My Blog

Building an npk production line requires a compound fertilizer granulator. There are many compound fertilizer processing and granulation equipment. Some companies do not know how to choose a suitable compound fertilizer granulator. What is the compound fertilizer granulation equipment introduced today? There are three main types of compound fertilizer granulator: drum granulator, disc granulator and double-roller granulator. What is the difference between these compound fertilizer granulators? What are the advantages and disadvantages of each method?

The disc granulator mainly uses the rolling of the disc surface and the granulation of the granules themselves, and is used together with the upper mixer to achieve a high spheroidization rate. The investment cost of granulator equipment is low, and the production capacity is strong, but the dust of open-air granulation is relatively large.

The barrel of the drum granulator equipment is lined with a special rubber plate or an acid-resistant stainless steel lining to realize automatic scar removal and tumor removal, eliminating the traditional scraper device. A drum granulator is a forming machine that shapes materials into specific shapes.

compound fertilizer production line for sale

The main working method is granule wet granulation. With a certain amount of water or steam, the basic fertilizer can fully react after being humidified in the tank. Under certain liquid phase conditions, with the help of the rotating motion of the cylinder, the extrusion force between the material particles condenses into balls. The investment cost of chemical fertilizer equipment is high, the production capacity is strong, and the dust of drum granulation is relatively small.

The double-roll granulator adopts non-drying normal temperature process to produce, one-time molding. The equipment has low investment, quick effect and good economic benefit. The whole set of equipment is compact in layout, scientific and reasonable, and advanced in technology. Energy saving and consumption reduction, no waste discharge, stable operation, reliable operation and convenient maintenance. Wide adaptability of raw materials, suitable for granulation of raw materials such as compound fertilizer, medicine, chemical industry, feed, etc., and the product granulation rate is high. Various concentrations and types of compound fertilizers (including organic fertilizers, inorganic fertilizers, biological fertilizers, magnetic fertilizers, etc.) can be produced.

More detailed info on machines for compound fertilizer production, welcome go to https://compoundfertilizermachine.com/

The third process is the granulation process of granular NPK fertilizer production line. In this process, the rotary drum granulator is an important equipment with a production capacity of 5-20 T / h.

Drum granulator is a kind of molding machine which can make material into specific shape. It is one of the key equipment of NPK compound fertilizer production line, suitable for cold and hot granulation and batch production of high and low concentration compound fertilizer. The main working mode is wet granulation.

Pelletizing process fertilizer production line

The rotary drum plays an important role in the granulation process of the world-class 50 million T / a NPK compound fertilizer production line.

More detailed info, go to https://fertilizergranulatormanufacturer.com/npk-compound-fertilizer-granulation-equipment/

The reason of wear of the shell of double roller granulator
Zhengzhou SX professional technicians will analyze the reasons for the wear of the roller shell on the compound fertilizer production line on the roller granulator

1. raw material moisture, pH

The roller sleeve is made of stainless steel. It reacts strongly with the pH value of the substance. Improper moisture and pH of the material will cause acid-base corrosion on the roller surface and damage the roller surface.

2. material factors

Roller extruder mainly deals with dry powder materials. Due to the different hardness of the material, uneven forces will be produced during extrusion and ball formation, which will increase the wear of roller skin. From the perspective of material factors, the other factor is the uniformity of the raw material particle size. Different sizes of raw materials also lead to uneven force and wear of roller sleeve.

3. feed uniformity coefficient

The center of the axis of the parallel bar of the extruder is parallel to the surface of the roll skin. If the feed is seriously uneven, one end feeds more and the other end is fed less, it will cause uneven force at both ends of the roller, increase the friction between the roller and the material, and cause the roller to wear.

Measures to reduce the wear of the roller shell in the compound fertilizer production line of the roller extruder:
In the process of pelletizing of the roller extrusion granulator, the roller skin is inevitably worn.

However, if used properly, it can effectively reduce the wear of the roller skin, thus extending the service life of the roller skin. According to the above factors, the following aspects can reduce the wear of the granulator.

1. for materials with high moisture content and high pH value, inspection and adjustment shall be carried out.

2. roller material, it is very necessary to select the cylinder cover with good material, wear resistance, torsion resistance and corrosion resistance.

3. in order to supply working materials, the uniformity of feed must be controlled to avoid wear caused by uneven axial force of roller.
Effective maintenance is an important means to reduce wear.

In conclusion, the damage factors should be avoided in the daily operation of the compound fertilizer production line from to the roller extruder. Therefore, manual and conventional use can reduce the wear of the pelletizing roller of extruder, prolong the service life and reduce unnecessary waste.