The disc granulator machine is widely used, not only in the organic fertilizer production process but also in the granulation work of the npk production line and the bio organic fertilizer production. The operation of the disc granulator involves paying attention to the upstream processing conditions and understanding how different variables interact with each other. Acts to affect the product coming off the disc.
1. Disc speed
Disc speed refers to RPM, or the rate at which a disc spins. Speed is regulated by a variable frequency drive (VFD), which gives the operator more control over speed regulation during startup and shutdown, or during surges. Speed is the least important variable and is used only with angle adjustment to obtain optimum material coverage on the granulator (material should cover the entire pan when the spray system is off).
2. Disc angle
The angle of the pot is adjusted by the jacking screw of the hand wheel. In a way, angle and speed adjustments are free. The steeper the angle of the pan, the faster the speed required. Higher angles result in shorter dwell times on the disc, producing smaller particles, while lower angles result in longer dwell times on the disc, producing larger particles because the particles have more time to orbit Cross the board and collect more particles.
3. Feed rate and position
Feed speed and position are also adjustable. However, to maintain product size and quality, the feed rate to the pan must be constant. Any abnormality in the feed will result in an abnormal product.
4. Adhesive spraying speed and position
The binder injection rate as well as the binder injection location are also adjustable. Operators can use binder spray rate and location to respond to feed changes and encourage the use of larger or smaller pellets.
5. Plow/scraper position
As liquid is sprayed onto the disc and mixed with the powder feed, buildup may begin on the bottom and side walls of the pan. This buildup must be removed or the process will not work properly. A plow or scraper removes this buildup and creates a smooth surface. As mentioned, they also help guide particles into their respective streams as they sort themselves.