How to Make Slow Release Fertilizer Pellets from Compost

Producing slow-release fertilizer pellets is a smart, sustainable way to transform compost into high-value organic fertilizer. Mais, how to finish the project smoothly? Here are detailed process, used slow release material choosing tips, adding method, etc for you.

What is the process to make slow release fertilizer pellets from compost?

En général, preparing compost fertilizer granules with slow releasec performance contains 5 parts.

The process begins with preparing high-quality compost, ensuring it is well-decomposed and in fine powder particles.
Alors, mélange the compost powder with slow-release agents to form a cohesive mixture.
Next, you need to turn the compost mixture into slow-release fertilizer pellets using a compost pellet machine.
Once formed, drying and cooling the pellets thoroughly to remove moisture, which helps in their long-term storage and effectiveness.
Enfin, packing granulated slow release fertilizer into 10 kg/bag, 20 kg/bag or 50kg/bag according to your needs

In sum up, the whole system to make slow release fertilizer pellets from compost consists 8 equipment. Batching machine, moulin à compost, mixer, pelletizer, dryer, cooler, coating machine and bagging equipment. These pelletized organic compost fertilizer, when applied to soil, gradually release nutrients, supporting plant growth over an extended period.

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What material can be used for slow release fertilizer granule making?

To produce compost-based pellets with slow-release properties, you need to incorporate some material. Key additives include:

Humic Acid or Biochar: These enhance nutrient retention, ensuring that the nutrients are available to plants over a longer duration.
Zeolite or Clay Minerals: These materials slow down nutrient release, providing a controlled nutrient supply to plants.
Natural Binders: Molasses, starch, or lignosulfonate you can use to enhance pellet durability.
En outre, to enhance slow-release performance of your compost pellets, a coating can be applied to the pellets. Coating materials such as sulfur, polymers, or oils add moisture resistance and further regulate the release rates of nutrients.

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how to add Slow-Release Agents when make slow release fertilizer pellets from compost?

To incorporate slow-release functionality with your granular compost fertilizer, il y a 2 ways for your choice.

Mixing before slow-release fertilizer granulation

For one thing, you can blend the slow-release additives into the compost material before granulation. After the compost is crushed and screened, the additives (humic acid, biochar, etc.) and binders are mixed uniformly in a horizontal or vertical compost mixer. This ensures even distribution and consistent performance in the final product.

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Adding slow release agent during compost pelleting

En outre, there are also compost pellet machines with spray device. Including a rotary drum granulator and disc pelletizer. They can add slow-release agent while compost granulation. This is suitable for thoese who only need a slow release fertilizer granulator.

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Spraying device on pan granulator for compost fertilizer granulation

water spray design in drum compost pellet machine

Coating slow release agent film

For another, you also can choose to use a rotary drum coater to apply external layers that slow the nutrient release after pelletizing by a compost granulation equipment. If you plan to process the granulated compost fertilizer into slow-release, this method is recommended.

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How long does it take for fertilizer to slow release?

Slow-release fertilizers made from compost typically begin to work within three to ten weeks, as microorganisms break down the nutrients slowly. This gradual process ensures that plants receive a consistent supply of essential nutrients over time. Some slow-release fertilizers can continue to be effective for a few months, and in some cases, up to a year, providing long-term nourishment and reducing the frequency of reapplication. This makes them ideal for maintaining healthy plant growth with minimal effort. Donc, there are many fertilizer manufacturers investing in project to make slow release fertilizer pellets from compost.

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If you want to know more about granulated compost manufacturing solutions and machine, Bienvenue pour nous contacter immédiatement. There are compost granulation plans range from 1 t/h operation to 20 t/h ouput, from cow dung pelleting to mineral waste compost granulation, etc for your choice.