NPK fertilizer production process

NPK fertilizer is the chemical fertilizer. In NPK fertilizer, the content of nitrogen phosphorus and kalium elements is high. Compared with organic fertilizers, NPK fertilizers are fast-effective. In modern agriculture, NPK fertilizers are absolutely necessary nutrients. Therefore, the future of NPK fertilizer industry is promising. In general, there are two NPK fertilizer processing methods for making NPK fertilizers. The first method is to granulate NPK powdery fertilizer materials into granules. The another method is to blend different ready-made N-fertilizer pellets, P-fertilizer pellets and K-fertilizer pellets. According to these two NPK fertilizer production process, Shunxin experts has designed two types of NPK compound fertilizer production lines: NPK fertilizer granulating lines and NPK fertilizer blending lines.

A NPK fertilizer granulating line consists of crusher machine, fertilizer mixer, granulator, screening machine, fertilizer coating machine and automatic fertilizer packing machine. Compared with NPK fertilizer granulating lines, the NPK fertilizer blending lines are fairly simple. Generally, a NPK fertilizer blending line includes automatic batching machine, BB fertilizer mixer, storage hopper and fertilizer packing machine.

NPK fertilizer production process
NPK fertilizer production process


What raw materials you should prepare for NPK fertilizer granules production industry?

We have mentioned that there are two different NPK fertilizer production processes. For NPK fertilizer granulating lines, you need to prepare some chemical powdery materials. For NPK fertilizer blending lines, you must use different NPK fertilizer pellets as the materials. In the following content, Shunxin will introduce the raw materials of the these two different NPK fertilizer production processes respectively.

Raw materials for NPK fertilizer granulating line

The NPK fertilizer is made from powdery chemical materials that contain nitrogen, phosphate and potassium elements. In common, you can use urea, ammonium chloride, calcium nitrate, ammonium sulfate as nitrogen source. What’s more, monoammonium phosphate, diammonium phosphate, calcium magnesium phosphate and triple suprphosphate are often used to provide phosphate elements. In addition, the potassium source for NPK fertilizer include potassium chloride, kainite, potassium sulfate, etc…

Raw materials for NPK fertilizer blending line

The materials for NPK fertilizer blending lines are some different pellet fertilizers. They mainly include monoammonium phosphate pellet(MAP), diammonium phosphate pellet(DAP), potassium sulphate pellet, potassium chloride pellet, urea fertilizer pellet, ammonium chloride pellet, ammonium sulfate pellet, bentonite pellet and so on. The fertilizer formula of NPK fertilizer blending lines is adjustable. Therefore, if you want to invest in NPK fertilizer industry, you can do a research on the soil constituents of your local place.

NPK fertilizer granules blending line
NPK fertilizer granules blending line


How to make NPK fertilizer by using fertilizer machines for efficient production?

Honestly speaking, it is up to what kinds of raw materials you are going to use. The NPK fertilizer production technologies of NPK fertilizer granulating line and NPK fertilizer blending line are totally different.

Manufacturing process of NPK fertilizer granulating line

The first step is to crush the materials into fine powder which can be used for granulation process. After this process, if you want to make more nutrient NPK fertilizers, you can use a batching machine to add some microelements into the powder material. Then the batched material should be evenly mixed in a fertilizer mixing machine. Next, it comes the most important part of the whole production line: granulating process.

The quality of powder material and the quality of the fertilizer granulator you use will greatly affect granulation result. So, you should choose high-quality granulator for your fertilizer plant. It is not the final step when you get finished NPK fertilizer pellet. In order to store the fertilizer pellets for long time, the finished pellets will go through drying process, cooling process and coating process. When all these work is done, you can get the completely finished fertilizer pellets. Then you can pack the fertilizer pellets and sell it.

To sum up, the granulating fertilizer production line goes: Crushing→batching→mixing→granulating→screening→drying→cooling→coating→packing. While, if you use the roller type granulation machine for making powdery NPK fertilizer into granules. It is not necessary for you to dry and cool the pelleted fertilizers.

double roller type dry NPK fertilizer granulation line
double roller type dry NPK fertilizer granulation line


Manufacturing process of NPK fertilizer blending line

Actually, we also call NPK fertilizer blending line as BB fertilizer production line. This is nearly the simplest fertilizer production line. The first step is batching fertilizer pellets with automatic batching machine. In order to get evenly-mixed NPK fertilizer pellets, you need a specialized BB fertilizer mixer. After being mixed, the complex fertilizer pellets will be stored in the storage hopper temporarily. You should place the automatic fertilizer packing machine under the storage hopper. When the fertilizer pellets come out of the storage hopper, they will be packed into bags immediately.

To be short, the blending fertilizer production line goes: Batching→mixing→temporarily storing→packing

NPK fertilizer blending line
NPK fertilizer blending line


Fertilizer production machines for NPK fertilizer production process

Manufacturing NPK fertilizers granules, there are various equipment configurations for your reference. Whether for your NPK granulation line or the blending line, we have different equipment for you to choose. Here you can know them better.

NPK fertilizer machines for granulating method

For making powdery NPK compound fertilizers into granules, here Shunxin recommends you whole set of equipment for NPK fertilizer powder to granules making line for your reference. It mainly includes 3 steps: preparations before granulating, granulating and granulated NPK fertilizer processing.

  • For the preparations, you can use the fertilizer crushing machine and batching equipment. These two equipment can help you make fine NPK fertilizer powder and batch them well. And then what you need is a mixing equipment for blending these batched powdery NPK fertilizers evenly.
  • Fertilizer granulators are the core equipment for this fertilizer production line. Shunxin has three kinds of granulators for it. They are pan granulator, double roller granulator and rotary drum granulating machine.
  • After the granulating, you can get well granulated NPK fertilizers. Generally, it is necessary for you to use the drying and cooling equipment for making the fertilizer granules more convenient for transporting and storing. Meanwhile, for your commercial fertilizer production plant, you can use the bagging equipment for pack the fertilizer products efficiently.
NPK fertilizer granulation process
NPK fertilizer granulation process


NPK fertilizer machines for blending method

BB fertilizer production line only require 3 fertilizer making machines. It uses fertilizers granules as materials for blending. Shunxin will show them to you in the following content.

Manufacturing NPK fertilizer granules by blending method, you also need batching machine for batching the different fertilizer granules. And then utilizing an BB fertilizer granules blending equipment. This type of fertilizer mixers can blend the NPK fertilizer efficiently. And after the blending, you can pack them directly. For you information, because of the large amount of mixed NPK fertilizer granules, it will be better for you to set a storing bucket for storing the granules temporarily before packing equipment.

Notice: In both NPK fertilizer granulating line and NPK fertilizer blending line, apart from the above mentioned machines, you will also need conveyor to connect two neighboring fertilizer machines.

What NPK granulator machine you can use for NPK fertilizer granules production line?

Manufacturing NPK fertilizer granules, there are various fertilizer granulation machines for your reference. Whether you want to use the dry or wet granulation technology for pelletizing, we can meet you needs. The drum type and pan granulators employ wet granulation method for granulating your NPK fertilizers. And the fertilizer roller compactor machine takes advantages of extrusion force for making the NPK fertilizer powder into granular.

Drum type NPK fertilizer granulator for large scale fertilizer production

The rotating drum granulation machine has large output. It is often used for pelletizing NPK compound fertilizers. This machine utilizes rotating cylinder for turning your powdery NPK fertilizers into granules. Meanwhile, you can also add some vapour into it when granulating. Compared with other granulators, the rotating drum NPK fertilizer pelletizer has the largest production capacity. It can process 20 ton NPK fertilizers per hour. You can use it for your large scale NPK compound fertilizer granulation line.

Rotary Drum Fertilizer Pelletizer
Rotary Drum Fertilizer Pelletizer

Rotary Drum Fertilizer Pelletizer

Model: SXZGZ-1870

Power: 15kw

Diameter: 1800mm

Installation Angel: 2°-5°

Rotary Speed: 11.5(r/min)

Capacity: 5-8t/h

Pan NPK fertilizer granulation equipment

Pan fertilizer granulator is popular in NPK fertilizer making plant. This machine is economic for your NPK fertilizer granules production. It utilizes the rotating pan for granulating. There are various specifications with different production capacities, sizes and prices for you to choose.

Dry type roller press granulating machine for NPK fertilizer granules making

For your dry NPK fertilizer powder granulating, there are dry NPK fertilizer press granulation machine for your reference. It uses advanced dry granulation technology for pressing the fertilizer powder into granules. If the moisture content of your powdery NPK fertilizer is about 5%, this granulation machine is a good choice.

Pan type NPK fertilizer granulation equipment
Pan type NPK fertilizer granulation equipment

Dry type roller press NPK fertilizer granules pelletizer
Dry type roller press NPK fertilizer granules pelletizer


Equipment recommendations for you to make the NPK fertilizer granulating effects better

Turning NPK fertilizer powder to granules, it is efficient for you to equip with some machines for improving the fertilizer effects. Except for the granulating machine, there are also some recommended equipment for your reference. These machines can help you prepare high quality powdery fertilizers for NPK fertilizer granulating. Meanwhile, there are also processing machines for you to further process the granulated NPK fertilizers better.

Batching equipment for batching the NPK fertilizer powders

The batching equipment is mainly used for batching the different powdery materials in proportion. We have automatic static and dynamic batching machines for your reference. It is applicable for you to choose according to your own NPK fertilizer making requirements. Meanwhile, if your N,P,K fertilizer materials are pellets, you had better use our fertilizer grinder for making them into fine powder respectively, then batch them.

Vertical NPK fertilizer powder grinding machine
Vertical NPK fertilizer powder grinding machine

NPK fertilizer powder batching machine
NPK fertilizer powder batching machine


Fertilizer mixer for blending the batched NPK fertilizer powders evenly

After the batching, you should use the fertilizer powder mixing machine. Shunxin has various blending equipment for your NPK fertilizer powder mixing. According to your production capacity, there are single shaft and double shafts fertilizer blenders for you to choose. Besides, we also have vertical and horizontal fertilizer mixing equipment. They can mix your powdery NPK fertilizer materials evenly and efficiently for better granulating effects.

New Type Vertical NPK fertilizer mixing equipment
New Type Vertical NPK fertilizer mixing equipment


Drying and cooling machine

Generally, if you use the wet granulation method for granulating NPK fertilizers, the granulated fertilizers will be wet. It is not convenient for transporting and storing. Drying them directly will be helpful. While, for your large scale NPK fertilizer granules making, Shunxin provides you rotating drum drying and cooling machines. The drying machine can lower the moisture content of NPK fertilizer granules. And the cooling machine is aimed to lower the temperature of dried fertilizer pellets. For your information, using double roller granulation machine for NPK fertilizer pelletizing, it is not necessary for you to equip with the drying and cooling equipment.

NPK fertilizer granules drying machine
NPK fertilizer granules drying machine

fertilizer cooler for NPK fertilizer granules processing
fertilizer cooler for NPK fertilizer granules processing


Fertilizer screener equipment and coating machine for high quality NPK fertilizer granules classifying

Making commercial NPK fertilizer pellets, the fertilizer granules should be uniform. Shunxin fertilizer screening machine can classify the fertilizers into powders, granules. Meanwhile, if the fertilizer granules are too big, this machine can also select them out and then re-crush and re-granulate them. If you want to make the NPK fertilizer granules have better appearance and nutritive, the fertilizer coating equipment will be helpful.

NPK fertilizer granules screener equipment
NPK fertilizer granules screener equipment

fertilizer coating machine for NPK fertilizer granules making line
fertilizer coating machine for NPK fertilizer granules making line


Single bucket fertilizer granules packaging scale

Packing is the final step of fertilizer manufacturing processes. Shunxin recommends single bucket granular fertilizer bagging equipment for you. It employs advanced technology for weighing and packing the NPK fertilizers efficiently with high accuracy. Besides, if you want to improve the packing efficiency, you can choose the double buckets fertilizer packing machine for higher efficiency.

Single bucket fertilizer granules packaging scale
Single bucket fertilizer granules packaging scale


Cost of setting up a NPK fertilizer plant

How much will it cost to establish a NPK fertilizer plant? Honestly speaking, it’s too complex to answer this question, because we do not know what a NPK fertilizer plant you want to build. Though we can not know the specific expense for setting up a NPK fertilizer plant, we can analyse which aspects you should consider about investing a fertilizer plant.

There are mainly three aspects. Firstly, it is the rent of your factory. Secondly, you also need consider the salary of the working men. Third, you should prepare money for NPK fertilizer equipment. For the last aspect, Shunxin can supply all kinds of NPK fertilizer making machines at factory prices.
Except factory-price fertilizer facilities, Shunxin will also provide you high-quality pre-sale service and after-sale service. If you want to invest in NPK fertilizer industry, we are willing to provide professional suggestion for you.

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