Tag: disc granulator machine

organic fertilizer equipment

Factors Affecting the Production of Compound Fertilizers Using a Disc Granulator

by organic fertilizer production line

When producing compound fertilizers using a disc granulator, many factors influence granulation, such as disc diameter, disc speed, disc inclination, nozzle aperture, and moisture content. Generally speaking, disc inclination has a greater impact on the granulation rate, while disc speed has a greater influence on the compressive strength of the granules.

The moisture content of disc granulation significantly influences both the granulation rate and the compressive strength of the granules. When the moisture content of the material is controlled within the range of 16%-20%, the granulation rate and compressive strength of the granules are optimal. Too little moisture results in a low granulation rate; too much moisture causes the material to clump and stick together, resulting in a reduced granulation rate. When the moisture content is too low, the compressive strength of the granules increases with increasing moisture content, which is beneficial for improving the compressive strength of the granules. However, when the moisture content is too high, the excess moisture disrupts the interactions between fertilizer molecules, causing the dried granules to crack and resulting in a decrease in compressive strength. Before using a disc granulator, the optimal moisture content, disc speed, and disc inclination angle should be tested to ensure high fertilizer production line efficiency and high pellet quality. Furthermore, the finer the raw material powder, the better the granulation effect.

Disc granulators are widely used in organic fertilizer production lines and compound fertilizer production lines. Fertilizer production using disc granulators offers low investment, high output, simple process, and intuitive operation, resulting in excellent economic and social benefits.

organic fertilizer equipment

Application of Disc Granulators in NPK Fertilizer Production Lines

by organic fertilizer production line

In the NPK fertilizer production line, disc granulators are a widely used and highly favored granulation equipment.

The disc granulator‘s structure is relatively simple yet unique. It primarily consists of an inclined disc, a drive mechanism, and a spray system. The disc, the core of the granulation process, is typically constructed of high-strength steel to ensure it can withstand the various forces involved in the granulation process. The drive mechanism provides stable rotational power to the disc, ensuring it rotates at an appropriate speed.

The disc’s operating principle is based on the movement and interaction of the materials within the rotating disc. When the mixed NPK fertilizer raw materials are fed into the rotating disc, the disc’s tilt and rotational motion cause the materials to roll upward along the disc’s inner wall due to a combination of centrifugal force, friction, and gravity. During this rolling process, a spray system applies a binder to the material. The binder acts like “glue,” gradually binding the loose raw material particles together and causing them to aggregate and grow. Over time, these agglomerated particles continuously roll and collide within the disc, further compacting and shaping them, ultimately forming relatively uniformly sized round granules that roll off the disc’s edge, completing the granulation process.

Disc granulators offer numerous advantages. First, they produce fertilizer granules with high roundness, excellent appearance, and strong market competitiveness. Second, they are relatively simple to operate and easy to master, requiring minimal operator skill. Furthermore, disc granulators are highly adaptable and can produce fertilizer granules of varying sizes to meet diverse market demands by adjusting parameters such as disc speed, tilt angle, and binder spraying rate to meet specific production needs.

However, disc granulators also have limitations. For example, compared to some large-scale granulation equipment, their production efficiency may be relatively low, making them less suitable for large-scale industrial production. Furthermore, when processing high-viscosity raw materials, material may stick to the disc, affecting granulation efficiency and equipment operation. Nevertheless, due to their unique advantages, disc granulators still play an important role in the production of NPK compound fertilizers by small and medium-sized enterprises, as well as in production scenarios where the appearance of fertilizer granules is a high priority.

organic fertilizer equipment

How to adjust the conveying capacity of the belt conveyor

by organic fertilizer production line

Adjusting the conveying capacity of the belt conveyor can be achieved through the following methods:

1. Adjust the motor speed: Adjusting the motor speed is one of the common methods to change the conveying capacity of the belt conveyor. The frequency converter can accurately control the motor speed, thereby adjusting the conveying speed.

2. Adjust the drive roller diameter: Replacing the drive roller can significantly change the conveying speed, but the cost is high, the replacement process is more complicated, and professional personnel are required to operate.

3. Adjust the belt tension: By changing the tension of the belt, the friction between the belt and the drive roller is affected, thereby adjusting the conveying speed. Appropriately increasing the tension can increase the friction and speed up the conveying speed.

4. Adjust the feed rate: By adjusting the opening size of the feed hopper or the feed speed, the amount of material entering the conveyor belt can be controlled, thereby adjusting the conveying capacity. Use an adjustable roller assembly The rollers in the adjustable roller assembly can be set at an angle, and the material gathers in the middle of the conveyor belt to prevent spillage.

5. Automatic control: Use the coal inspection modules set at intervals to determine the amount of coal transported on the belt conveyor, so as to accurately control the speed of the previous belt conveyor. At the same time, use the speed sensor to collect whether the speed of the previous belt conveyor after speed regulation is accurately adjusted. In abnormal cases, use the anti-slip protection device to terminate the operation of the belt conveyor, realize the function of controlling the speed of the belt conveyor according to the amount of coal, and reasonably consume electricity and material resources.

Through the above methods, the conveying capacity of the belt conveyor can be effectively adjusted to meet the production needs of different organic fertilizer production lines.

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