NPK fertilizer manufacturing process

In this article,brief introduction of complete equipment and process of compound fertilizer production line of Zhengzhou Huaqiang Heavy Industry Technology Co.Ltd.The npk fertilizer manufacturing process production of compound fertilizer is the general process of compound fertilizer production,which is of great significance for users to incest and fully understand the production of compound fertilizer.

npk fertilizer manufacturing process
The fertilizer manufacturing process of npk,compound fertilizer is roughly as follows:raw material proportioning,mixing,and stirring,agglomeration and crushing,material granulation,primary screening,particle drying,particle cooling,secondary grading of particles,coating of finished particles,quantitative packaging of finished particles,etc.
The following is a detailed introduction to each link of the production process of npk, compound fertilizer and in different producing parts it is equipped with different type fertilizer equipment:
The production process of npk,compound fertilizer includes raw material promoting,mixing,crushing and agglomeration,granulation,primary screening,particle,drying,particle cooling,secondary screening,particle coating of finished products and quantitative packaging of finished products.
NPK fertilizer manufacturing process

1.Raw materia ingredients:generally the raw materials can be the urea,ammonium nitrate,ammonium chloride,ammonium sulfate,potassium chloride and other raw materials can be selected and prepared in a certain proportion.
2.Mixing parts:Minx the prepared raw materials evenly to improve the overall uniform fertilizer efficiency content of the fertilizer particles,and use the horizontal mixer or disc mixer to mix the raw materials.
3.Agglomerate crushing:the raw materials with uniform mixture are crushed to facilitate the subsequent granulation processing,mainly using chain crusher,etc.
4.Material granulation:evenly stirred and crushed materials are sent to the granulator by belt conveyor for fertilizer granulator machine(drum granulator,disc granulator and roller press granulator can be used),which is an essential and most important step in the production process of compound fertilizer.
5.Primary screening:preliminary screening of semi-finished particles.Unqualified particles are returned to the mixing and mining link for reprocessing.Generally,roller screener is used to sceeen the granulator.
6.Particle drying:the particles made by the granulator and screned by the first stage are sent to the dryer to dry the moisture contained in the particles,so as to increase the particle strength and facilitate the storage.Generally,the rotary dryer is used in the fertilizer manufacturing process.Sometimes,the series of fertilizer dryer is also equipped in the organic fertilizer production line.
7.Particle cooling:the dried fertilizer particles are easy to agglomerate due to their high temperature.After cooling,they are easy yo be stored and transported in bags and stored by a cooler.
8.Secondary grading of particles:The cooled particles are graded,the unqualified particles are crushed and regranulated,and the qualified products are screened out,which can be screened by the secondary drum screener machine.
9.Finsihed paticle coating:coating the qualified products to increase the brightness and roundness of the particles,so as to make the appearance more beautiful.Generally,the coating machine is used for coating.
10.Quantitative packaging of finished particles:the coated particles,which is to easy,the finished particles are sent to the silo by the belt conveyor for temporary srotage,and then connected to the electronic quantitative packaging scale,sewing machine and other automatic quantitative packaging and sealing bags,placed in the ventilation place for storage,so as to realize full automation.

Then production process of compound fertilizer is simple,the production process of npk, compound fertilizer production line is small,the floor area is small,the operation is simple,and the technical requirements are not high.

About organic fertilizer granulator machine

As the professional organic fertilizer machine manufacturers,we designed for different type fertilizer machines to e equipped and used to produce the fertilizer.

Producing the organic fertilizer granulator using the complete fertilizer production line,in the fertilizer manufacturing process it is equipped with different series fertilizer machines to finish the production process.When producing the granulator,the organic fertilizer granulator machine is the factor equipment to produce the organic fertilizer granulator.So what type are designed and equipped in the organic fertilizer manufacturing process?

For organic fertilizer granulator experience accumulation,made a significant contribution.The advantages of disc type organic fertilizer granulator,drum type organic fertilizer granulator are simple process,convenient operation,less equioment failure and high output.Organic fertilizer granulator includes flat die granulator machine,ring die organic fertilizer granulator machine,roller press granulator machine,disc organic fertilizer granulator machine,rotary drum granulator machine,and so on.almost including all organic fertilizer granulator except tower granulator,covering the common organic fertilizer granulator in the industry.In fact,for crops,organic fertilizer is the best fertilizer.Such fertilizer production manufacturing process is simple,processing cost is low,harmful ingredients are less,crop absorption is fast.However,with the popularization of mechanical fertilizer application,and the disadvantages of fertilizer transportation,people slowly approach organic fertilizer granulation.Therefore,organic fertilizer machine to be used to produce the organic fertilizer granulator are designed.The traditional organic fertilizer granulator is disc type organic fertilizer granulator,rotary drum granulator machine,which play an important role in the later stage of organic fertilizer granulator.

fertilizer granulator machine

However,these organic fertilizer granulators have the defects of high moisture content,small particle density,high dust content and uneven particle size during processing.Through these defects,people granulally carry out equipment transformation and renewal.Flat die organic fertilizer granulator has the characteristics of large pressure,simple adjustment of ring die pressing wheel gap.large density of pressed particles,low dust content in working environment,low moisture content of particles,easy drying of finished products,etc,but this kind of flat die granulator machine can only press columnar particles.The new type of organic fertilizer can reflect the advantages of the production of organic fertilizer particles,especially spherical particles.The process of high-speed rotation,forced granulation,firction bonding and polishing is basically used to change the traditional granulation process with large investment,complex process and repeated links,and then spherical organic fertilizer particles are generated.

We are as the professional fertilizer machine manufacturers,we are not only design the organic fertilizer granulator machine,we also designed the compound fertilizer production line and the fertilizer granulator machine which are suitable for being used in the npk,compound fertilizer production line.Like the rotary drum granulator machine,roller press granulator machine which using the extrusion method to produce the compound fertilizer granulator.


The rabbit manure organic fertilizer production line

Rabbit manure is a high-quality organic fertilizer. According to statistics, an adult rabbit can accumulate about 100 kg per year, and the manure of 10 adult rabbits is equivalent to the amount of fertilizer in a pig. The content of nitrogen, phosphorus and clock in rabbit feces is higher than that of other livestock. According to tests, the nitrogen content in rabbit manure is about 77 times that of cow dung, 3.8 times which of pig manure, 3.3 times of sheep manure and 1.5 times of chicken manure, and the phosphorus content is 7.7 times that of cow dung. 5.8 times of feces, 4.6 times of sheep manure, 2.9 times of chicken manure; potassium content is 4 times that of cow dung, 2 times of pig manure, 2.7 times of sheep manure, and 1.6 times of chicken manure.

organic fertilizer production line

Rabbit dung, urea in urine, atmosphere, potassium, phosphorus, etc. can be used freshly and can be absorbed and utilized by plants. However, undigested organic matter such as proteins in the feces can be absorbed after being fermented and converted into ammonium ion plants. So what are the rabbit manure organic fertilizer production equipment?

1.The equipment that needs to be configured for the powdery rabbit manure organic fertilizer production line :
Compost turning machine – forklift feeder – new vertical crusher – drum screener – cache silo – powdered organic fertilizer packaging machine

2.The equipment needed to configure the pellet rabbit manure organic fertilizer production line is:
Turning machine – forklift feeder – new vertical pulverizer – drum type sieving machine – dynamic batching machine – double shaft continuous mixer – organic fertilizer granulator – throwing round Machine – dryer – cooler – coating machine – granule packing machine

Because of different equipment configuration schemes, different production line process design, different production requirements, the funds required for the rabbit manure organic fertilizer production line will be different, and the specific equipment quotation depends on the actual configuration. However, it can be confirmed that the configuration is more scientific, more reasonable, and more suitable for actual production. The price investment of equipment will be more cost-effective. If you would like to know more about the rabbit manure organic fertilizer production line, or want to know and purchase a full set of production equipment. Pls contact us.

Similar article about: Chicken manure organic fertilizer production line


Economic Benefit of Producing Slow-acting NPK Complex Fertilizer

Because of the low utilization rate of chemical fertilizer, people try to make a slow-release and high-utilization fertilizer to meet the demand of nitrogen in different growth stages of crops, reduce the loss of nitrogen leaching and volatilization, reduce the fixation of phosphorus and potassium fertilizers in the soil, so that the fertilizer can supply nutrients according to the requirement of crop fertilizer. The available CaO, MgO, SiO 2 and various trace elements in fertilizers are also good soil amendments. The coated NPK fertilizer manufacturing process can produce suitable fertilizer products.


Slow release coated fertilizer manufacturing process

NPK Fertilizer Production Process

According to the sustainable development of agriculture and the demand of improving fertilizer utilization rate, Zhengzhou Tianci Fertilizer Machine Manufacturer has developed a slow-acting, high-utility coated complex fertilizer manufacturing process. The fertilizer manufacturing process is based on the instant granular fertilizer as the core, one or more slow-release plant nutrients as the coating, inorganic acid complex, slow solvent and other binders to wrap water-soluble fertilizer, forming a complex fertilizer with both quick-acting and slow-acting components. We provide fertilizer manufacturing process including fertilizer granulator machine, pulverizer, rotary dryers, coolers, drum screening machines, coating machines, packing machines and other equipment. The whole set of fertilizer production equipment can complete the processing and coating of the particles of the complex fertilizer, so that the fertilizer has high utilization rate in the soil.


Benefits of NPK Fertilizer Production Process

In the process of fertilizer production, the structure and composition of cladding layer can be adjusted to control the release rate of nutrients so as to reduce leaching loss and improve the utilization rate of fertilizers. This fertilizer product not only has the characteristics of slowly releasing nutrients, but also can meet the needs of nutrients for the whole growth period of crops and the ratio of nutrient utilization rate by one basal application. Conventional quick-acting fertilizer increased by 10-30 percentage points, the utilization rate of nitrogen fertilizer could reach 50%-70%, and the amount of fertilizer used could be reduced by 10%-40%. Due to the remarkable economic and social benefits of slow-acting and high-utilization wrapped complex fertilizer, and in line with the direction of fertilizer development, it is worth vigorously promoting.

Processing organic fertilizer by using crop straw

The crop straw organic fertilizer production line advanced composting fermentation process, inoculates high-speed and high-efficiency fermentation bacteria, which makes the straw cellulose rapidly decompose and transform, and all kinds of pathogenic bacteria, weed seeds and aphid eggs are killed, and produce the bio-organic fertilizers with strong stability and full range of nutrient. We combine straw with biological manure and then use organic fertilizer production line equipment for processing. However, the bio-organic fertilizer produced contains a large number of elements such as nitrogen, phosphorus and potassium required for crop growth, and most of them exist in organic form, organic fertilizer. It can not only meet the needs of crop growth, but also improve the ability of crops to adapt to adverse environments.

organic fertilizer production line

In order to use crop straw to produce and process organic fertilizer, the scale of design should be determined according to the yield of straw after crop harvesting and fertilizer requirements, and the total amount of crop straw that can be collected.

Straw organic fertilizer production technology and characteristics:
Modern composting is an improved process based on the traditional composting process. It uses organic fertilizer processing equipment and fermenting bacteria to accelerate the composting speed, improve the nitrogen retention capacity, and further process the organic fertilizer production equipment to make the straw organic.Fertilizer efficiency has improved significantly. Because of its good nitrogen fixation effect and good ammoniation, this fertilizer is accompanied by a variety of complex nitrogen-fixing bacteria, which not only has a significant effect on soil improvement, water retention and fertilizer conservation, but also can be widely used in gardening such as flowers, afforestation, inoculum and protected areas.

The main body of the special straw organic fertilizer production line is compost turning machine and organic fertilizer granulator machine. The feed bin of the reaction chamber receives the crushed material of the crop straw, and is uniformly mixed with the yeast and the appropriate amount of water, and then enters the biological digestion reaction chamber for microbial digestion and nitrogen fixation. Treatment, and then enter the microbial fermentation reaction chamber catalytic fermentation to improve fertilizer efficiency, and finally into the heap tank in the microbial fermentation discharge port to be decomposed.

The technology of crop straw composting bio-organic fertilizer is an improved version of the composting production process. The corn straw after harvesting is microbial degraded, fermented and decomposed, and organic fertilizer is prepared by batching, by optimizing the specific environment of the microbial strain. After fermentation, it can be further dried and pulverized as needed, and then the fertilizer granulator machine is used to convert the material into qualified organic fertilizer granule raw materials.

Some knowledge about bio-organic fertilizer

How to make bio organic fertilizer? What raw materials are included in the biofertilizer project? Let us know some relevant knowledge.

bio organic fertilizer production line

(1) There are many raw materials for the production of bio-organic fertilizers, which can be divided into the following categories:
1. Agricultural waste: such as straw, soybean meal, cotton aphid and so on.
2. Livestock and poultry manure: such as chicken manure, cattle and sheep horse dung, rabbit dung;
3. industrial waste: such as distiller’s grains, vinegar grains, cassava residue, sugar residue, furfural residue, etc;
4. the dregs of life: such as kitchen waste, etc.;
5. urban sludge: such as river silt, sewer sludge and so on.

(2) Characteristics of bio-organic fertilizer
Eco-organic fertilizers have complete nutrients and can improve soil and improve soil compaction caused by the use of chemical fertilizers. Improve soil physical and chemical properties, and enhance soil water retention, fertilizer retention, and fertilizer supply. The beneficial microorganisms in the bio-organic fertilizer enter the soil and form a mutual symbiotic relationship with the microorganisms in the soil, inhibit the growth of harmful bacteria and transform them into beneficial bacteria, interact and promote each other, and play a synergistic role of the group.

(3) Organic fertilizer raw materials are common
China has a vast territory, a large population, and abundant organic fertilizer resources. It can be said that there are agriculture, animal husbandry, and where there are organic fertilizer raw materials. Bio-organic fertilizer, as a natural green fertilizer, will serve the vast agricultural production.
Equipment features: The produced particles are spherical by using fertilizer granulator machine, the organic content can be as high as 100% to achieve pure organic granulation. The organic particles can be inlaid with each other under a certain force, and no binder is needed for granulation. The particles are solid and can be sieved after granulation to reduce the boring energy consumption. The organic matter after fermentation does not need to be boring, and the moisture content of the raw material can be 20-40%.

(4) Advantages of bio-organic fertilizer
1. There is a kind of organisms and enzymes in organic fertilizer granulation, which can enhance the biological and enzymatic activities of the soil, increase the nutrient content of the soil, and improve the PH of the soil, so that the soil can be suitable for various agricultural growth.
2. The organic fertilizer produced by the organic fertilizer granulator is highly nutritious. If it is put on average, at least 100 days without adding other fertilizers, this effect cannot be replaced by any fertilizer.
3. The organic fertilizer granulator can add anti-pest and disease drugs during production to increase disease and pest damage.
4. The organic fertilizer granulator produces organic fertilizer nutrients, and in addition to the three nutrients of nitrogen, phosphorus and potassium, there are rich calcium, magnesium and silicon, etc., which modify the soil composition and is conducive to crop growth.

You can see another article about biofertilizer project:Bio-organic fertilizer production line

Main Granulating Methods of NPK Compound Fertilizer Production

NPK fertilizer can supply many kinds of nutrients needed by crops at the same time. The economic benefit is obvious. The production cost can be reduced by using compound fertilizer.

Compound fertilizer is not easy to agglomerate, easy to store and use, and is widely welcomed. How to select granulator for NPK fertilizer production line? Several main granulation methods are introduced here.


  1. Solid aggregate method

The basic monomer fertilizers such as urea, ammonium nitrate, ammonium chloride, ammonium sulfate, monoammonium phosphate, diammonium phosphate and potassium chloride are used as raw materials. After crushing to a certain fineness, the materials are agglomerated and granulated in a disc fertilizer granulator (or rotary drum granulator) by adding water and heating. NPK compound fertilizer products can be obtained by drying, cooling and sieving granules, which is also one of the widely used methods in the world.

This method has a wide range of raw materials, simple processing process, less investment, low production cost, flexibility, and raw materials are solid. Because it is a secondary process of basic fertilizer, there is almost no environmental pollution problem.


  1. Bulk blending method

According to the requirement of nutrient distribution ratio, mixed fertilizers with uniform nutrient distribution were prepared from various solid basic fertilizers of nitrogen, phosphorus and potassium without obvious chemical reaction, with basically identical granularity and roundness. The process of this method is simple and the investment cost is low, mainly use bulk blending mixer. It is a very practical and easy to promote method.

Bulk blending fertilizer has comprehensive nutrients, high concentration and flexible formula. It can be flexibly changed according to the different conditions of crop nutrition, soil fertility and yield level. The method is simple in processing, low in production cost and pollution-free.


  1. Extrusion method

Extrusion granulation is a dry granulation process in which solid materials are agglomerated by external pressure. Double roller press granulator is mainly used for granulation. The machine have two shaft with one fixed and the other can move, which can adjust the distance between the two shafts. And the granules will be extrude between the shafts.

Double Roller Press Granulator

Extrusion method of NPK fertilizer production has the following advantages:

(1) Drying and cooling processes are generally not needed in the production process, which can save investment and energy consumption.

(2) The operation is simple and there is no three wastes discharged during production.

(3) High-concentration compound fertilizer with lower concentration than general compound fertilizer can be produced. Organic fertilizer and other nutrients can also be added in production according to need. The production capacity of a single extruder is small. If large-scale production is needed, it can be combined with multiple units for factory production.

Chicken manure organic fertilizer production line

Chicken manure organic fertilizer production line processing commodity organic fertilizer requires two steps: the early stage of the fermentation and processing parts and processing granulation. Biological organic fertilizer equipment need double pile fermentation, organic fertilizer granulator, horizontal mixer, disc granulating, rotary drum dryer, cooling machine, screening machine, coating machine, packing machine and conveyor equipment.

chicken manure organic fertilizer production line

Firstly, the feature of the chicken manure organic fertilizer production line:

1, Organic fertilizer of chicken feces does not contain any chemical composition, as a result of chicken digest ability is poor, can use up the nutrition composition of 25% only, and the other 75% nutrition composition in feed follows excrement and urine reduction, make dry finished product contains nitrogen, phosphor, potassium, organic matter, amino acid, protein to wait for composition thereby.

2,The main material is organic matter in manure, organic fertilizer and manure, organic manure increased the soil organic matter content, organic matter can improve soil physical, chemical and biological characteristics, curing soil, improving soil fertility. China’s rural “by dung breeding, seedling by dung long” the proverb, to a certain extent, reflects the manure, organic fertilizer to improve soil.

3,Chicken manure fertilizer increased a lot of organic colloid, both at the same time with the aid of the role of microbes convert many organic matter decomposition to organic colloid, this greatly increased the soil adsorption on the surface, and produce many adhesive material, make consolidation of soil particles into a stable granular structure, improve the performance of the soil water, fertilizer and air permeability, and the ability to adjust the soil temperature.

Then, the feature of the organic fertilizer production line:

It need not to use the bucket elevator, bucket elevator while modelling beautiful, cover an area of an area small, but easy to damage to particles, and easy to jam, difficult to clean, high failure rate, height space is large. This process all use belt conveyor transportation equipment and large dip Angle belt conveyor, this not only ensure the fluency of conveying system, protect the grain, and reduced the plant height, reducing the infrastructure investment. The granulation method is disc granulation, which has wide adaptability to raw materials, large output and improved product appearance quality.


Lastly,the horizontal grinder is used in the mixing and crushing process. The horizontal grinder can not only crush the large particles in the raw materials to improve the pelletization rate of the system, but also fully mix the materials again. Granulation in the production of organic fertilizer granulation way choice is very important. In the current industry mainly include disk, drum, extrusion, such as a variety of ways; these methods have their advantages and disadvantages. The advantage of granulating disc is uniform granule, stable performance and long service life and can produce organic fertilizer and fertilizer can produce inorganic and organic inorganic compound fertilizer, the technology choice granulating disc.


Potassium chloride production process by disc granulator machine

In the production of potassium chloride granular fertilizer, fertilizer granulator can be used to granulate powder. The particles produced by disc granulator are spherical and have good strength, which can be widely used in agricultural production.


Disc Pan Granulator

In the granulation process of disc pan granulator, it is necessary to add a binder to make the granules shape. Binder can be compounded by common inorganic minerals in a certain proportion. Binder has synergistic effect when potassium chloride is pelleted. The effect of pelletizing rate and particle strength is good when the binder is used for pelletizing. Potassium chloride was granulated by disc pan granulator machine, and the granules were spherical.

Pan Granulator NPK Fertilizer Production Line

NPK Fertilizer Production Line

NPK fertilizer production line deals with potassium chloride fertilizer. First, all raw materials are mixed by the batching system, and the material is crushed by chain mill to the appropriate size. The disc granulator makes the powder into granules. After drying and cooling, the granules of potassium chloride are coated with protective film by the fertilizer coating machine to complete the granular processing of potassium chloride.


When applying potassium chloride, attention should be paid to the appropriate period of potassium application. Generally, the application period of potassium fertilizer should be early or not late, and should be used as base fertilizer and early recovery period. When the application amount of potassium fertilizer is less, it can be used as base fertilizer once, and when the application amount of potassium fertilizer is more or the soil texture is lighter, the application effect is better divided into base fertilizer and topdressing fertilizer. Soil nutrients and fertilization status should also be taken into account in determining the suitable application period of potassium fertilizer. In severe potassium deficiency soils, all potassium fertilizers should be used as base fertilizers in medium soil potassium supply, and suitable organic fertilizers should be applied as base fertilizers, combined with topdressing.


Note the method of application of potassium chloride. The concentrated application of potassium fertilizer is beneficial to improve its utilization rate and obtain better results. However, it is not advisable to have direct contact with seeds or seedlings. For general crops, a combination of soil fertilization and foliar fertilization can be used.

How to Make Organic Fertilizer by Feces Composting

Fecal composting organic fertilizer manufacturing process is to adjust the carbon-nitrogen ratio in the manure of the livestock and poultry by turning machine, manually controlling the conditions of water, temperature, pH and the like, and treating the manure of the livestock and poultry by the fermentation of the microorganisms to produce organic fertilizer.


I. Major organic fertilizer production equipmentfor composting

The composting process requires a large number of organic fertilizer processing equipment.

(1). Pre-treatment equipment: mainly include stockyard, unloading platform, feeding door, loading machinery, transport machinery and so on.

(2). Composting equipment: mainly trough compost turning machine, windrow turner machine, fermentation tank.

(3). Fertilizer granulator machine : mainly drum granulator, disc granulator, flat-die extrusion pelleting machine, organic fertilizer granulator, ring-die pelleting machine.

(4). Screening and packaging equipment: mainly drum screener, fertilizer packing machine.

organic fertilizer production equipment


II. Main Technical Parameters of composting

(1). C/N ratio: C/N balance of compost mixture is the key factor for microorganisms to achieve better biological activity. The C/N ratio of compost mixture should be kept at 25-35:1.


(2). Humidity: Aerobic composting should generally be maintained at 40-70%.


(3). Acidity and alkalinity: Acidity and alkalinity vary with the types of compost mixtures and different stages of composting process. Normally, they need not be regulated. If they need to be regulated, they can be regulated by adding alkaline or acidic substances to the mixture before the beginning of composting degradation.


(4). Other design parameters: Rectangular fermentation stacking composting mode, the windrow turner should be used regularly to turn the pile, so that the temperature is kept below 75℃, and the turning frequency is 2-10 days/time. The width and depth of rectangular stacks are limited only by the overturning equipment. The stacks are generally 1.2-1.8 meters deep and 1.8-3 meters wide. The height of the compost is usually 2.5-4.5 meters, and the width is usually twice the depth. Fermentation tank composting, need to build fermentation tank, fermentation tank length is unlimited.


III. Matters needing attention in composting

(1). Composting time: Composting time varies with C/N ratio, humidity, weather conditions, type of composting operation and management, waste and additives. The composting time of well-managed strip-cutting fermentation compost in summer is generally 14-30 days.

(2). Temperature: We should pay attention to the monitoring of composting temperature. The composting temperature should exceed 55℃, so as to be conducive to microbial fermentation and kill pathogens.

(3). Humidity: Pay attention to monitoring the humidity of compost mixture periodically. Excessive or low humidity will reduce or stop the composting speed.

(4). Odor: Odor is a good indicator of composting operation stage. Decay odor may mean that compost is changed from aerobic to anaerobic.