Dry Extrusion Granulation Method
Roller granulator is an important equipment for producing organic fertilizer. It plays a very important role in the organic fertilizer production industry. In our usual production activities, there are many methods of organic fertilizer granulator. In order to help you know more about the pelletizing process of organic fertilizer, let's focus on the roller pelletizer.
The model is a series of extrusion roller granulator sx. Its working principle is that the belt and pulley are driven by the motor, transmitted to the drive shaft through the reducer, and synchronized with the driven shaft through the transfer gear, and work in the opposite direction. The material is added from the hopper, formed by the hopper, demoulded and pelleted, and then transported to the crushing and screening chamber through a pair of chains, where the finished particles (balls) are screened and separated, and then returned to the material and mixed with the new material. Granulation. Through the continuous rotation of the motor and the continuous entry of materials, mass production can be realized. It can be adjusted by hydraulic pressure. The equipment not only has scientific and reasonable structure, but also has less investment, quick effect and good economic benefit.
Suitable raw materials for fertilizer roller extrusion granulator:
1) Ammonium sulfate, ammonium chloride, ammonium sulfate, etc 2) Potash fertilizer: potassium sulfate, plant ash, etc 3) Phosphate fertilizer: Superphosphate, superphosphate, calcium magnesium phosphate, phosphate rock powder, etc. The extrusion granulator of organic fertilizer should prevent the granular powder material from entering the extrusion granulator, and then use external force to compact the powder material tightly. Due to the use of different external force methods, the molecules recombine, making the material look like cylindrical particles. The whole process of forming and extruding is mechanical operation, which does not need manual operation. Stirring and granulation are mainly used to shape the material into a round shape.
More types of granulation method, go to https://fertilizergranulatorfactory.com/granulation-technology/
Advantages of roller extruder granulator:
Extrusion granulation method needs less equipment and less investment. In 1987, the International Center for fertilizer development (NFDC) conducted a study in developing countries The investment of extrusion granulation is only 50% of that of slurry granulation or chemical granulation, 20% less than that of steam granulation;
2. Extrusion granulation does not need heating and humidification of materials, which saves investment and energy consumption, and can be used for granulation of materials containing heat sensitive materials (such as ammonium bicarbonate and some organic substances);
3. There is no waste water or waste gas discharged outdoors in the production process, which will not pollute the environment;
4. The extrusion granulation process is short, easy to operate, easy to realize automatic production control and improve the production efficiency;
5. There are no special requirements for the properties and particle size distribution of raw materials. The sources of raw materials are wider and the production is more flexible. If the product plan needs to be changed, it will be more convenient and conducive to small batch production of special fertilizers;
6. The product has uniform particle size distribution, high hardness, no segregation and agglomeration.
The thickness of the large sheet produced by the extruding organic fertilizer granulator equipment is 5-20 mm, and the surface density is 1.5-3 times of the feed. Then the large flakes are made into flakes, crushed and sieved to obtain the desired granular product.
The particles formed by pressure will form hot spots at the contact points, thus melting the material. As the temperature drops, the material cools to form a fixed bridge. The above is the detailed introduction of granulation method of organic fertilizer granulator. You can learn more about it. There are many ways to granulate organic fertilizer. It can be said that extrusion granulation is a common method, so we must deal with this method more skillfully, in order to ensure the quality of organic fertilizer granulator granulation.
