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Granular bio-organic fertilizer production process

The livestock manure and the ingredients, the bacteria and the like are sent to the mixing machine in a predetermined ratio, stirred and mixed to be uniform, and transported to the fermentation bed (tank or strip or tank) by a conveyor or a forklift. The fermentation bed is fully fermented, then pulverized and loosened by a pulverizer, and then sent to the stacking field for secondary aging to increase the activity, and then sorted to remove impurities, and then processed into bio organic fertilizer granules through deep processing granulation.

The characteristics of the process flow of the granular bio-organic fertilizer equipment:
(1) Using the equipment and technology to process livestock and poultry manure, which is not subject to seasonal restrictions and low management costs;
(2) Livestock and poultry manure passes through the equipment and immediately turns into aerobic fermentation;
(3) Make full use of resources, “turn waste into treasure”, produce organic fertilizer without odor, and it is harmless treatment;
(4) The manure of livestock and poultry is processed from organic fertilizer to organic fertilizer, which takes only about 10 days, and the production cycle of organic fertilizer is short;
(5) Simple operation and convenient management.

The granulation methods on the granular bio-organic fertilizer process mainly include agglomeration method, shotcreting method and extrusion method. According to the structure of the granulator, the pellet method is divided into disc granulation and drum granulation; according to the position of the pressure roller (or die hole), the extrusion method is divided into roll extrusion granulation and flat die extrusion. Press granulation and ring die extrusion granulation.
1. Disc granulation. Disc granulation is currently the most used granulation method in China. The disc granulator has the following characteristics: it has a good classification function and generates less coarse particles, so the granulation rate is more than 90%, but the material fineness and uniformity are required to be high.
2. Drum granulation. The drum granulation relies on the temperature to increase the amount of liquid in the granulated material, which promotes the granulation of the material at a lower water content, which is convenient for drying and saves energy. The granulation rate of the drum is low (4% to 60%), and the amount of returning is large.
3. Extrusion granulation. Extrusion is a volumetric compression process. There is no temperature rise in the whole process, no need to dry, and work is convenient. The extrusion granulator has a high granulation rate (close to 100%), high particle strength, basically no return, and the grain shape is not smooth.
4. High-efficiency new type of granulation method for organic fertilizer. The granulation equipment was developed in recent years, mainly for pelletizing granulation of organic materials. The advantage of the process is that it breaks the shape and hardness of the organic material after granulation. The organic matter that needs to be granulated after fermentation does not need to be dried, and the spherical granules with certain firmness can be directly produced without adding a binder, and there is no special organic matter. A spherical organic granular fertilizer can be produced upon request. It may be fermented chicken manure, pig manure, cow dung, rice straw, various slag, agricultural and urban organic solid waste, etc., or N, P, K may be added to make organic-inorganic compound fertilizer according to requirements. It is the ideal equipment for organic fertilizer granulation.