Roll Extrusion Granulator for Fertilizer

Pellet plant 

Fuyi offers a proven range of machine sizes for high pressure granulating, which covers nearly all requirements of the clients.  

Wee can design different kinds of granulating process asscording to your requirements.

Working Principle 

Two rollers rotate in reverse, materials between rollers are compressed, the intermediate products are bar shape / sheet, then the crusher will crush the bar shape products into irregular granules, finally using the rotary screen to sieve standard products, non- standard products will be recycled mix with new material for the next granulating process.

 Summary

• Offers higher bulk specific gravity. (Materials can be processed without being bulky.)
• Maintains stability of bulk specific gravity.
• Improves liquidity. (It facilitates constant feeding, weighing, and others.)
• Eases the system handling.
• Prevents materials from scattering (i.e., improves the working environment).
• Facilitate mixing of materials.
• Provides smooth melting of materials (in other words, hardly forms lumps of materials).

Unit structure

1)  Pre-feeder: Equipped with mechanical vibrating feed hopper with automatic control and timing vibration

2)  Quantitative feeder: Adopts frequency conversion adjusting speed to ensure the feeding accuracy.

3)  Force-feeder: It is composed of variable frequency motor, cone helix, stirring knife tooth and cone feeding hopper with visual glass window as well as feeding mouth assemblies and so on. Its function is to further achieve degassing and perform pressure feeding.

4)  Flaking machine: it is composed of left and right fixed bearing seats, frame structure, two alloy steel rollers, two hydraulic oil cylinders, electric automatic pump station as well as hard tooth surface dedicated reducer and main driving motor.

5)  Crusher: it is composed of cutting-up box, cutting-up main shaft and special rotating cutting blades and the main shaft is driven at high speed by the motor to break the extrusion forming materials and dress into pellets.

6)  Vibration sieve: It is equipped with screen block-proof device and convenient to clean the screen. The broken pellet and powder materials from the breaking and dressing machine is divided into pellet product and recycling powder.

 7)  Screw conveyor for recycle: It sends the unaccepted powder material returned from vibration classification screen to the feeding elevator.

8)   Bucket elevator: HLType, used for feeding materials.

9)   Control cabinet: It is composed of the electrical components such as electric control box, frequency conversion controller, ammeter, voltage meter, light, button switches, voltage switch and so on. All the electrical equipment is controlled and operated concentratedly. 

The pelletizing production line

    Powder are entered into a roller press and compacted between the rollers to a strip with high density.

   We can design different diagram for different clients, we need to design the layout according our clients provide us some basic information about the size of their factory, and how do they want to place the equipments. Our target is making the process simpler, easier, more economic and more effective. 

Rollers and final granules shape 

Test on Site 

Installation Site          

 Advantages of  pellet machine

• Adopting increased shafts output dedicated reduce and drum gear shaft coupling effectively protects the rolls and the main bearing from damage, increase the driving efficiency and further improving the production of products. One roller’s bearing seat is fixed and the other roller’s bearing seat is sliding.
• In the surface of the roller, many holes are arrayed. According to the different compression rate of the materials, choose the trough of one roller aiming at the trough of another roller, or peak to trough. Two rollers are arranged in horizon.
• With the supporting pressure of hydraulic cylinder, they are close to each other and the hydraulic system can has the multiple and automatic protection function.The optimized hydraulic system makes the motion flexibility of dynamic rollers stronger and be able to reject the iron lumps mixed in unexpectedly and protect the equipment to run safely.
• Roller pulling with roller removal device, it’s more easily and quickly for you to change the rollers, and save your costs of changing. 

Service

Fuyi has designed and manufactured roller presses and equipments for briquetting and compacting NPK fertilizer, powder, chemical, minerals, etc, since 2006. We take care of green field projects as well as of existing plants. Our services cover material tests, process layout, engineering, and supply of complete granulating plants or key equipments, guidance of installation and commissioning, training.

 Also, the company manufactures and supplies equipment for drying equipments and dust collector machines.

 Extensive experience and best quality production facilities guarantee a smooth workflow from start to finish.

                                      Welcome our sincere clients come to visit out factory.