What are the reasons for choosing roller granulator?
More and more enterprises will choose to use roller granulator, which is produced by non drying normal temperature process and once forming. The equipment has less investment, quick effect and good economic benefits. The complete equipment has compact flow layout, scientific and reasonable layout, advanced technology, energy saving and consumption reduction, no waste discharge, stable operation and reliable maintenance.
Advantages of roller granulator:
1) Energy saving and consumption reduction, extrusion granulation is the granulation of materials at room temperature. Compared with other methods, drying measures such as fuel oil and gas are not required.
2) The production method of compound fertilizer commonly used in domestic is steam granulation without adding adhesive to roller fertilizer granulator machine. Water vapor plays an adhesive role in the process of making after condensation and crystallization of materials. However, water inside and surface of particles must be expelled out during drying process. If not, fertilizer is easy to bond and agglomerate in storage. Dry granulation does not require additional additives, Only the intermolecular force of the material itself is needed to simplify the process and reduce the energy consumption.
3) The investment in roller extruder is low. Because of the elimination of drying process, and low return ratio (accounting for about 15% of the total feed volume of extruder), the process flow is simple and the investment is low.
4) The raw material composition of roller granulator is flexible extrusion granulation production raw material route is more extensive, at present, there are more than 20 kinds of materials successfully used for extrusion granulation: ammonium nitrate, urea, ammonium chloride, calcium nitrate, potassium chloride, potassium sulfate, etc. in addition, the granulator machine for fertilizer can flexibly realize the product formula replacement in a very short time, and a set of devices can produce more than 30 kinds of formula products.
5) The green environment protection of roller extruder has no three waste discharge, and the capacity of extrusion granulation consumption is only electric power, and environmental protection is free of three wastes.
The principle of roller granulation: dry materials are agglomerated into dense and hard bulk (cake material) under pressure, which is called extrusion process; cake material is crushed and sieved to become granular material, which is called granulation process.
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