Animal manure is a high-quality organic fertilizer raw material, rich in various essential nutrients such as nitrogen, phosphorus, and potassium for plants. After appropriate treatment, it can be converted into efficient organic fertilizers. Based on the characteristics of animal feces, the following types of organic fertilizer granulators are more suitable:
1. Disc granulator
Features: The disc granulator uses centrifugal force to roll and aggregate materials into balls, making it suitable for processing materials with certain viscosity. Animal feces have a certain viscosity under appropriate humidity, so this device can form uniform particles very well.
Advantages: High granulation rate, regular particle shape, easy operation, and easy mastery.
Working principle: Utilizing the rotation of the drum to move the animal material, combined with appropriate humidity and mechanical force to help form particles.
Applicable scenarios: Suitable for handling animal feces with high moisture content. By adjusting the structure and tilt angle inside the drum, the particle size and hardness can be well controlled.
3. Extrusion granulator
Characteristic: By forcefully compressing the material into a specific shaped orifice plate, fixed diameter particles are formed.
Advantages: It is particularly suitable for handling dry or low moisture animal feces, producing particles that are compact, not easily broken, and easy to transport and store over long distances.
4. spray drying granulator
Working principle: Suitable for spraying liquid or paste like materials into hot air, forming particles through rapid evaporation of water.
Applicability: For animal feces with high water content, especially liquid livestock feces, the particles obtained by the spray drying granulation mechanism are fine and have good instant solubility.
Comprehensive consideration of factors
Raw material characteristics: Consider the specific type of manure (different types of poultry and livestock have different manure characteristics), initial moisture content, organic matter composition, etc.
Production objective: expected particle size, shape, hardness, bulk density, etc.
Production scale: Select suitable equipment models and automation levels based on production demand.
Cost budget: including equipment purchase costs, operating expenses (electricity, labor), maintenance costs, etc.
Environmental requirements: Is it necessary to have supporting exhaust gas and wastewater treatment systems.
Choose Suggestions
For most small and medium-sized animal manure treatment projects, disc granulators are widely popular due to their simple operation and low cost.
For large-scale breeding farms or those pursuing high precision and large-scale production, rotary drum granulators or extrusion granulators can be considered. Although these equipment require higher initial investment, they have more advantages in continuous production.
It is particularly important to note that regardless of the equipment used, fecal fermentation and pretreatment are crucial preliminary processes that directly affect granulation efficiency and product quality.
In summary, selecting suitable organic fertilizer granulation equipment requires comprehensive judgment from multiple dimensions such as raw material characteristics, production needs, and cost control to ensure that the final product can meet market requirements while achieving good economic and social benefits.
