Double roller granulator is favored by many fertilizer manufacturers, especially for NPK granules making plants. Because it makes fertilizer granulation finshing quickly at a low investment. The machine adopts dry granulation method, which mainly makes use of the physical extrusion force between two rollers to turn chemical powder into pellets. In addition, if you want to start a organic fertilizer granulation project, it can also fully meet your requirements. Besides double roller press granulator, we also can provide you with corresponding equipment to form a industrial double roller granulation line for fertilizer manufacturing!

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What method does double roller extrusion granulator adopt to make fertilizer pellets?

Are you interested in double roller granulation machine? Do you want to use it in your fertilizer production project? First, it is necessary to learn the granulation method it adopts.

This pellet equipment adopts dry granulation method, which nearly turns chemical material into granule without water. It mainly makes use of extrusion force between the two rollers to granulate compound fertilizer. And the feeding material moisture content must be less than 10%. In this way, there is no need for subsequent drying and cooling. So you can complete the manufacturing of compound fertilizer particles in a simpler process and at a lower cost.

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What is the design of the dry roller press granulation line?

As mentioned above, the double roller granulator adopts dry granulation method, which does not require dryer and cooler. Therefore, for NPK granules manufacturing, the system usually contains 6 machines.

  • Batching machine: Feeding fertilizer materials precisely according to the formula.

  • Crushing equipment: Grinding NPK material into fine powder, which make roller granulation easier.

  • Mixer: Mixing the NPK powder evenly to ensure the balanced nutrient in final fertilizer pellets.

  • Double roller granulator: Pressing dry npk powder into fertilizer granules quickly.

  • Screener: Separating required size NPK pellets for you. Then returning the small and large NPK granules to re-process.

  • Packaging scale: Bagging final NPK granules in required weight, like 10 kg/bag, 20 kg/bag, 50 kg/bag, etc.

Top 2 Double roller granulator system with 1-20 t/h capacity

In general, there are 2 types of double roller granulation systems most fertilizer pellets manufacturers buy: 1-4 t/h small scale fertilizer granules making line and 4-20 t/h roller extrusion system for large scale fertilizer pelleting.

1-4 t/h small scale fertilizer granules making line

If you plan to start a small scale fertilizer granules making project with a 1-4 t/h capacity, you only need 1 set of double roller granulator. YUSHUXIN can offer you the machine with models of 1 t/h. 1.5t/h, 2 t/h, 2.5 t/h, 3 t/h and 4t/h. As for the whole fertilizer granulation line, it contains fertilizer machines as follows. Static batching machine, SXFLF-600 vertical crusher (3-5 t/h), double shaft mixer, roller granulation machine, SXGS-1240 rotary screener (3-5 t/h) and single bucket bagging machine.

Technical parameters of YUSHUNXIN double roller granulator

Model Power(kw) Granule Diameter (mm) Roller Sheet Size (mm) Dimensions (mm)
SXDG-1 T 15 3-10 150×220 1450×800×1450
SXDG-1.5 T 18.5 3-10 150×300 1450×800×1500
SXDG-2 T 22 3-10 185×300 1630×850×1650
SXDG-2.5 T 22 3-10 245×220 1700×1000×1670
SXDG-3 T 30 3-10 200×400 1960×980×1760
SXDG-4 T 37 3-10 250×400 1960×980×1760

4-20 t/h roller extrusion system for large scale fertilizer pelleting

When it comes to a over 4 t/h granular fertilizer production project, you can combine 2 or more roller extrusion granulator together. Here, disc distributor can help you divide mixed powder materials to the double roller pelletizers smoothly. In this way, it can fully meet your requirements of 4-20 t/h fertilizer pellets manufacturing. At the same time, you can replace the other machines with a large capacity one. Such as dynamic bathing machine, SXFLF-1000 vertical grinder (10-15 t/h), horizontal mixer, SXGS-2080 sieving machine (10-20 t/h), dual bucket packing machine, etc

3 features of fertilizer pellets under double roller granulation

But the most direct and effective way to choose a suitable granulation machine is testing the finished fertilizer pellet. Then what kind of NPK fertilizer granule can double roller pelletizer produce for you? Usually, the fertilizer granule of double roller granulator has 3 highlights as follows:

3-10 mm fertilizer granule making

What is the size of final granule produced by double roller granulator? This is an item most fertilizer manufacturers focus on. In general, our double roller extrusion granulator can prepare compound fertilizer particles with a diameter of 3-10mm. This can fully meet your needs.

Roller press machine sheets for 3 mm fertilizer granules makingDouble roller granulator for 8 mm fertilizer pellets production

Various shapes for your choice

Besides the size of ball socket on the roller sheet, you also have a wide range of options on shape. For the shape of ball socket on the roller sheet, we can make pillow shape, semicircle shape, stick shape, pill shape, walnut shape, flat ball shape and square bar shape according to your requirements. So whether you want to prepare oval, irregular, wheat shaped or other shapes of chemical fertilizer granules, you can finish it easily and quickly.

High hardness

Then what is the difference between the fertilizer granules of double roller granulation and that of  pan granulation and rotary drum pelletizer? The conspicuous one is hardness. Double roller granulator can offer you NPK compound fertilizer pellet and granular snow remover with a higher hardness than that of other chemical material granulation equipment. The hardness can reach 10-52 N, which means your final compound fertilizer particle has a low possibility of pulverization and is more convenient for transport, storage and use.

0N
High hardness

What are the benefits of using double roller granulator in fertilizer pelleting system?

Wide application

Whether you want to produce 20-20-20, 20-10-10 or other NPK fertilizer granules. Whether you plan to prepare high, medium or low concentration of special compound fertilizer. Double roller granulator can fully meet your requirements. And the quality of the final granule is in line with the technical requirements of compound fertilizer.

Various capacities

In order to meet the different requirements of fertilizer manufactures for capacity, we especially design various models of double roller pellet making machines. SXDG-1T, SXDG-2.5T, SXDG-4T, etc. Provided you want to start a small scale compound fertilizer granulation with an output of 1-20 t/h, they are the optimum choice.

High granulation rate of 95%

Do you want to granulate fertilizer powder materials with high efficiency? Do you want to buy a compound or organic fertilizer granulator with a low material returning rate? Here, we recommend you choose double roller pelletizer. Its granulation rate can reach 95%. Hence, there is only a small amount of materials needed to be returned to reprocess. And you can produce more qualified fertilizer pellets at the same time.

Low cost

Using double roller pellet making equipment, you can reduce the cost of 2 aspects. For one thing, it has a favourable price. Only need $4,500-$22,000, you can purchase it. For another, it can reduce the cost of machine changing. The material of double roller granulation machine is Q235 boiler steel and roller sheet material is 20GrMoTi or 4Cr13 stainless steel. So only by changing roller sheet every six months, you can keep this machine running for a long time.

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What kind of fertilizer can double roller press pelletizer produce?

If you want to further know that is double roller granulation machine suitable for you? You need to learn whether it can produce the fertilizer you want? In general, it is suitable for the following occasions:

NPK compound fertilizer manufacturing

In order to supply nitrogen, phosphorus and potassium to crops in a balanced way, it is essential to process NPK fertilizer into granules. Here, double roller granulation equipment is an ideal choice. Whether you want to prepare 20-20-20, 20-10-10 or other NPK fertilizer granules, it can finish the task quickly and easily.

NPK fertilizer roller extrusion machine production
Sonw remover double roller granulation

Snow remover granulation

Double roller granulator is also widely used in snow remove agent making. Because after granulation, snow remover is not only more effective, but also easier for packaging, transportation and storage. In addition, using this extrusion pellet making machine, you can turn snow melting agent into granules at a lower cost.

Contact us for your own double roller fertilizer granulation business plans!

If you have any other want to know about fertilizer double roller granulation, welcome to contact us now! In addition, there are also many other fertilizer granule making plans for your choice. Such as wet disc granulation line, large scale rotary drum pellet production, etc.

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