Controlling the rotary drum granulator to improve the particle roundness

fertilizer granulator Dec 10, 2020

The time and frequency of material rolling in the rotary drum granulator are the primary factors to determine the pelletizing rate and particle roundness. The roundness of granular product in fertilizer production line can be improved by controlling the drum granulator.

Production principle of rotary drum granulator

Materials rely on surface tension, proper amount of liquid phase, extrusion force generated by rolling between materials, and correct movement direction of materials in the granulator, with small particles as the core, they absorb and adhere to each other and form balls in rolling. In a certain period of time, the higher the rolling frequency is, the higher the spheroidization rate is, and the rounder the particles are.

In the process of production, we have encountered two kinds of situations due to the different friction between materials and the wall of granulator.
1. The internal surface finish of granulator is large, so that the friction force between material and cylinder wall is reduced, and the upward movement force of material is weakened. If the material does not roll, it will not produce particles. In view of this situation, we can solve this problem by adjusting the speed of the granulator and installing a small plate inside.
2. The material in the drum granulator is severely stuck to the wall, and the friction between the material in the granulator and the wall of the barrel is increased, which raises the material in the machine too high, causing the material to fall from the top, so that the formed particles are not Rounding and excessive large particles, we think there are two reasons for this situation: on the one hand, the material is caused by too much viscous material, in this case, we change the formula of the npk production line to reduce the amount of viscous material; on the other hand , The inside of the granulator is not smooth. In this case, we change the internal material to increase the smoothness of the granulator.

On the other hand, we should also control the reasonable amount of material returned to the whole fertilizer production line. The process of rotary drum steam granulation is different from that of general fertilizer granulator, the relative pelletizing rate is lower, and the amount of returned material is higher. The amount of returned material directly affects the output and quality. The product has less particles, more powder and larger amount of return material, which directly affects the output. Large particles return more materials, directly affect the smoothness and roundness of the product.

Several basic granulation methods of NPK fertilizer

fertilizer granulator Dec 9, 2020

Mixing granulation of different NPK fertilizers is the core of compound fertilizer processing. Fertilizer production line generally uses the following methods to granulate:

1. Extrusion granulation is a method of making dry powder or wet powder containing binder into cylindrical, spherical or sheet shape by mechanical processing such as extrusion, roller extrusion or pressing. The technology of dry granulation is used in the flat die pellet mill, the ring die pelleting machine and the double roller granulator.

2. Agglomerating granulation, which is under the action of rotation, vibration, agitation and so on, makes the wet powder in motion agglomerate. Or use the fluidized bed to make the material obtain the cohesive force by supplying the spray liquid binder) so as to grow into the appropriate particles. This method is used in disc granulator and rotary drum granulator.

3. Crushing granulation, which is to crush the block material into particles of appropriate size.
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4. Melt granulation, which is a method of cooling and hardening molten liquid for granulation.

5. Spray granulation. It is a method of directly forming granules after concentrating the solid in the liquid.

6. The method of crystallization and granulation in liquid phase is to make materials precipitate and crystallize in liquid phase, at the same time, agglomerate into spherical particles by the action of liquid bridging agent and agitation. This technology is widely used in pharmaceutical industry. Because the shape of the particles is spherical, it is also called spherulite granulation, which is called spherulite granulation for short. Spherulite is a kind of spherical particle formed by the crystallization and aggregation of pure materials. It has good fluidity, filling and compression formability. In recent years, the technology has been successfully applied to functional pellets.

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Fertilizer machine manufacturer introduces reasons for purchasing roller granulator

fertilizer granulator Nov 20, 2020

As a professional organic fertilizer machine factory, our double roller press granulator has the following advantages:

1. Circulation operation, realize continuous production, high output of finished products;

2. The material is compressed by mechanical pressure, without any additives, and the purity of the product is guaranteed.

3. The particle strength can be adjusted, and the finished product strength can be controlled by adjusting the roller pressure;

4. The extrusion granulator is suitable for a wide range of raw materials, and the particle strength can be adjusted freely according to different materials.

5. Compact structure, convenient maintenance, simple operation, short process flow, low energy consumption, high efficiency and low failure rate.

The double roller extrusion pelletizer consists of the following main components: hinged press frame, easy to replace roller components, floating and fixed rollers, main transmission device with reduction gear, feeding equipment, hydraulic pressure boosting system, automatic grease. Enclosed machine housing to minimize the spread of dust.

Technical parameters of roller press granulator

The roller pelletizer is a newly developed high-efficiency and energy-saving product in our factory. It has the characteristics of reasonable structure, safety and reliability, convenient use, and output power. The whole Huaqiang fertilizer granulator brand of this machine is divided into DZJ Ⅰ series and Ⅱ series, the power includes 15Kw, 18.5Kw, 22Kw. The output is 1-3 (t/h), and the moisture content of the raw materials is generally controlled at 2%-8%. This model is equipped with a refueling system, which greatly improves the life of the machine.

How does the roller press granulator achieve green reuse of resources

fertilizer granulator Nov 20, 2020

How to achieve the green reuse of resources, is the issue of concern. The roller type extrusion granulator is a kind of machine product designed and produced under such a big premise. The following organic fertilizer machine manufacturers for you to introduce in detail:

First of all, the roller press pelletizer is widely used to granulate some abandoned materials, such as pulverized coal, carbon powder, coke powder, carbon black, mineral powder, dust removal ash, lime powder and other metal mineral powders, industrial recycled dust materials, cast iron mill dust, lead, zinc, aluminum dust, converter dust, filter dust, grinding dust, etc.

The roller press granulator can realize the recycling of resources and protect the environment greatly at the same time. In terms of environmental protection, the equipment adopts the process of no drying and normal temperature production, with high particle strength and higher bulk specific gravity than other granulation methods, which is especially suitable for increasing the bulk specific gravity of products.

What’s more important is that the mechanical transmission system of the roller type granulator is completely sealed in the body. As the powder material completes the granulation process in the wet state, there is no three wastes discharged from the operation of the prilling and its follow-up process, which truly achieves green production. The roller press granulator has achieved the green reuse of organic fertilizer p​roduction line https://m.hqhifertilizermachine.com/production-line/organic-fertilizer-production-line.html, and its market potential is huge.

How to prevent organic fertilizer facilities from rusting in rain

fertilizer granulator Nov 19, 2020

Fertilizer machine is valuable. After we buy organic fertilizer equipment, we should also pay attention to maintenance in daily use. Rust is a problem often encountered by the organic fertilizer production equipment, especially in rainy days. Although the machine is not exposed to rain, it will still find rust when it is used later. What should be done in this case? Let’s explain how to prevent the fertilizer facilities from rusting in rainy days.

There is more rain in autumn. In rainy season, people will store the organic fertilizer equipment in the designated place as usual, but when it is reused after rainy day, it will be found that the organic fertilizer equipment is rusty, some mechanical parts are aging, and some parts are wet. Therefore, in view of these problems, how to keep the organic fertilizer plant in rainy days is very important.

1. Rust proof iron work. At present, the use of organic fertilizer production facilities and most of the accessories are made of iron. They are not well preserved, easy to rust and shorten the service life. The machine should be painted with antirust paint and stored in a ventilated and dry place. It is better to set up canopy for compost turning machine.

2. Anti aging of rubber parts. When the rubber parts of the organic fertilizer production equipment are damped or stained with oil, they are easy to age and crack, thus shortening their service life.

3. Protect the motor from moisture. The motor of the organic fertilizer granulator is not used for a long time, and it should be placed in a ventilated, dry and clean warehouse. If the motor is placed in the fertilizer wetland or the place easy to be wet by rain, the motor will be damped and the insulation performance will be reduced, which has caused short circuit, electric leakage, ironing and even burning coil.

The above is a simple way to prevent the equipment from rusting. As for NPK fertilizer production line and other heavy machinery, we should pay more attention to the maintenance and do a good job in the daily maintenance of the equipment, which is conducive to prolonging the service life of the fertilizer equipment and reducing the number of failures of the organic fertilizer equipment in use.

Water control of drum granulator during granulation

fertilizer granulator Oct 29, 2020

In chemical processing industry, rotary drum granulator is widely used in organic fertilizer production line and NPK fertilizer production line. In the granulation process of the drum granulator, the coarsening in the pellet is mainly in the form of cladding, so the material circulation volume should be larger, so as to provide a coarser core for the cladding process, and the water injection volume should be smaller, so as to reduce the water absorption of the core.

When pelletizing by bonding or “gathering”, the materials are smaller, because the materials in the drum are mainly composed of fresh materials with small particle size and mutual bonding. The liquid ratio required for bonding should be large, because the space between the fine powder particles to be bonded with each other should be filled with water.

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Difference between the production machines of organic fertilizer and compound fertilizer

fertilizer granulator Oct 29, 2020

The internal quality of organic fertilizer mainly depends on raw material fermentation and product formula. The key factors affecting the fermentation of organic fertilizer production process are: microorganism, carbon nitrogen ratio, carbon phosphorus ratio, water content, pH value, aeration control. If one factor is not properly controlled, the whole fermentation will be affected, resulting in incomplete fermentation of materials or long fermentation time. If the material fermentation is well formulated, the effect is better than inorganic fertilizer, and the cost is also low. It can also improve the living environment of plants and become green fertilizer. The formula of organic-inorganic compound fertilizer is different from that of inorganic fertilizer, and there are also differences in different soil and crop formulas. The organic fertilizer manufacturing process is different from that of compound fertilizer, and the fertilizer production machine is also different.

Difference of production technology between compound fertilizer and organic fertilizer

The machines required for the organic fertilizer manufacturing process is mainly divided into two parts, fermentation part and production granulation part. NPK fertilizer manufacturing process is mainly granulation processing. The granulation part of organic fertilizer is also different from that of inorganic fertilizer.
Because organic raw materials are different from inorganic raw materials, the production of inorganic raw materials can be mainly based on the formula of raw materials, which is mainly chemical reaction. If the formula is proper, the operation is skilled, the pelletizing rate is very high, and the production is relatively easy. Roller granulator is suitable for dry granulation of NPK fertilizer and disk granulator is suitable for wet granulation.
For organic fertilizer, granulation is difficult even if the raw materials are fermented well, because the characteristics of organic raw materials are light, rough, low adhesion, and a wide variety of organic raw materials. Raw materials have different characteristics, so when selecting fertilizer granulating machine, special attention should be paid, otherwise not only the output will be affected, but also the appearance of the product is not beautiful. Rotary drum granulator is generally used for granulation of organic fertilizer and compound fertilizer.

When selecting the organic fertilizer production machine, we should pay attention to the following points: output of organic fertilizer production, organic raw materials, fermentation mode, fertilizer granulator machine, mechanization degree of organic fertilizer equipment. These are key factors in purchasing equipment. In short, organic fertilizer production is a relatively complex process, but the risk is relatively small, which can bring rich profits to the enterprise.

Main advantages and disadvantages of granulation process and technology of potash fertilizer

fertilizer granulator Oct 21, 2020

The potassium fertilizer is fed into the disc granulator, so that the material gradually piles up by itself until it reaches the required particle size. When the raw materials are piled up on the disc, the binder can be added to support the agglomeration of the materials. Since water will be added to the disc during granulation, additional drying process is required for the fertilizer production line when using this method of rolling raw materials into balls.

Advantages and disadvantages of potash fertilizer granulation

1. The granulation of potash fertilizer has many advantages. This non pressure agglomeration technology can produce particles with smaller density, so that the particles can decompose rapidly. Because most of the potash fertilizer can be used as fertilizer after processing, the ability to decompose and provide nutrition faster is the inducement to choose potash fertilizer particles. It is an ideal product for fertilizer compounds with fixed formula requirements that require rapid nutrient delivery. The round granular potash fertilizer is also easy to handle, and the fineness of potash fertilizer is lower than that of compacted particles.

2. The main disadvantage of potash granulation is that the processing cost is high, and potash particles are considered as high-quality products. Therefore, it is not generally produced like compacted particles. However, it is worth mentioning that the disc granulator is the ideal choice (as opposed to the fertilizer extrusion production process) due to the hardness of potassium salt in the treatment of some potassium salt derivatives.

Granulation technology of potash fertilizer

Disc granulator machine is widely used in the field of potash fertilizer granulation, NPK fertilizer granulator can also be used in the processing of potash fertilizer and a variety of compound fertilizers. The disk type fertilizer granulator is a new type of fertilizer granulator: its granulation rate can reach more than 95%, the main gear of the granulator is quenched with high frequency, the service life is doubled, the disk of the disc pan granulator is of arc structure, lined with high-strength fiberglass, and the bottom of the disk is strengthened by a number of radiation steel plates; it is durable and never deformed. After the potassium fertilizer powder enters into the pelletizing plate, the material continuously rotates and is sprayed by the pelletizing plate, so that the materials stick together to form spherical particles.

High efficient automatic batching system for organic fertilizer production line

fertilizer granulator Oct 7, 2020

A set of fertilizer automatic batching equipment is composed of several automatic batching bins and automatic batching machines, which can accurately batching in the production of organic-inorganic compound fertilizer and mixed fertilizer, so as to control the proportion of various nutrients and ensure the quality of products. The automation of batching and weighing system reduces the labor intensity of workers and improves the accuracy of batching. It is an indispensable equipment in the NPK fertilizer production line and organic fertilizer manufacturing process.

Organic fertilizer automatic batching system

Automatic batching system is an automatic equipment used for quantitative distribution of raw materials for a variety of materials (such as fertilizers). It is mainly used in the fertilizer industry to replace manual bench scales or volumetric measurement. This machine has the characteristics of high measurement accuracy, high distribution efficiency, high degree of automation, etc. It is one of the main parts in the complete batching equipment of the automatic batching machine.

The fertilizer automatic proportioning device can complete the automatic proportioning according to user needs, and is suitable for various dry powders and granular materials with low viscosity. The decomposed compost processed by the compost turning machine can also be used as a raw material. The automatic batching system adopts microcomputer control, electronic monitoring, digital prompt, wired remote control operation, and has the characteristics of accurate weighing, high batching precision, fast speed, good control function and convenient operation.

Application of fertilizer automatic batching system

The growth of crops needs a variety of nutrients, for example, nitrogen, phosphorus and potassium are the basic elements which need a large amount. When using the electronic batching machine for batching, it is necessary to set a silo for each raw material containing these elements. The raw materials used in the production of organic-inorganic compound fertilizer are all powdery. After the raw materials of these different components are configured according to the set proportion, they are made into compound fertilizer particles by the disc granulator machine. In the production of mixed fertilizer, granular raw materials can be placed in the batching system.

The automatic batching system is used in all kinds of organic compound fertilizer production lines, which can effectively guarantee the batching accuracy and improve the productivity. The mechanism is simple, reliable and easy to operate and maintain. Because the measurement is accurate, it can effectively guarantee the quality of organic fertilizer and compound fertilizer. Electronic batching machine is a new type of batching machine, especially suitable for compound fertilizer and compound fertilizer manufacturing plant.

Comoparsion with disc granulator and roller press granulator

fertilizer granulator Sep 25, 2020

For organic fertilizer machine, granulation is an indispensiable process link in the production line of organic fertilizer. At present,there are many types of equipment for organic fertilizer granulator. Which one is more suitable for producing the organic fertilizer? The comparsion of disc granulator and roller press granulator.

Through the comparsion of the pelletilizer models, the disc granulator and the roller press granulator are different in the granulation production process, so that users have great differences in the selection of these two models. Today, professional organic fertilizer machine manufacturers give you a detailed disclosure of the disc granulator and the roller press granulator which is more suitable for organic fertilizer granulation. And how to choose the suitable fertilizer granulator machine.

From the perspective of production process, the two kinds of disc granulator have advantages over the double roller press granulator. From the perspective of production process, the processing technologies of disc granulator and opposite roller press granulator are not too complex. For example, the difference between the two equipment in the granulation appearance process is that the particle size of the disc granulator has high degree freedom, good smoothness and roundness, and the particle size of the roller press granulator is relatvely uniform. But there are defects in the appearance. However, it can be made up by the organic fertilizer rounding machine.