Dry granulation machine implements a granulation technique that never requires the addition of water or binder when granulating. In addition, you don’t have to dry the finished pellets by using the drying machine. Generally speaking, this technique makes use of the crystal water available in the raw materials, which shapes them by strong extrusion.
So, the dry granulation equipment combines compressing, crushing, and granulating. And to some extent, this equipment makes up for the deficiency that comes with the wet granulation method. This is in terms of the requirements of raw materials and the granulating process.
What Entails the Dry Granulation Process?
Typically, the dry granulation machine implements the dry granulation process to create fertilizer granules. It’s also applicable to creating pellets without using liquid solutions. This is mainly because the granules might be sensitive to the heat or moisture. So, it shapes the granules by simply pressing on the materials.
It’s also worth noting that you could use a double roller press machine to create fertilizers through dry granulation. Usually, the counter-rotating rollers offer a strong extrusion force that helps in pressing materials into relatively large tablets. Inside the machine, it consists of a unique structure that plays a vital role in crushing these tablets and making them into pellets.
What Are the Dry Granulation Steps?
In general, we can divide the entire granulation process into three steps. These include the preparation of materials, feeding into the equipment uniformly, and granulation. Let’s take a look.
– Preparation of materials. When it comes to dry granulation, the raw materials should contain crystal water, or perhaps the moisture content is approximately 5%. For granulating, you’d instead use the 80 mesh to 300 mesh materials. When it’s too crude, the finished pellets might be uneven. On the other hand, for the fine powder, it is quite challenging to granulate. As a result, you must prepare appropriate raw materials before starting dry granulation.
– Feeding uniformly. When you are feeding materials into your dry type granulation machines, continue feeding uniformly. This is very important to the entire process. The roller sheets are usually easy-to-damage parts. That means that uniform feeding might prolong the service life of those roller sheets. What’s more, they will also play a significant role in improving the granulation rate.
– Granulation. In this stage, the counter-rotating roller sheets will basically press the materials you fed into large tablets by making use of strong extrusion force. After that, the inner structure of your machine will crush those tablets and granulate. Lastly, the finished pellets will be discharged from the machine’s outlets.
You should know that the dry granulation process has no wastewater or gas emission. That means you won’t be causing any harm to the environment when using this piece of equipment. Are you concerned about the high prices of dry granulation facilities? Or perhaps you are looking for a professional manufacturer of fertilizer equipment? You can undoubtedly get a supply which meets your needs, whether for the profession or costs.