Adjustment Of The Angle Of Organic Fertilizer Disc Granulator
Disc granulator is one of the important equipments for organic fertilizer production, and its main working part is a rotating inclined disc. It is based on the principle of agglomeration and granulation of powder materials, so that the powder materials with wet surface are continuously rolled or turned inside the disc granulator equipment, coupled with the extrusion of mechanical action, these powder materials are gradually formed into granules.
Several parameters that will affect the granulation effect during the production by the disc granulator : the diameter of the disc, the height of the disc, the angle of inclination and the rotational 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 a 2-meter-diameter disc granulator can reach more than 10,000 tons, and the annual production capacity of a 2.2-meter-diameter disc granulator can reach more than 15,000 tons. Therefore, the diameter of the disc should be selected from the perspective of annual production capacity. consider.
Once the diameter of the disc is determined, the height of the disc can also be basically determined. Generally speaking, the larger the diameter, the higher the height of the disc, but the height of the disc can affect the pelletizing 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, with small particles stagnant near the bottom of the disc, and larger particles discharged beyond the edge, so that the higher the edge of the disc, the longer it takes to form a ball. If the edge of the disc is lower, the ball formation time is shorter, and the particles that come out are relatively small in size. Therefore, on the one hand, the height of the tray can affect the size of the product particles discharged from the granulation tray, and on the other hand, it can also affect the level of output. Because if the material stays in the pan for too long, the speed of discharging 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 percentage of spheroidization. Therefore, it is reasonable to choose a high pan height. important. SX can provide you with pan granulator with different heights.
Used as fertilizer production equipment, the inclination angle of the disc granulator cannot be less than 35% of the natural angle of repose of the granulated powder, otherwise the material will stick to the disc and rotate with the disc body, and the inclination angle increases, and the rotational speed increases. Raised, can avoid material accumulation in the lower part, can not produce drop and roll up and down. However, the greater the angle of inclination, the faster the roll down and the smaller the spilled particles. The optimum disc inclination is related to the diameter of the disc, that is, the inclination of the disc decreases with the increase of the diameter of the disc. This is because the final velocity of the particles moving along the disk surface increases with the increase of the diameter of the disk. In order to avoid the impact and rupture of other particles when the particles descend, the inclination angle of the disk must be reduced.
Since the particles will gradually grow as they roll down along the disk surface, the more times the material rolls in the disk per unit time, the faster the particles grow up, that is, the working efficiency of the disk granulator is proportional to the rotational speed. Because the base powder fertilizer rises with the rotation of the disc with a certain inclination, and rolls down under the action of gravity, at the same time, it is thrown to the edge of the disc due to the action of high central force, and these powders collide and merge with each other. , and are bound together by the surface tension of the liquid phase. Therefore, the speed of the rotation speed will affect the bonding and balling process of the powder fertilizer on the one hand. If it is too fast, the powder fertilizer will be thrown out of the tray before it can be formed; if it is too slow, the powder will be formed into a ball and the time will be too long, so that the diameter of the particles outside the tray will be larger than the standard requirement; If the inclination angle increases, if the rotation speed of the disc is too slow, the material will accumulate in the lower part of the disc, and the drop and repeated rolling up and down will not be produced, which will also affect the ball formation rate.
With the increase of the rotating speed of the granulating disc, its centrifugal force will increase, which will make the particles stick to the edge of the disc, prevent the particles from rolling down, and a funnel-shaped vortex will appear on the surface of the disc. In order to maintain the effective utilization area of the disk surface, the inclination angle of the disk must be increased while increasing the rotational speed. As the inclination angle of the disc increases, the rolling speed of the particles will also increase accordingly, so the inclination angle of the disc should be kept 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 factor. Click here to know more about disc granulating machine.
Several parameters of the above-mentioned pelletizing disc will have an impact on the spheroidization rate, but the influence of each parameter is not isolated, but interrelated and contained. For example, the smaller the diameter of the granulation disc, the lower the disc height, the higher the inclination angle of the disc, the higher the rotational speed; if the disc height is increased, the inclination angle and Rotating speed. The smaller the inclination of the disc, the lower the rotational speed. So several parameters affect each other. In production, the relationship between the parameters should be adjusted according to the actual situation, and the reasonable configuration should be made to achieve the best ball formation rate and give full play to the role of the granulation disc.
The disc granulator is a kind of granulator equipment commonly used in the production of compound fertilizer. Reasonable selection of pan pelletizer is one of the ways to increase the output and an important factor to reduce the cost of the product. Due to the different physical and chemical properties and raw materials of each basic powder fertilizer in the production of compound fertilizers, different proportions, and different production varieties, in order to achieve a higher ball formation rate, each parameter should be properly adjusted according to specific conditions. Get the best granulation results to increase production capacity. If you are interested in it, you can check https://fertilizerequipmentmanufacturer.com/fertilizer-granulator-machine/disc-granulator-machine/ for more information