Double Roller Granulator

double roller granulator

The double roller granulator is an essential equipment for compound fertilizer granulation. This type of machine adopts the principle of physical extrusion, and turns the powder materials into pellets that shape you want. Because it adopts dry granulation, fertilizer granulation can cut the drying procedure. You can package the formed low moisture fertilizer pellets directly. Therefore, it’s a replacement product for saving energy and lowering cost in the complex fertilizer granulation business.

Here is more information about our double roller extrusion granulation machine for your reference.

Cassie

Senior Granulator Design Engineer

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Designs for Double Roller Extrusion Granulation in Our Factory

The double roller extrusion granulator making machine structure mainly has granulation, molding and screening parts. And we are going to know more about how they design and work subsequently.

Our factory makes special designs for double rollers.

  • The rollers use a new type of metal, which has the advantages of anticorrosion and anti-shock. You can put forward the ball socket’s shape and size, and then we design them accordingly. Now the ball shape and bar shape are used widely. But you can also choose semi-round shape, walnut shape and so on. The final granule size for double roller granulator is usually 3-10mm.

    What do you need to pay attention to? The double roller fertilizer granulator making pellets is usually flat. However, if you want to make the pellet shapes much more round, you can choose our organic fertilizer polishing machine. Besides, you can design the rollers directly. If the ball socket is much deeper, the pellets are more round. But it will damage the rollers a lot. You will need to change them timely.

How to extrude pellets by the double roller compaction granulation?

  • Firstly, you can add materials from the feed hopper, and then double roller press granulator rollers extrude pellets and release them from the mold. They form a pellet through two semi-balls’ combination.

  • Then pellets fall into the crushing chamber. Under the force of the drive shaft, a chain drives two maces to rotate for separating the extruded but cohesive particles. That’s how fertilizer pellet extruder machine’s granulation works.

    The finished granules and powder are sieved from the lower sieve, and the subsequent sieving machine separates the granular material and the returned material. The belt conveyor is used to mix the returned material with the new material, and then granulate again.

  • The finished granules and powder are sieved from the lower sieve, and the subsequent sieving machine separates the granular material and the returned material. The belt conveyor is used to mix the returned material with the new material, and then granulate again.

With these designs and structures, the double roller extrusion pelletizer makes high quality pellets. The pellets’ hardness is up to 15-20N. And the final products’ yield is up to 95%. You can use this machine to start a small scale fertilizer process line.

Three Tips for You to Choose the Best Double Roller Granulation Machine

How do you know double roller granulator is the best one for you? How to make the double roller extrusion granulators produce fertilizer quickly? There are some points for you to master later.

roller for double roller granulator

Understand what raw materials you have.

What raw materials you have and what kind of fertilizer you want to granulate are on your choices. For instance, if you have zinc sulfate,potassium sulphate(SOP), potassium chloride, ammonia chloride, ammonia sulfate, magnesium sulfate, sodium chloride, etc, then a double roller extrusion granulator machinery will be your best choice. It can make the products’ quality comply with the technical index requirements of compound fertilizer.

How a double roller granulating equipment works?

The roller compactor adopts dry granulation. Dry granulation is different from wet granulation. You needn’t put adhesive into the materials, and there is no need to increase the moisture content. It granulates under the normal temperature. The raw materials’ moisture is 5-10%. In this way, there is also no need for drying the formed granules, which cuts a lot of cost in your production. Besides, as the friction coefficient between the materials and the rollers is small, the energy cost is also much lower. You can start your compound fertilizer double roller granulation plant environmental-friendly.

Choosing the right model for your business is easy.

What’s your expected capacity for a double roller extrusion pellet making machine? In our factory, there are mainly three models for you to choose from. They all can process 3-10 mm pellets.

Firstly, the SXDG-1T model makes pellets 1 ton per hour. The roller sheet size is 150*220 mm. If the pellet diameter is between 3 and 4.5 mm, the power is 11 kw; and if the diameter is larger than 4.5 mm, the power is 15 kw. It’s a small scale granulation machinery.

Secondly, the SXDG-1.5T model makes pellets 1.5 tons per hour. The roller sheet size is 150*300 mm. If the pellet diameter is between 3 and 4.5 mm, the power is 18.5 kw; and if the diameter is larger than 4.5 mm, the power is 22 kw.

Thirdly, the SXDG-2T model makes pellets 2 tons per hour. The roller sheet size is 185*300 mm. If the pellet diameter is between 3 and 4.5 mm, the power is 22 kw; and if the diameter is larger than 4.5 mm, the power is 30 kw. We can also develop larger capacity double roller granulator machine as you want.

Advantages of Double Roller Extrusion Pellet Machine Production Line

double roller granulator advantages

A full double roller extrusion pellet machine production line includes compost system, crush system, batching system, blending system, granulation, drying and cooling system, screen system and package system, deodorization and dust removal system. There is not too much difference between granulation machines production line. The most important reason that you and our customer before prefer a double roller extrusion pellet machine is the double rollers granulator’s unique designs and working principles.

Compared with other granulator machines, double roller granulator is much smaller and more exquisite. It takes up less space and uses less energy. When you want to make granules with it, you just need to pour the dry powder into the feed port directly. And then the rollers extrude powder into specific shapes. The powder material is compressed by mechanical pressure without any wetting agent, and the purity of the product is guaranteed. The particle hardness is high, which is more significant than other granulation methods.

Welcome to Visit Our Factory for Commercial Cooperation

Our machine’s operation is easy and automatic. There is not too much burden for you to operate it. But, how do you install the machine? How do you design the whole double roller extrusion granulator machine production line? The best answer for you is you can visit our factory directly.

In our factory, you can see how we make every part and do we turn them into a complete machine. The factory works every day to make machines for delivery. Besides, as we make a deal, you can get a detailed manual. It can teach you how to install every machine part in the later. How to maintain the machine? Or, how to solve common problems?

Looking forward to our commercial cooperation. You can have the beat machine testing experience with our double roller extrusion pellet machinery.

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