The production process of fertilizer granulators is usually divided into two granulation methods: dry granulation and wet granulation.
Dry granulation is suitable for raw materials with low moisture sensitivity, and granules are formed by extruding or pressing dry raw materials; while wet granulation is suitable for raw materials with high viscosity, and granules are formed by adding appropriate amount of water, solvent or adhesive to the raw materials, and then granulating and drying.
Choosing a suitable granulator requires decision-making based on actual production needs, raw material characteristics, product requirements and process conditions. To maximize production efficiency and fertilizer granule quality.
Comparison of dry granulation and wet granulation
Dry granulation
Simple and efficient: The dry granulation process is relatively simple, easy to operate, and has high production efficiency.
Energy saving and environmental protection: No additional water or solvent is required, saving energy and resources, and reducing environmental pollution.
Wide range of application: Applicable to a variety of raw materials, especially for materials with high thermal sensitivity.
Easy to control: It is relatively easy to control moisture during dry granulation and is not affected by factors such as humidity.
Dust problem: Dust is easily generated during dry granulation, which affects the health of operators and requires enhanced safety protection.
Commonly used dry granulators
The material is squeezed by the pressure between the rollers to quickly produce oblate fertilizer particles. It has the advantages of high efficiency, energy saving, and high cost performance. It is widely used in the processing of compound fertilizers, inorganic fertilizers, snow melting agents, bentonite cat litter, graphite and other particles.
Wet granulation
Controllable particle shape: Wet granulation can better control the shape and density of particles and produce uniform particle products.
Strong applicability: Applicable to a variety of raw materials, especially for materials with high viscosity.
Smooth particle surface: Since the surface of the particles is wrapped by liquid during the wet granulation process, the surface of the particles is relatively smooth.
High energy consumption: Wet granulation requires a lot of energy for water evaporation, resulting in energy waste.
Complex process: The process of wet granulation is relatively complex and requires more equipment and control systems.
Hot-selling wet granulator
Especially suitable for coarse fiber materials that are difficult to granulate, such as chicken manure and cow manure.
Unique disc granulation structure, the ball formation rate can reach 95%.
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