In the context of compost pellet making, the granulation rate refers to the proportion of raw material that successfully convert into organic pellets of the desired size and quality. So, for compost fertilizer granulation plant, the granulating rate is a key performance indicator in the production process of granular organic compost.  Then how about the organic compost granulating rate for 3-6mm granules? The most common size that organic fertilizer manufacturers adopt to produce granulated compost fertilizer. The answer is here.

What is the general granulating rate of compost pellet machine?

For producing 3-6 mm organic compost granules, the granulating rate of YUSUNXIN compost pellet making machines generally ranges between 90% to 97%. The specific compost granulation rate varies with design.

Disc pelletizer – 93%

Because of economical price and small space occupation, disc granulator is popular with compost fertilizer granulation plants. In addition, high granulation rate is also an important reason. The machine mainly adopts wet granulation method, which use liquid as binder. So, its organic compost granulating rate can reach to 93%.

Disc granulator with high organic compost granulating rate
Rotary drum granulation line with disc pelletizer

Rotary drum granulator – 90%

Rotary drum granulator is the common choice for mass compost granule production. The machine also employ the wet granulation method. But because of large amount of compost material processing, its granulating rate is 90%. Is there method to improve it? Of course. You can choose to add a pan pellet equipment after drum granulation of composted organic fertilizer.

Double roller press machine – 95%

As for the double roller granulator for dry compost pellet making, the granulation rate can reach to 95%. Why? The dry granulation equipment work to make granular compost by physical extrusion force between rollers instead of natural rotation. Therefore, the compost powder can form into organic fertilizer granules easier.

Double roller press granulator for dry compost granulation
New type organic fertilizer granulator for making compost granule with high hardness

New type organic fertilizer granulator – 97%

And the new type organic fertilizer granulator combine the two method – wet granulation and stirring teeth mechanical force assist. This is the reason why it has a higher granulation rate than the above three compost pellet machines. It is 97%.

What other factors affect the organic compost granulating rate for 3-6mm granules?

Besides compost pellet making machine choosing, you also can improve the organic compost granulating rate for 3-6mm granules by many ways.

Compost Raw Material Quality

  • Moisture Content: Ideal moisture content for organic compost granulation typically ranges between 20% to 40%. Too high or too low moisture can affect the granulation process.

  • Compost Particle Size: Finer particles generally result in better granulation of compost. Pre-processing methods like compost grinding or sieving might be necessary to for this.

Adding Binding Agents during the compost pellet making

Spraying device on pan granulator for compost fertilizer granulationBentonite as binder for compost granule making

Adding binders can improve the granulation rate for 3-6mm granules. Because this helps compost powder particles to adhere more effectively. For this, the commonly used fertilizer granulation binders contain water, bentonite, humus, etc.

If you still have other requirements for granulated compost making, welcome to contact us immediately. YUSHUNXIN will offer you the best solutions according to your actual conditions.

Xingyang City, Zhengzhou City, Henan Province, China

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