NPK fertilizer production line – fertilizer production line

How to improve the pelletizing rate of NPK fertilizer production

Written by fertilizer production line on December 3rd, 2019.

NPK compound fertilizer is characterized by simple composition, high nutrient content, low dosage, quick fertilizer effect, convenient application, transportation and storage, and rapid improvement of yield and quality. In order to produce large quantities of high-quality compound fertilizer, the first step is to produce good fertilizer granules.

The main factors influencing NPK fertilizer production line are as follows:

Production equipment;
Process technology;
Physical and chemical properties of raw materials;
Production formula and added conditioner;
Air temperature and air volume at the outlet of the dryer;
Temperature and liquid phase quantity of granulating materials;
Material flow;
Material return ratio;
Quality of operators;
Climatic conditions.

Only by integrating the above factors into making fertilizer granules, can we produce NPK fertilizer with high yield and good quality, one of which is indispensable.

NPK fertilizer production line

1. Improving the performance of NPK fertilizer production equipment is the basis

Choose qualified production equipment, choose well-equipped, complete test means, reliable product quality manufacturers, under the guidance of experienced personnel to buy, late equipment management and maintenance personnel to have a certain professional level. Zhengzhou Huaqiang Co.Ltd are leading agricultural fertilizer machine manufacturer in China. We has strong technical strength in fertilizer machines. All of our products comply with international quality standards and greatly appreciated in a variety of different markets throught the world.

2. Choosing ammonium phosphate with good viscosity as raw material is the premise

The pelletization of NPK fertilizer mainly depends on the viscosity of ammonium phosphate and conditioner, and the poor viscosity of ammonium phosphate directly affects the pelletization rate of compound fertilizer. Therefore, when purchasing ammonium phosphate, we should consider not only nutrient content and price, but also its viscosity. From the actual production experience, the viscosity of diammonium phosphate is better than that of monoammonium phosphate.

3. Ensuring the fineness of raw materials and feedbacks is essential

The finer the powder of the raw material, the better the viscosity of the material, the more important it is to improve the efficiency of the crusher

Chain crusher to help make the big granules into the fine powder and get back to fertilizer granulator machine. It is simple and compact in structure, cover small area, easy maintenance such characters, crushing effect is good, smooth operation, easy to clean.

4. Material mixing is an important measure to improve the NPK fertilizer production line efficiency

The material is mixed evenly, on the one hand, the mixer mixes the fresh material evenly, on the other hand, the mixer combines the returned material and the fresh material evenly. Because the fine powder in the returned material is mostly potassium and nitrogen with poor viscosity, it is the material that is least likely to form into a ball, while the fresh material has better viscosity and is easy to form into a large ball in production. Mix the two thoroughly to prevent the formation of large balls and too much powder.

5. Suitable moisture and pelletizing temperature are the key

Only when the temperature and water content of granulating materials are adjusted to the optimal point can the granulation area be ensured to be normal.

The disc fertilizer granulator is suitable for the production with small yield, and the rotary drum granulator is suitable for the mass production of NPK fertilizer. Addition of moisture during granulation requires certain experience of operators.

6. Suitable air volume and stable furnace temperature are the preconditions

The size of the air volume directly affects the drying effect, the air volume in the dryer, the drying effect is good. If the air volume is too large, it is easy to extract the powder in the simplified body, and the wind speed should be less than 2m/s. Best cooling head end temperature difference is about 100℃, the import and export temperature cannot frequent adjustment. When urea is used as nitrogen source, the temperature should be determined according to the amount of urea. The more urea is used, the lower the drying operation temperature will be.

NPK fertilizer manufacturing production process

Written by fertilizer production line on November 26th, 2019.

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.
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.

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.

npk fertilizer manufacturing process
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.

Production process of potassium chloride by disc granulator machine

Written by fertilizer production line on November 26th, 2019.

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.

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.

Disc Granulator NPK Fertilizer Production Line

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.

The working principle of the disc granulator in the fertilizer production line

Written by fertilizer production line on November 21st, 2019.

The disc granulator machine is mainly used in the NPK fertilizer production line and organic fertilizer production line to produce various granular products; it’s also used in pharmaceutical products, fertilizers, feeds, etc. Adopting the overall arc structure, the granulation rate can reach above 93%. The granulation tray has three discharge ports, which facilitates intermittent production operations, greatly reduces labor intensity and improves labor efficiency.

disc granulator machine

Disc fertilizer granulator machine working principle:
The raw meal powder is uniformly wetted by the atomized water in the mixer to form a spherical core having a uniform particle size, and then fed into a ball plate for ball formation. The moisture of the ball should be controlled at 12-14%. Most of the water should be added in the twin-shaft mixer. Only a small amount of supplementary water is added to the ball plate, and the amount of water added is controlled to be about 0 to 3%. The dry powder granulation is directly added to the ball-forming plate, and the proper amount of water is sprayed. The raw material nucleus enters the spherical disk and is subjected to centrifugal force, friction and gravity in the disk, and moves along the parabola. Due to the cohesiveness and plasticity of the material, the cores are bonded to each other and gradually grow up during the movement. When the inclination angle of the ball disc, the height of the disc edge, the rotation speed and the moisture are constant, the balls of different particle sizes roll downward from the edge of the disc at different disengagement angles due to different gravity. During the continuous rolling process, the ball continuously discharges the water in the ball out of the surface. Due to the cohesiveness of the material and the natural volatilization of the surface liquid film, the ball has certain strength, and then the disk is rotated with the tilting of the disk. The sides are discharged out of the pan.

Disc granulator performance advantages:
1. The raw materials are suitable for a wide range of applications. They can be used for granulation of various raw materials such as compound fertilizer, medicine, chemical feed, coal, metallurgy, etc., and can produce various concentrations and various types (including organic fertilizer, inorganic fertilizer, and magnetic fertilizer etc.) of compound fertilizer.
2. The disc granulator is light in weight, low in height, and flexible in process;
3. The machine has simple structure, convenient adjustment and superior performance.
4. The use of unique unpowered combination scraper integration reduces auxiliary power consumption.

5, high ball formation rate, large rounded particle strength, intuitive operation, easy maintenance and so on.

Fertilizer granulator machine is the core equipment for fertilizer manufacturing process. As one of leading fertilizer machine manufacturers in China, in addition to the disc granulator, we also produce other types of fertilizer granulator machines, and other equipment such as compost turning machines, mixer machine, crusher machine, etc.