;
4. No need to add adhesive. The commonly used compound fertilizer production method is steam granulation. After the steam condenses and crystallizes between the material molecules, it acts as a binder in the manufacturing process. However, the water inside and on the surface of the particles must be driven out during the drying process, otherwise the fertilizer will easily stick and agglomerate during storage. However, dry granulation does not require additional additives and only uses the intermolecular force of the material itself, which not only simplifies the process, but also reduces energy consumption.