There are three kinds of relatively mature fertilizer granulation machines in organic fertilizer production line, which are double roller granulator, disc granulator and stirring tooth granulator.

The double roller granulator is a dry granulator, and the particles are in a relatively uniform oblate shape. The subsequent process does not require drying equipment. The price is also a cheaper model. The double roller granulator is generally suitable for the granulation of compound fertilizers (including organic fertilizer, inorganic fertilizer, organic fertilizer, magnetic fertilizer, etc.). The ball formation rate is about 85%, and it is formed by two roller skins. The granulation shape is generally oblate. If it is an inorganic fertilizer, a pair-roll extrusion granulator is generally selected. Disc granulator is cheap, the diameter is different, and the price is different. Customers usually choose disc granulator when buying, because the investment is small, cost saving, quick effect, and the ball rate of disc granulator is average It is about 85%, but the purchase of a disc fertilizer granulation machine generally requires a dryer to dry the organic fertilizer, which is equivalent to the secondary shaping.

Stirring tooth granulator is widely used in the granulation of organic fertilizer. Due to its high balling rate, stable operation, sturdy and durable equipment, and long service life, it is chosen by customers as the ideal equipment. It mainly uses the high-speed rotating mechanical stirring force and the resulting aerodynamic force to realize the process of mixing, pelletizing, spheroidizing, and densification of the fine powder in the machine, so as to achieve the purpose of granulation. Its large production capacity can reach 4-6 tons per hour, and the small one can reach 1.5-2 tons per hour.