Pros and cons of high cost performance drum granulator for compound fertilizer

2020-08-03

Advantages of rotary drum granulator

1. The inner wall of drum can be lined with several pieces of rubber or polypropylene board, and there are air holes on the corresponding position of the cylinder. When the lining moves from the bottom to the top with the cylinder at the same time, the lining sags due to the self weight, so that the materials attached to the lining fall down due to gravity, which plays the role of automatic cleaning and caking.

2. When necessary, ammonia can be injected into the material layer of the drum granulator to make the material react.

3. In the granulation process of organic fertilizer production line, steam can be sent to the material layer in the drum to increase the temperature of granulation material, improve the salt solubility of granulation material, and achieve high liquid volume under low moisture content to meet the liquid phase quantity required for granulation, and reduce the evaporation water amount in the drying process.

4. During the operation of drum granulating machine, the operator can observe the granulation of materials at any time, so as to take timely measures as required to ensure the normal operation of the fertilizer production line.

Disadvantages of rotary drum granulator

The drum granulator is not like the disc granulator machine, which can classify the particles during operation. The relative pelletizing rate in the granulator is low. The granulating rate is generally only 40%~60%, which is lower than the disc granulator. Granulation rate. The drum pelletizer has a large production capacity, and the amount of returned material is slightly higher. The amount of returned material on the production line directly affects the output and quality. The finished product has fewer particles, more flour, and a large amount of returned materials, which directly affects the output.
rotary drum granulator

However, we can control the amount of return material in the whole fertilizer production line to make it reach a reasonable range. There are many large particles returned, which directly affects the smoothness and roundness of the product. According to experience, the amount of returned material is about 30%, which can effectively control the formation of large particles.
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