The disc granulator has the characteristics of high granulation rate, simple layout, favorable price and convenient maintenance. After the material is crushed in the pulverizer and mixed in the mixer after being metered, it is conveyed by the belt conveyor to the top of the disc granulator, and then fed into the disc in a quantitative manner. The material in the disc is bonded by the sprayed adhesive, wrapped into granules, and rolled in the disc with the transformation of the disc and gradually grows up. Because the disk has the ability to automatically classify during rotating, the large particles float on the top and are discharged one after another from the bottom of the disk, and the small particles continue to bond with the newly added material in the disk and roll and grow. until removed. Click here to know more
The inclination of the disc must not be less than the natural angle of repose of the mixture, otherwise the material will stick to the chassis and rotate with the disc. Usually 45° is the original inclination value. It can be adjusted between 45°- 60° as required. The commonly used binder for disc granulation is sulfuric acid or phosphoric acid. The concentration of sulfuric acid is usually 50%. The amount used is about 50ks of 98% sulfuric acid for each ton of fertilizer pellets manufacturing.
The disc granulator consists of a tray and a support frame with adjustable inclination and rotation speed. The quality of disc granulation mainly depends on the description and operation of the disc granulator, such as the inclination angle of the granulator, the rotation speed, the diameter of the disc, the concentration of the binder, the dosage, the feeding and discharging method, etc. Usually the diameter of the disc is 1.6-22m, the inclination angle is 45°-60°, and the rotation speed is 28r/min
The granulation of the disc granulator is very uniform, the return material is very low, and the production capacity is large. A disc granulator can produce 1-6 tons of products per hour. The disadvantage is that the material cannot be pretreated, and the dust and smoke pollution is more serious, which is mainly due to the relatively large opening of its own. If you want to learn more about pan granulation, you can visit https://fertilizerequipmentmanufacturer.com/fertilizer-granulator-machine/disc-granulator-machine/