The main granulator in the fertilizer production line is a new type organic fertilizer granulator. The high-speed rotary mechanical stirring force and the resulting aerodynamic force make the fine powdery material Continuous mixing, granulation, spheroidization, compaction and so on, are carried out in the machine to achieve the purpose of granulation. It is most suitable for direct granulation after fermentation of organic fertilizer, which saves the drying process and greatly reduces the manufacturing cost. Now this new type fertilizer granulation equipment popular among the users.

The main granulating equipment in this production line are: mixer, new organic fertilizer granulator, screener, dryer and cooler, coating machine, packaging machine and other supporting equipment.
Advantages of the new type organic fertilizer production line:
1．High granulation rate, organic content up to 100%, achieving pure organic granulation.
2．Compact structure and low energy consumption.
3．Simple operation and saving labor costs.
4．High production capacity, low investment, low cost, high yield.

Nowadays, the requirement of wastewater treatment in aquaculture farms is more detailed. How to adopt more effective treatment methods in large, medium and small farms has become a hot topic of people, especially how to choose economical and affordable organic fertilizer production line for small farms has become the focus of the factory owners.
The small-scale organic fertilizer production line is easy to install and debug. The necessary fertilizer equipment is semi-wet material crusher, screening machine, packaging machine, which saves time, labor and space.

Half-wet material crusher has a large grinding force, which can meet the requirements of granulation. Customers can also adjust the grinding granularity according to the actual situation. It can be widely used in grinding hard materials such as glass, ceramics, bricks, gravel and so on. It is an ideal machine for fertilizer production and processing. 
The screening machine is a drum screening machine with many features such as high screening efficiency, low noise, small dust emission, long service life, small maintenance and convenient maintenance.

1. The components of the new equipment have not been run-in yet, and there may be Karton. When the operator first uses the equipment, he needs to raise the temperature. First, he needs to raise the temperature to pull the motor triangle belt by hand until he is comfortable. Then he can connect and pull the motor 8-10 times according to the normal working options and gradually raise the temperature, which takes about 40-50 minutes.
2. In addition to the preliminary temperature regulation, the organic fertilizer equipment needs to continue to heat up and supplement heat after starting up. At the same time, according to the different nature of the material, it should be adjusted to different temperatures.
3. When the bearings at both ends of the main engine bearing room are hot or noisy, stop the machine for maintenance and add butter. When working normally, the bearing room is every 5-6 days. Add butter once.
4. Pay attention to find out the operating rules of the machine; for example, the machine temperature is high or low, the speed is fast or slow, and can be handled in time according to the situation.
5. When the fuselage of the organic fertilizer granulator is unstable, attention should be paid to check whether the gap between the coupling and the anastomosis is too tight, and to adjust and loosen it in time.
6. When the machine stops, the operator should completely cut off the power supply and remove the parts of the machine head with wrench, and wait for the next time to preheat separately before use.

1. Organic fertilizer raw materials are mixed, the C/N ratio is controlled at 23-28, and the moisture content is controlled at 52-68%.
2. Material heap temperature began to rise, indicating that fermentation began, the temperature rose to more than 60 degrees, and began to turn over after 48 hours. (But when the temperature exceeded 70 degrees, it must turn over immediately.) When turning over, it must be even and thorough, turning low-level materials into the upper and middle parts of the heap as far as possible, so as to fully mature, depending on the degree of material maturity to determine the number of turning over. This can be used in compost machine.
3. After fermentation and decomposition, the organic fertilizer is crushed and stirred into powder, which is packaged and stored.
Production process of powdered organic fertilizer: The whole production line has high production efficiency and stable equipment operation. The equipment is connected by belt conveyor from forklift hopper – organic fertilizer crusher – screening machine – automatic packaging weighing.
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drum granulation is to add nitrogen fertilizer, phosphate fertilizer and potash fertilizer to the filling material, then stir evenly, and roll into granular fertilizer inside the drum, which belongs to a way of physical synthesis. This fertilizer granulation process is relatively simple and can produce products of various specifications, but nutrient mixing is not uniform enough, water solubility and utilization rate are low, and easy to lose.

Using high tower granulation compound fertilizer, nutrient is relatively uniform, each particle nutrient is basically the same, and can make the nutrient release evenly, can significantly improve the absorption and utilization rate of fertilizer, and fertilizer efficiency is the most easily dissolved in compound fertilizer, the most suitable for top dressing. However, the nitrogen content and phosphorus content of fertilizers processed by high tower granulation should not be low and high, usually the highest phosphorus content can only be maintained at about 15%. Therefore, this technology can only produce high nitrogen compound fertilizer. In addition, there is a big drawback to this processing technology. The fertilizer produced by this NPK fertilizer manufacturing process has a high content of two urea, which is close to the highest limit of the national regulation (1.5%).

The organic fertilizer production line from livestock and poultry manure through aerobic composting can not only solve the non-point source pollution problem, but also promote the development of ecological recycling agriculture and efficient animal husbandry. The whole process can be divided into three parts: pretreatment of raw materials, aerobic fermentation and granulation.

1. The pretreatment of raw materials includes solid-liquid separation, excipient crushing, water content and C/N ratio of raw materials. The pH is worth adjusting.
2. Aerobic fermentation includes flipping, ventilation and other measures, which can supplement oxygen, control temperature, release moisture and restore porosity of raw materials.
3. Organic fertilizer granulation is a systematic project, which is centered on pelletizing. Organic fertilizer granulation molding is a systematic project, which is built around granulation molding, with processes such as pulverization, mixing, and batching in the front, followed by drying, cooling, sieving, etc.

Fermentation methods of livestock and poultry manure include stacking fermentation, tank fermentation and tower heating fermentation. Strip stacking fermentation is the most original fermentation method. It has long fermentation cycle, general effect and large area, but its production process is simple and its cost is low. Tank fermentation has strong controllability, can effectively shorten the fermentation cycle, fermentation effect is good, but the cost of soil construction is relatively high, equipment often needs customization, installation costs are high and so on. The sealing performance of tower heating fermentation is stable, movable, and the fermentation effect is good. The fermentation period is generally about one week, but the equipment investment is high.
Fermentation compost equipment mainly refers to trough type dumper. The general trough flipper is equipped with a machine with multiple troughs. The transfer of the flipper between fermentation tanks can be realized by a transfer machine. The trough flipper is mainly composed of frame, flipping device, walking mechanism, cable winding device, electronic control system, etc. It is mainly driven by electric power. The trough fermentation system has the advantages of small land occupation, high compost depth (0.8-2.5m), fast heating and large processing capacity, and is widely used at home and abroad. It is the main organic fertilizer equipment for livestock manure composting. In the process of tank fermentation, it can maintain and ensure the alternating state of medium temperature – high temperature – medium temperature – high temperature, and effectively shorten the fermentation period. A device for adding bacteria was installed on the flipper, which can spray alcohol evenly and proportionally during the fermentation process. At the same time, ventilation pipes can be laid at the bottom of the groove, and ventilation capacity can be increased. The trough dumper is suitable for fine and large-scale production, which is conducive to production management and production cost control. Produced products with high efficiency, stable and reliable operation, durable, even turning, by the market praise of the turning machine.

Granulation is a unique link between China and Europe and the United States. Granular fertilizer has good commodity properties, and it will not be automatically graded in storage and transportation. It has slow release property and can create aggregate structure for the soil. At present, the main methods of organic fertilizer granulation in the market are extrusion granulation and agglomeration granulation. The commonly used equipment for extrusion granulation is roller extrusion granulator, which is widely used in organic fertilizer granulator. It belongs to extrusion slip model and can continuously produce one roll forming. Material is added from the feeding hopper, extruded by roll, demoulded and pelletized, then transferred to the screen to screen and separate the finished particles, and then returned to mix with the new material, and then granulated. In addition, extrusion granulation equipment also has flat-die pelletizer and ring-die pelletizer. The commonly used equipment for agglomeration granulation is disc granulator and drum granulator. Disc granulator is a kind of mature organic fertilizer equipment. The angle of the granulating disc adopts body arc structure. The material entering the disc is made of atomizing nozzle, spraying appropriate amount of liquids, and then rotated by the granulating disc to produce granulated products, forming a certain amount of inertia after rotating with the disc. Rotary drum granulator has a special structure inside the simplex. The material to be granulated is rotated through the rotary motion of the simplex to produce rolling rotation in the cylinder. The ball is bonded to form a ball at a certain humidity and temperature to complete the ball-making.

Granulation is a major technical problem in the organic fertilizer production line, as is fermentation. Fermentation of organic fertilizer starter refers to the transformation of organic matter into organic fertilizer that can be directly utilized by plants through microbial metabolism, temperature generation and mineralization of organic matter and humification.

Fertilizer fermentation process can be divided into the following six parts：

1. Material Ratio: Feces are mixed with other organic substances in a certain proportion.
2. Water regulation. The moisture content of fermentation materials should be controlled between 50% and 60%. The easiest way is to grasp a handful of fermentation materials by hand. Watermarks can be seen on the fingertips without dripping water. It is appropriate to loosen the hands and disperse them. If the juice can be extruded and not dispersed on the ground, the water content is more than 75%. Too dry and too wet is not conducive to fermentation, so it should be adjusted.
3. Material stacking. It can’t be too small or too short to build a reactor. Too small will affect fermentation. Flat-top trapezoidal reactor is 1.2 m to 1.5 m in height, 2-2.5 m in width and 2-4 m in length. The fermentation effect is the best.
4. Start-up temperature. Start-up temperature should be better than 15 degrees Celsius (composting can be done in all seasons, not affected by seasonal climate temperature in the north and south, fermentation should be done indoors or in greenhouses in winter, and startup fermentation should be carried out in alpine areas according to the guidance of technicians).
5. Flip heap ventilation. Fermentation process should pay attention to proper oxygen supply and dump. When the fermentation compost is too large, it needs to be matched with organic fertilizer compost machine to save manpower. When the temperature rises to above 60-70 degrees, it should be turned over in time, usually 2-3 times. The temperature should be controlled at about 65 degrees. The high temperature has an effect on nutrients.
6. Fermentation is completed. Generally, after 48 hours of material fermentation, the temperature rises to 50-60 degrees. On the third day, the temperature can reach 65 degrees or more. Under this high temperature, the heap should be turned over once. Under the general sweetheart, the high temperature of 65 degrees or more will be seen twice in the fermentation process, and the fermentation can be completed 2-3 times. Normally, the fermentation can be completed within 10 days.