The granulation process of a small-scale chicken manure organic fertilizer production line is a key step in converting pre treated and fermented chicken manure into granular organic fertilizer. This process not only improves the physical properties of chicken manure organic fertilizers, such as ease of storage, transportation, and application, but also ensures the uniform distribution of fertilizer components. The following are the main steps of the granulation process in a small-scale chicken manure organic fertilizer production line:
1. Raw material pretreatment
Before granulation, chicken manure raw materials need to be pre treated, including crushing and mixing. Crushing is the process of crushing fermented chicken manure into small particles to increase its surface area, which is beneficial for the subsequent granulation process. Mixing refers to thoroughly mixing chicken manure with other organic or inorganic materials that may be added, such as straw powder, peat, phosphate powder, etc., to adjust the nutritional composition and physical properties of the fertilizer.
2. Adjust the moisture content
Before granulation, it is necessary to adjust the moisture content of chicken manure to a suitable range for granulation, usually 25% -35%. Excessive or insufficient moisture can affect the granulation effect. Moisture adjustment can be achieved by adding water or drying.
3. Granulation
Granulation is the process of processing pre treated chicken manure raw materials into granules. The granulation equipment commonly used in small-scale chicken manure organic fertilizer production lines includes the following:
Disc granulator: suitable for producing small to medium-sized particles. The raw materials are fed into a rotating disk and form particles under the action of centrifugal and frictional forces.
Drum granulator: suitable for large-scale production. The raw materials form particles inside the rotating drum through physical compression or chemical bonding.
Extrusion granulator: suitable for specific raw materials and particle shapes. The raw materials are extruded into specific shaped particles through the mold of the extruder.
4. Particle size adjustment
After granulation, it is necessary to use a screening machine to screen out particles that do not meet the requirements, such as particles that are too large or too small, to ensure uniform particle size in the final product.
5. Drying and cooling
The pelletized chicken manure organic fertilizer particles may contain a high amount of moisture and need to be dried using a dryer to reduce the moisture content to a suitable level for storage and application. After drying, the fertilizer particles need to be cooled to room temperature to avoid clumping due to high temperatures during storage and transportation.
6. Packaging
Finally, the cooled chicken manure organic fertilizer particles are quantitatively packaged using an automatic weighing and packaging machine, ready for sale or storage.
The granulation process of a small-scale chicken manure organic fertilizer production line converts chicken manure into high-value organic fertilizer through scientific processes and appropriate equipment. This not only solves the problem of chicken manure treatment, but also provides high-quality organic fertilizer sources for agricultural production, promoting sustainable development of agriculture.