How much is the proper adjustment of the inclination of the organic fertilizer disc granulator?

Disc granulator is one of the important equipment for organic fertilizer production, and its main working part is a rotating inclined disc. It is based on the principle of powder material agglomeration and granulation, so that the powder material with wet surface is continuously rolled or turned inside the disc granulator equipment, coupled with mechanical extrusion, prompting these powder materials to gradually form granules.

Several parameters that will affect the granulation effect during the production of the disc granulator are: the diameter of the disc, the height of the disc, the inclination angle and the rotation speed of the disc.

Generally speaking, the diameter of the disc is mainly determined by the output. Each manufacturer should choose a matching combination with other organic fertilizer equipment such as mixers or screw conveyors according to their own conditions, such as the annual production capacity. The annual production capacity of the disc granulator with a diameter of 2 meters can reach more than 10,000 tons, and the production capacity of the pelletized disc with a diameter of 2.2 meters can reach more than 15,000 tons per year. Therefore, the selection of the disc diameter should be based on the design annual production capacity. Think about it from an angle.

Once the diameter of the disc is determined, the height of the disc can basically be determined. Generally speaking, the larger the diameter, the higher the height of the disc. However, the height of the disc can affect the ball time of the fertilizer on the disc. The particles generated on the disc will be affected by the friction coefficient between the raw material and the disc surface. The difference produces a grading effect. Small particles stay close to the bottom of the disc, while larger particles are discharged beyond the edge. The higher the disc edge, the longer the ball formation time. If the disc height is too low, the ball formation time will be short, and the particles that go out will have a relatively small particle size. Therefore, on the one hand, the height of the tray can affect the size of the particles discharged from the pelletizing tray, and on the other hand, it can also affect the output. Because if the material stays in the pan for too long, the discharge speed of the product will be slower, the larger the particles of the product, the more particles that do not meet the standard, and the lower the rate of ball formation. Therefore, it is reasonable to choose a very high plate. important.

Used as fertilizer production equipment, the inclination angle of the disc of the disc granulator cannot be less than the natural angle of repose of the granulated powder 35°, otherwise the material will stick to the disc and rotate with the disc body, and the inclination angle increases, and the speed It can be improved to avoid the accumulation of materials in the lower part, and can not produce drop and roll up and down. However, the greater the angle of inclination, the faster the roll-down speed, and the smaller the spilled particles. The most suitable disc inclination angle is related to the diameter of the disc, that is, the disc inclination angle decreases as the diameter of the disc increases. This is because the final velocity of the particles moving along the disc surface increases with the increase in the diameter of the disc. , In order to avoid the impact and rupture of other particles when the particles undershoot, the inclination angle of the disc must be reduced.

Since the particles will gradually grow up as they roll down along the surface of the disc, the more the number of times the material rolls in the disc per unit time, the faster the particles will grow up, that is, the working efficiency of the granulator is proportional to the granulator’s Rotating speed. Because the basic powder fertilizer rises with the rotation of the disc with a constant slope, it rolls down under the action of gravity, and at the same time, it is thrown to the edge of the disc due to the centrifugal force. These powders collide and fuse with each other. And it is bonded together by the surface tension of the liquid phase, so the speed of the rotation speed will affect the bonding and pelletizing process of the powder-grain fertilizer on the one hand. Too fast, the powder fertilizer is too late to be formed, and it is thrown out of the disc. Too slow makes the powder pellets take too long, making the diameter of the particles overflowing the disc larger than the standard requirement; on the other hand, as the inclination angle of the disc increases If the rotating speed of the disc is too slow, the materials will accumulate in the lower part of the disc, and the drop and repeated rolling up and down will not occur, which will also affect the ball formation rate.

As the speed of the pelletizing disc increases, its centrifugal force increases, which will make the particles close to the edge of the disc, preventing the particles from rolling down, and a funnel-shaped vortex will appear on the disc surface. In order to maintain the effective use of the disk surface area, the inclination angle of the disk must be increased while increasing the speed. As the inclination angle of the disc increases, the end speed of the particles will increase accordingly, so the inclination angle of the disc should be maintained at a limit value to prevent damage to the rolling and granulation of the material. Therefore, the rotational speed of the disc is also a major influencing factor.

The several parameters of the pelletizing disk mentioned above will all have an impact on the ball formation rate, but the influence of each parameter does not exist in isolation, but is interrelated and constrained. For example, the smaller the diameter of the pelletizing disk, the lower the height of the disk, the greater the inclination angle of the disk, and the higher the rotation speed; if the height of the disk is increased, the inclination angle can also be relatively increased. Rotating speed. The smaller the inclination angle of the disc, the lower the speed. Therefore, several parameters influence each other. In the production, the relationship between the parameters should be adjusted according to the actual situation, and the reasonable configuration should be used to achieve the best effect of the ball formation rate and give full play to the role of the pelletizing disc.

Disc granulator is a kind of granulator equipment commonly used in the production of compound fertilizer. Reasonable selection of the parameters of the granulation plate is one of the ways to increase the output, and it is also an important factor to reduce the cost of the product. Due to the different physical and chemical properties and raw materials of the basic powder fertilizers in the production of compound fertilizers, different proportions, different production varieties, etc., in order to achieve a higher ball formation rate, various parameters should be adjusted appropriately according to specific conditions. Get the best granulation effect to increase production capacity

Organic fertilizer equipment manufacturer Tongda Heavy Industry specializes in providing: organic fertilizer equipment, organic fertilizer production line, pig manure organic fertilizer equipment, chicken manure organic fertilizer equipment, organic fertilizer processing equipment, organic fertilizer equipment, organic fertilizer production equipment, fertilizer processing equipment and other organic fertilizer supporting equipment Technical service of assembly line equipment.