The particles produced by the double roller granulator
are spherical with high content of organic matter, which can realize the granulation of pure organic matter. With the characteristics that organic particles can be inlaid and grow up with each other under a certain force, the particles do not need to be added with binder during granulation, and the particles can be screened after granulation to reduce the energy consumption of drying.
Production characteristics of double roller granulator
- 1. Energy saving and consumption reduction. Extrusion fertilizer granulation machine is the granulation of materials at room temperature. Compared with other methods, it does not need fuel oil, gas and other drying measures.
- 2. There is no need to add additional adhesive. Steam granulation is the common production method of compound fertilizer. Water vapor condenses and crystallizes between the material molecules and acts as an adhesive in the manufacturing process. But in the drying process, the water inside and on the surface of the particles must be driven out, otherwise the fertilizer is easy to stick and agglomerate in the storage process. However, dry granulation does not need additional additives, and only uses the intermolecular force of the material itself, which simplifies the process and reduces energy consumption.
- 3. The investment is low, because the drying process is omitted, and the return ratio is low (accounting for about 15% of the total feed amount of the extruder), the process is simple and the investment is low.
- 4. The raw material composition is flexible, and the raw material route of extrusion granulation is wide. 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 device can produce more than 30 kinds of products.