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Non-Drying Extrusion Granulation Process and Characteristics of the Double-Roll Extrusion Granulator

The dry-free extrusion granulation process of the pair-roller extrusion granulator has a wide range of applications in powder processing granules. Its characteristic is that it does not need to humidify or heat the material, and it can directly process the particles. It can be used for the processing of organic and inorganic fertilizer particles, and also for the processing of feed particles.

Utilizing the non-drying extrusion granulation process, no waste water or waste gas is discharged outside during the production process, and it will not pollute the environment. The extrusion granulation process is short, the operation is simple, and it is convenient to realize the automatic control of production and improve the production efficiency. There are no special requirements on the properties and particle size distribution of the raw materials, so the source of raw materials is relatively wide.

Double Roller Powder Granulator

The five process stages of the production process of organic fertilizer and inorganic fertilizer by roller extrusion granulation

  1. Add the qualified raw materials into the mixer according to the ratio requirements and mix them evenly.
  2. It is transported to the disc feeder, and the metallic substance in the material is removed during the transporting process.
  3. The material in the disc feeder evenly enters the extrusion granulator. The material is forced to pass between the two pressure rollers to be squeezed into flakes. The flakes are broken into pieces by the coarse crusher under the pressure rollers. Sieving. The materials on the screen continue to be crushed and sieved.
  4. The semi-finished products are transported to the finished screening machine. The fine particles after screening are returned directly to the disc feeder. The large particles are crushed by the pulverizer and then returned to the disc feeder.
  5. The qualified products after screening are transported to the automatic packaging scale for weighing, packaging, and storage.

Double Rolloer Granulator for Sale in SX

The non-drying pair-roll extrusion granulator has the following characteristics in the production of granules:

  1. Extrusion granulation does not require heating and humidification of the materials, which saves investment and energy, and can also be adapted to the granulation of ingredients containing heat-sensitive materials, such as ammonium bicarbonate and certain organic fertilizers.
  2. No waste water or waste gas is discharged outside during the production process, and it will not pollute the environment.
  3. The extrusion granulation process is short, easy to operate, easy to realize automatic production control, and improve production efficiency.
  4. There are no special requirements on the properties and particle size distribution of the raw materials, so the source of raw materials is relatively wide.
  5. The production is more flexible, and the product plan can be changed at any time, which is conducive to the production of special fertilizers in small batches.
  6. The product has uniform particle size distribution, no segregation or agglomeration.
  7. The shape of extrusion granulation product is uniform and not round. Usually, if you need a more round product, you need to further shape the particles.

Double Roller Granulator in Manufacturing

The non-drying extrusion granulation process basically uses a pair-roll extrusion granulator as the main machine of the granulation. FPC has rich experience and good design concepts in the process design of the double-roll extrusion granulator. It has made considerable progress in the upgrading of equipment. Relatively speaking, the granulation rate is high and the return material is low. It is the most popular non-drying extrusion in the market. Pressure granulator process equipment.

Introduction to the Characteristics And Price of the Roller Extrusion Granulator

The roller compactor machine for dry granulation is the main equipment for making compound fertilizer, compound fertilizer and organic fertilizer compound fertilizer. The granulation equipment adopts the normal temperature extrusion process to extrude various raw materials at one time, with high ball formation rate and very little return material, so it is widely used. Moreover, the design of the roller extrusion granulation equipment is reasonable, the operation is simple, the maintenance is convenient, and the operation is stable. The most important thing is that the investment cost is the lowest compared to other pelletizers. The applicable materials are also relatively wide. It can not only process materials in dry powder state such as ammonium chloride, urea, ammonium phosphate, etc., but also process other raw materials for organic fertilizer machines. It has a significant effect in reducing production costs and efficiency, and the price of such a practical double-roll extrusion granulator ranges from three thousand dollars to ten thousand dollars.

Our company has been established for nearly 20 years, specializing in the development and production of fertilizer granulation equipment. The double-roller extrusion granulator produced by our company has reliable quality, real materials and reasonable prices. The main features are as follows:

  • Using dry granulation technology to realize the granulation process of various organic fertilizers and compound fertilizers, eliminating the need for drying equipment for wet granulation.
  • Compared with the traditional wet granulation process, this process will reduce your investment cost by more than 30%.
  • The granulation success rate is as high as 98%, and there is almost no return of materials, which saves production costs.
  • The organic fertilizer compound fertilizer particles produced by this equipment have high strength and high density, which are more conducive to transportation and storage.
  • Special abrasive tools can be customized according to user needs. The shapes of abrasive tools are diversified and suitable for a variety of industries.


There are a variety of specifications for the roll extrusion granulator, which are mainly determined according to your annual output requirements. Our company has always adopted the factory direct sales model. We are not only selling equipment, but more importantly, solving various production technical problems for customers. We have experienced fertilizer production technical engineers to plan and guide the whole process. You are welcome to call for detailed consultation at any time and let me be your free technical consultant.


How to Install and Debug the Newly Purchased Double Roller Granulator?

Organic fertilizer dry rolling granulator is a new granulator equipment in organic fertilizer production plant, also known as dry powder granulator or organic fertilizer dry granulation machine. The reason why it is called organic fertilizer dry rolling granulator is that the equipment can directly compress and granulate the fermented powdered organic fertilizer during the granulation process, and the product can be packaged directly through the organic fertilizer packaging equipment after one molding. The process of drying and cooling after granulation in the traditional organic fertilizer production process is avoided.

Installation and commissioning of dry roller granulator for organic fertilizer:

  1. Installation:

After the newly purchased organic fertilizer dry process roller granulator arrives at the plant, the granulator is taken as the main machine, which is determined according to the number of units, and is installed in combination with the process flow chart to find out the elevation and horizontal placement. The machine frame has corner holes, which can be installed on the concrete.

  1. Debugging:

(1) Axial alignment: it has been adjusted during installation. Generally speaking, it is not possible to adjust it. When adjustment is needed, tighten or loosen the covers on both sides of the passive bearing seat, so as to push the displacement of the eccentric sleeve corresponding to the driving shaft roller.

(2) Adjustment of press roller clearance: sometimes it is necessary to increase the output or bite angle in production. At this time, the distance between the two pressing shafts can be increased. The distance between the driving shaft roller and the passive shaft can be increased. The steps are as follows: stop the machine, remove the upper frame of the two bearing blocks, and adjust the adjusting plate between the two bearing blocks to the required thickness.

(3) Adjustment of ball and socket: the ball and socket of the dry rolling granulator of organic fertilizer is formed by the concave and socket on the surface of the main roller, so there are problems of axial alignment and circumferential alignment;

(4) Axial alignment steps: loosen the 6 connecting bolts between the driven gear and the adjusting sleeve, so that the adjusting sleeve and the driven gear are slightly separated. Since one ball and socket adjustment amount has been considered in the design, and two adjusting bolts are provided, the dislocation can be adjusted no matter how much the dislocation is.