When selecting a granulator for a compound fertilizer production line, considering factors such as raw material characteristics, production requirements, and economic costs, the following types of granulators are often recommended for use in compound fertilizer production due to their respective advantages:
Advantages:
Suitable for dry or slightly damp raw materials, especially suitable for processing NPK compound fertilizers.
Can produce high-strength and wear-resistant particles, reducing crushing losses during transportation.
Relatively low cost and low energy consumption.
2. Rotary disc granulator
Advantages:
Suitable for processing raw materials containing viscosity, especially for producing spherical particles.
Easy to adjust particle size, control particle size by changing disc speed and water spray rate.
The structure is simple and easy to maintain.
3. Fluidized bed granulator
Advantages:
Suitable for materials with high moisture content, it can be granulated while drying, simplifying the production process.
The particles are uniform, the internal structure is tight, and the stability is good.
Capable of handling fine powders and preventing their aggregation.
4. Rotary drum granulator
Advantages:
Suitable for mass production, high production capacity, and suitable for industrial large-scale operations.
Particle size can be controlled by adjusting the speed and tilt angle.
Capable of processing various raw materials, including wet and dry processes.
5. spray drying granulator
Advantages:
Specially suitable for granulation of liquid raw materials or slurries, quickly drying and completing granulation in one step.
The obtained particles have good fluidity and solubility.
Reduce intermediate processing steps and improve production efficiency.
Choose Suggestions
For projects that pursue low cost and low energy consumption, a roller extrusion granulator is a good choice.
If the goal is to produce high-quality spherical particles, a rotary disc granulator or fluidized bed granulator may be a better solution.
Under high-capacity production, the rotary drum granulator provides excellent efficiency and productivity.
When the water content of raw materials is high or the drying and granulation need to be completed in one step, the spray drying granulator is the ideal choice.
Each type of granulator has its unique advantages and limitations, and the optimal choice depends on specific production needs, raw material characteristics, and expected finished product properties. It is recommended to consult a professional equipment supplier for a comprehensive feasibility analysis and technical evaluation before making a choice.
