Processing NPK fertilizer with rotary drum granulator to improve nutrient utilization efficiency

In the design of the internal structure of the rotary drum granulator, the function of various internal scrapers is to maintain a certain thickness of the material on the inner surface of the drum, make the material layer uniform, and facilitate the normal rolling and turning of the material in the drum. The steel drum is lined with thermally expandable metal. Rubber baffles and linings, as well as external shock absorbers, are used to prevent accumulation during the drum pelletizing process. The stable material volume and uniform liquid phase distribution in the rotary drum granulator are the key to producing qualified granules.

Clogging is one of the common failures of the grinder in the manufacturing of npk fertilizer. There may be problems with the machine design, but more are caused by improper use of the shredder.

(1) The feed rate is too fast and the load increases, causing the fertilizer crusher to block. During the feeding process of the organic fertilizer production line, you should always pay attention to the large deflection angle of the ammeter pointer. If it exceeds the rated current, it indicates that the motor is overloaded, and the motor will be burned out for a long time.

When this happens, you should immediately reduce or close the material door, or you can change the way of feeding, and control the amount of feed by increasing the feeder. There are two types of feeders: manual and automatic. The user should choose the appropriate feeder according to the actual situation.

Due to the high speed of the crusher, the large load, and the strong fluctuation of the load. Therefore, the current of the crusher is generally controlled at about 85% of the rated current.

(2) The outlet pipe is not smooth or the feeding is too fast, which will block the air outlet of the pulverizer. Improper matching with conveying equipment will cause the outlet pipe to be blocked after the air is weakened or no air. After the fault is found out, the feed port should be cleared first, the mismatched conveying equipment should be changed, and the feed volume should be adjusted to suit the processing of NPK fertilizer granulator, so as to make the equipment operate normally.

(3) Hammer fragments, aging, closed or broken screen holes, and too high water content of the crushed materials will block the crusher. The broken and severely aged hammers should be updated regularly, the crusher should be kept in good working condition, and the screen should be checked regularly. The moisture content of crushed materials should be less than 14%. This can not only improve the production efficiency, but also make the crusher not blocked, and enhance the reliability of the crusher.

Equipment functions and characteristics of pig manure composting fermentation flipping machine

Pig manure composting fermentation turning machine is of great significance to improving the agricultural production model, building the integration of planting and breeding, the development of breeding cycle, and changing the breeding environment! In the production of pig manure organic fertilizer fermentation, the fermentation compost turning machine is an essential fermentation equipment.

The fermentation turner machine can mix the fermentation materials evenly, increase the oxygen content in the material pile, and promote the organic fertilizer fermentation process. The traditional composting method takes several months to complete the fermentation and composting. The modern organic fertilizer manufacturing process uses turning equipment, which only takes 7 to 15 days to complete the decomposing. The pig manure composting fermentation and composting machine plays an important role in this process.

Introduction of pig manure composting fermentation turner machine

Pig manure compost turning machine is a special equipment for the treatment of solid organic waste and the realization of aerobic high temperature composting. It is the main machine of composting and fermentation pool. By using this equipment, continuous production can be realized, the composting materials can be fully supplied with oxygen, the fermentation is uniform, and part of the water can be discharged, so as to achieve the goal of harmless and resource utilization. The decomposed compost is suitable for the manufacturing of NPK fertilizer and the deep processing of organic compound fertilizer.

Functions of pig manure composting fermentation turner:

1. Pig manure compost turning machine can achieve automatic control, according to different needs can have corresponding measures, for our work has brought great convenience, convenient for our operation.

2. Compost fermentation turner machine has excellent hydraulic lifting system, so it can be operated well in the process of use.

3. The components of pig manure compost turning machine are very strong and durable. In the process of use, it can better crush the materials, improve the production efficiency and speed up the crushing degree of materials.

How to determine if an organic fertilizer granulator is suitable for oneself

To determine whether an organic fertilizer granulator is suitable for oneself, one can consider the following aspects:

Raw material characteristics:

Select an organic fertilizer granulator that can adapt to the physical and chemical properties of the raw materials to be processed, such as cow manure, pig manure, chicken manure, etc. For example, for raw materials with high moisture content, an organic fertilizer granulator that can effectively control moisture should be selected.

Production demand:

Select the appropriate capacity of organic fertilizer granulator based on the production scale (small-scale family farm, medium scale farm, or large-scale industrial production) and expected output. Small scale production may be suitable for small granulators, while large-scale production requires large and efficient granulation equipment.

Operational convenience:

Choose an organic fertilizer granulator that is easy to operate and maintain to reduce the training costs and daily maintenance workload for operators. A highly automated granulator can significantly improve production efficiency.

Energy consumption:

Considering the energy consumption of the granulator, choose equipment with high energy efficiency to reduce long-term operating costs.

Product quality:

Select an organic fertilizer granulator that meets the required quality standards for organic fertilizer products, such as particle size, density, moisture content, etc.

Environmental regulations:

Ensure that the selected granulator complies with local environmental regulations, does not produce harmful gases or discharge wastewater, and adheres to the principles of sustainable development.

after-sale service:

Choose a manufacturer that provides excellent after-sales service so that you can receive timely technical support and repair services in case of equipment problems.

Budget limitations:

Based on the investment budget, weigh the price and performance of the organic fertilizer granulator and choose equipment with high cost-effectiveness.

Future expansion possibilities:

Considering possible future production expansion needs, choose an organic fertilizer granulator with upgradable or expandable functions to adapt to larger production volumes during business growth.

Through the above comprehensive evaluation, it can be determined which organic fertilizer granulator is most suitable for your specific needs and conditions. In the decision-making process, it is possible to have in-depth communication with the granulator supplier to understand the detailed performance parameters and applicable scope of the equipment, in order to help you make more informed choices.

Deodorization methods in the granulation process of organic fertilizer production line

Organic fertilizer production line is used to produce organic fertilizer, organic waste, sludge, straw, sawdust, food processing waste and other materials accumulated in a place for a long time, will produce a variety of odor. These wastes are processed by organic fertilizer manufacturing process, and become valuable organic fertilizer, contributing to the agricultural cause.

In the manufacturing of NPK fertilizer, fertilizer plants often carry out secondary granulation. The application of organic-inorganic compound fertilizer not only controls the balanced supply of nutrients, but also controls the stable release of nutrients. It plays a role of balanced fertilization in both horizontal and vertical directions of nutrients, and can improve the utilization rate of nutrients. Granular fertilizer treated by rotary granulator is better than inorganic fertilizer in comprehensive utilization of nutrients.

How does the organic fertilizer equipment deodorize these organic wastes? Here is a brief introduction.

There are many ways to eliminate odor, such as 1. Adsorption method; 2. Air dilution method; 3. Ozone oxidation method; 4. Masking method; 5. Chemical treatment method; 6. Water washing method; 7. Combustion method; and plasma and biological deodorization method.

The above methods are all one of the deodorization methods in the organic fertilizer manufacturing process. The methods used in each organic fertilizer production line are different, and each method has its own deodorization method and system. In the process of producing organic fertilizer, it is necessary to use compost turning machine for fermentation treatment, so that these materials can get rid of odor and harmful substances through deodorization system. Therefore, the deodorization system of organic fertilizer production line is an indispensable detail.

Advantages of composting and flipping machine for livestock and poultry manure fermentation

 The manure produced by farm-raised livestock and poultry can be made into organic fertilizer to bring certain additional economic value, and the compost turning machine can realize the efficient fermentation of manure and organic fertilizer.

So what benefits can be achieved by using livestock manure composting equipment. First of all, after a series of processes of the equipment, the feces are separated and processed, and finally organic fertilizer is formed.

Secondly, compost can be used for planting flowers, fruits and vegetables, crops, or directly applied to the field after fermentation, which helps to improve the soil environment and promote the development of ecological agriculture.

The farm will organically combine breeding and planting, and do three-dimensional breeding, recycling breeding and ecological breeding. Generally, 5 pigs (1 cow, 5 sheep and 50 chickens) can be consumed per mu of field. According to this plan, we can deal with the feces and solve the pollution problem.

In addition to the benefits achieved, our livestock and poultry manure composting and throwing equipment is manufactured by combining the requirements of harmlessness and resource utilization. It is suitable for organic fertilizer and NPK fertilizer manufacturing process. It has complete functions and good equipment quality.

How to choose the appropriate organic fertilizer granulator for different types of feces

When choosing a suitable organic fertilizer granulator, it should be determined based on the characteristics of different feces. Here are some common types of feces and corresponding recommendations for selecting organic fertilizer granulators:

Cow manure:

Cow manure has a moderate moisture content and high organic matter content, making it suitable for granulation treatment using a wet granulation machine.

The fiber content of cow manure is relatively high, and a wet organic fertilizer granulator with crushing function can be selected to improve the shaping effect of particles.

Chicken manure:

Chicken manure has a high moisture content and abundant organic matter, making it suitable for use with wet or semi dry granulators.

Due to the high viscosity of chicken manure, it may be necessary to add an appropriate amount of desiccant or conditioner to adjust its moisture and adhesion.

Pig manure:

Pig manure has a high moisture content and abundant organic matter, making it suitable for granulation treatment using a wet granulation machine.

Pig manure has strong adhesion and may require the addition of an appropriate amount of desiccant or conditioner to reduce its viscosity and facilitate granulation.

Sheep manure:

Sheep manure has a moderate moisture content and high organic matter content, making it suitable for granulation treatment using a wet granulation machine.

The fiber content of sheep manure is relatively low, and a wet granulation machine without crushing function can be chosen to reduce the damage to the fibers.

Rabbit feces:

Rabbit manure has a low moisture content and rich organic matter content, making it suitable for granulation treatment using a dry granulation machine.

The particle size of rabbit manure is relatively small, and a dry granulation machine with strong particle size adjustment function can be selected to achieve the desired particle size.

Other animal manure:

For other types of animal manure, such as pigeon manure, goose manure, etc., a suitable granulator should be selected based on their specific physical and chemical characteristics.

Generally speaking, these feces can also be processed using wet or dry granulation machines, but may require appropriate adjustments based on their characteristics.

When choosing an organic fertilizer granulator, in addition to considering the characteristics of the manure, factors such as production scale, investment budget, and energy consumption should also be taken into account. At the same time, in order to ensure the granulation effect and product quality, it is recommended to conduct sufficient testing and evaluation before purchasing.

The advantages of using a double shaft mixer for granulation in fertilizer production lines

The double shaft mixer specially designed and produced by our factory is a new type of equipment based on the original mixer. The mixer is mainly used in organic fertilizers, NPK fertilizer manufacturing process and dust collectors in thermal power plants. It can also be used in chemical metallurgy, mining, building materials and other industries.

The newly produced double shaft mixer has the characteristics of high mixing efficiency and less floor space. The spiral blade (mixing blade) is made of high wear-resistant special alloy or composite ceramic, which has long service life.


Structural advantages of double shaft mixing machine

1. The shell of double shaft mixer is mainly composed of plate and section steel. It is welded in the factory and assembled with other parts, which is the support of double shaft mixer. The shell is tightly sealed, and there will be no fly ash floating and leakage.

2. The water-adding and humidifying piping is mainly composed of pipes, joints and nozzles. The nozzle adopts a stainless steel atomizing cone nozzle, which is arranged above the inside of the casing of the double-shaft mixer, and is arranged axially along the spiral axis to form a water curtain to facilitate the humidification and mixing of the material. The nozzle structure is simple, easy to replace, stainless steel material, anti-corrosion and durable. The moisture content of wet ash can be adjusted by operating the manual regulating valve on the water supply pipeline of the twin-shaft mixer.

3. There are six inspection holes on both sides of the double-shaft mixer to facilitate the operator’s usual inspection and maintenance. The materials fully mixed by the mixer can directly enter the rotary drum granulator for granulation.

4.Spiral shaft is the main component of double shaft mixer, which mainly includes left and right spiral shaft, bearing seat, bearing sleeve, bearing cover, gear, sprocket, oil cup, blade and other parts. The left-right spiral shaft requires high manufacturing accuracy and good process performance, and has strict matching requirements with bearing seat, bearing sleeve and bearing cover. Gear, sprocket are protected by protective cover, can be safe and effective operation.

The oil cup of double shaft mixer is press fit type, which is convenient and effective to fill lubricating oil. The material of the blades of the double shaft mixer is the composite ceramic which is wear-resistant and not easy to stick ash. The blade structure design is reasonable and simple, easy to replace after wear, and has long service life in the organic fertilizer manufacturing process.

Organic fertilizer turning machine is the fermentation choice for organic fertilizer producers

Can manure straw be used as organic fertilizer if it is not decomposed? The answer must be “no”. Only when the manure is completely decomposed by compost turning machine, and then made into organic fertilizer, the seedlings will not burn and rot. Most of the diseases and insect pests were killed by high temperature fertilizer.

Fermentation turner is the best choice for organic fertilizer manufacturers. After harmless treatment by organic fertilizer manufacturing process, organic fertilizer eliminates harmful bacteria and insect eggs, decomposes and transforms organic protein in a short period of time, has no odor, and commercial fertilizer is easy to transport. However, the general self-made fertilizer has the characteristics of long stacking time, low harmless degree, large amount of harmful bacteria, viruses, insect eggs and weed seeds, easy to burn roots and seedlings, and can not be sold as commercial fertilizer. Therefore, organic fertilizer manufacturers will purchase fermentation and compost turner machines to process farm manure.


Fermentation turner is an important link in the production process of organic fertilizer. Farmyard manure fermented by trough dumper is a kind of organic fertilizer with rich nutrient content. It has both a large amount of organic matter and high content of three elements. nutrient. The organic matter content is 25.5 percent, nitrogen is 1.63 percent, phosphorus is 1.54 percent, and potassium is 0.85 percent. Our hot-selling trough compost turning machine adopts track-type walking, so that the turning and throwing production process has good reliability, and the energy consumption is reduced. The matching trough changer can double the output, increase economic income and reduce equipment investment.

Our factory provides NPK fertilizer manufacturing process, organic fertilizer production equipment, we produce a wide range of fermentation compost turning machine models, according to the user’s fermentation tank width size custom turner machine.

What are the different effects of different organic fertilizer granulators on the use of pig manure fertilizer

The effectiveness of pig manure fertilizer is influenced by the granulation process of organic fertilizer granulators, mainly reflected in the following aspects:

Fertilizer release rate:

The pig manure fertilizer produced by wet organic fertilizer granulators usually has a slower release rate of fertilizer efficiency because the addition of water helps to maintain the stability of nutrients in the fertilizer. This is beneficial for long-term crop growth and soil improvement.

The pig manure fertilizer produced by dry granulation has a fast release rate of fertilizer efficiency, which is suitable for the short-term rapid growth needs of crops, but may require more frequent application.

Nutrient utilization efficiency:

Wet granulation, due to its slow fertilizer release characteristics, helps to improve nutrient utilization and reduce nutrient loss, especially for nutrients such as nitrogen and phosphorus.

Dry granulation may lead to rapid loss of some nutrients due to the rapid release of fertilizer efficiency, especially under rainwater erosion, and may need to be used in conjunction with soil water and fertilizer conservation measures.

Soil environmental impact:

Wet granulation may generate a certain amount of wastewater and exhaust gas, which, if not treated properly, may cause pollution to the soil and surrounding environment.

The impact of dry granulation on soil environment is relatively small, but dust may be generated during the production process, and appropriate dust prevention measures need to be taken.

Convenience of application:

The pig manure fertilizer produced by wet granulation has a larger volume and heavier weight, making it less convenient to transport and apply than dry granulation, especially in large-scale agricultural operations.

The pig manure fertilizer produced by dry granulation has a small volume, light weight, and is easy to transport and apply, especially in manual application or small-scale mechanical operations.

economic performance:

The production cost of wet granulation is relatively high, including energy and raw material consumption, but due to its high fertilizer efficiency utilization and long fertilizer duration, it may have good economic benefits in the long run.

The production cost of dry granulation is relatively low, but due to its rapid fertilizer release and possible nutrient loss, it may require more application times, thereby increasing long-term costs.

When choosing the organic fertilizer granulator process for pig manure fertilizer, factors such as crop growth needs, soil conditions, environmental protection requirements, and economic benefits should be comprehensively considered to select the most suitable process for local agricultural production conditions.

Advantages of Solid Liquid Separators in Fecal Organic Fertilizer Production Lines

 The solid-liquid separator is widely used in the industrial field. It is widely used in the fecal treatment in the early stage of the organic fertilizer production line, which is recognized by everyone. This is inseparable from the advantages of the equipment itself. Next, we will introduce the performance advantages of the solid-liquid separator for fecal sewage.

1. Full automaticity

The equipment is equipped with a non clogging submerged pump to pump the cow manure and pig manure water into the solid-liquid separator, and then the water is gradually pushed to the front of the machine by the auger. At the same time, the pressure of the front edge of the machine is continuously increased, forcing the water in the material to extrude out of the screen and flow out of the drainage pipe.
2. Continuity

The work of the solid-liquid separator is continuous. The cow dung / pig dung water is continuously lifted into the solid-liquid separation body, and the pressure of the leading edge is constantly increased. When it reaches a certain extent, the discharge port is pushed open and extruded to achieve the purpose of extrusion discharge.
3. Convenience

In order to master the discharging speed and water content, the counterweight under the main engine can be adjusted to achieve a satisfactory and appropriate discharging state. If too much cow dung water / pig dung water is pumped in, it will be discharged to the original cow dung / pig dung pool through the overflow pipe. The cow dung wastewater separated by spiral extrusion filtration can be directly sent to the biogas digester for biogas fermentation or to the wastewater sedimentation tank.
4. Environmental protection

Dry cow manure/pig manure is squeezed out from the discharge port. After solid-liquid separation, the COD and BOD in the manure water are greatly reduced, which is convenient for subsequent discharge up to standards. The separated manure and sewage can be directly discharged to the biogas digester for biogas fermentation. The fermented manure liquid is a very good organic fertilizer liquid, and can also be discharged to the biogas digester for environmental protection treatment. The remaining manure residue can be fermented into organic fertilizer by compost turning machine.