Fertilizer Machine Manufacturer Introduces How to Produce Compound Fertilizer Granules

The common granulation processes of compound fertilizer include tower granulation, rotary drum granulation (NPK fertilizer production line), spray granulation and so on. As fertilizer machine manufacturer, let’s introduce these production processes from the perspective of fertilizer production.

 

  1. High tower granulation process is mainly used for the production of high concentration nitro compound fertilizer. It can directly use concentrated ammonium nitrate solution, eliminating the links of spraying granulation, and granular compound fertilizer eliminates the process of crushing operation. At the same time, the compound fertilizer granules produced by the high tower granulation process are very uniform, the qualified rate is very high, the quality is good, easy to dissolve, and the caking phenomenon will not occur.

 

  1. Rotary drum granulator has little restriction on compound fertilizer formulation, high production yield, low investment and construction speed. It is favored by investors of small and medium-sized compound fertilizer plants and widely used in compound fertilizer production. The complete drum granulation process is a NPK compound fertilizer production line, which includes fertilizer granulator, automatic batching system, mixer, crusher, drum dryer, drum cooler, coating machine, packaging machine and other equipment.

NPK compound fertilizer production line

 

  1. The spray granulation process adopts the slurry method. The slurry is sprayed into the equipment by heating and pumping, so that the moisture in the slurry is vaporized and separated, and the retained solid forms a granular compound fertilizer. This kind of process is widely used in large-scale compound fertilizer production. Its advantages are that it can be used to produce NPK compound fertilizer, and can also be used to produce ammonium phosphate compound fertilizer. At the same time, it has less energy consumption, large production scale and low production cost. The quality and strength of the products are very good.

 

Tianci fertilizer machine manufacturer with many years of experience. The drum granulation NPK compound fertilizer production line is our main equipment product. Among the equipment sold, it is highly praised by many fertilizer factories internationally.

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

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.

Other article for your reference:Chicken manure organic fertilizer production line

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.

Organic fertilizer production process and equipment

Bio-organic fertilizer refers to a kind of fertilizer with microbial fertilizer and organic fertilizer effect, which is composed of animal manure as the main raw material, inoculated with microbial compound microbial agent, fermented and decomposed to completely kill pathogens, insects and eggs, etc. Biofertilizers generally contain a large number of elements such as nitrogen, phosphorus and potassium, and trace elements such as calcium, magnesium, sulfur, iron and boron, as well as a large number of organic and humic acid substances, so that the fertilizer supply is balanced. The bio-organic fertilizer production line processes the fermented materials into the final organic fertilizer.

 

Raw materials for organic fertilizer production equipment

The main raw materials for biofertilizer production are livestock manure, crop straw and other agricultural wastes.

 

Mixed ingredients for organic fertilizer production

The source of raw materials, fermentation methods and equipment are different, and the ingredients are different. The specific formula depends on the source of organic materials. The general principle of proportioning is that the content of organic matter in the total material should be more than 30% (50% – 70% is the best), the ratio of carbon to nitrogen (15:1) – (20:1), the pH value should be 6-7.5, the moisture content should be about 50%, and the water content should be adjusted to 50% – 70% when inoculated.

 

Fermented maturity

It can be stacked flat or fermented in a fermentation tank. Fermentation tanks are usually placed in closed or semi-closed fermentation chambers. The effect is better than that on flat ground. It needs to be turned periodically by the fertilizer turner machine every three days. After 25-30 days of fermentation, the temperature gradually decreases from 70-80℃ to stable, and the decomposition is completed.

 

Organic fertilizer production equipment and process flow

Crushing and mixing pretreatment

Crushing equipment: Half-wet Material Crusher

The machine is mainly used to crush materials of biological fermentation organic fertilizer with moisture of 25%~50%. Crushing granule size meets the requirements of granulation, and also adjusted based on user need within a certain range. Have good effect on grinding the glass brick, ceramics and broken stone such kinds of hard matter from the city life garbage organic fertilizer.

Mixing equipment: Horizontal Mixer

The mixer machine is mainly used for mixing raw material in batches, material can be fully mixed. High mixing rate, less residual suitable for feed, concentrated feed, premix additives mixing.

 

Granulating equipment

After composting, the materials need to be granulated so that they have a certain strength and shape before they can be used as organic fertilizer. Granulation is a key step in bio-organic fertilizer production. There are many kinds of granulator for biofertilizer. According to the structure of granulator, the aggregate method can be divided into disc granulator, drum granulator, new type organic fertilizer granulator. According to the position of pressing roller, the extrusion method can be divided into double roller press granulator, flat-die granulator and ring-die granulator.

Disc Fertilizer Granulator: Disc granulator is widely used, less coarse particles are generated, the granulation rate is greater than 90%, but the powder fineness requirements are high.

disc granulator organic fertilizer production equipment

Rotary Drum Granulator: It is suitable for hot and cold granulation and high, medium and low concentrations of mass production of compound fertilizer.

New Type Organic Fertilizer Granulator: It is used for making granulation of organic matter after fermentation, is the newest technology products by our years of research experience.

Fertilizer Roller Extrusion Granulator: Roller granulator machine have two shaft with one fixed and the other can move, which can adjust the distance between the two shafts.the materials will be extrude between the shafts. Materials are granulated at room temperature, and there is no drying process, more energy-saving and cost-reducing.

Flat Die Pelleting Machine: It no need to dry and crush the raw materials before granulation. It can direct burdening to work out cylindrical grain, and save a lot of energy.

 

Screening equipment

Drum Screener Machine: There are some differences in particle sizes of the particles exported from the pelletizing and forming system, which requires sieving and grading. Drum Screener machine has the advantages of low vibration, low noise and convenient screen change. The production line is equipped with automatic feed-back system, which screens the unqualified large and small particulate materials, conveys them through belt hoist, re-crushes them and sends them to the granulator to continue granulating, which is helpful to improve the continuous operation ability of the production line.

Vibration Screener Machine: It has better screening effect for materials, but it has more dust than rotary drum screening machine at work.