Working principle and characteristics of double roller granulator for dry granulation

Working principle of double roller granulator

When the double roller granulator works, it is forced to roll the material into shape by two opposite moving roller skins of the granulator. Semi circular spherical cavities are regularly distributed on the two cylindrical roller skins. When the roller skin rotates against each other, the two semicircular cavities just form a complete spherical mold, and the materials inside are forced to be extruded into spherical particles. Due to the continuity of extrusion production, the particles and particles are connected together when they are just extruded, forming a cloth full of particles, which needs to be broken up by the crushing roller and divided into small round particles, and then screened from the screen to select the qualified particles.

double roller granulator

In the production of granular fertilizer by double roller fertilizer granulation machine, it should be noted that the ball socket on the two roller skins should be in good position. If it is not adjusted in place, there will be a certain dislocation during granulation, which can not produce qualified granular fertilizer. In addition, after the formation of particles, they will be released from the ball and socket of roller skin in time, so as to realize continuous production. If the formed particles do not come out in time, complete particles will not be formed, thus affecting the normal production.

Characteristics of double roller granulator for dry granulation
1. There is no drying process in the organic fertilizer granulation machine. It is granulated at room temperature and formed in one time. It has the advantages of less investment, quick effect and good economic benefit.
2. Compound fertilizer double roll extrusion granulator has small power, reliable operation, no waste discharge, stable operation, convenient maintenance, reasonable process layout, advanced technology and low production cost.
3. The material of the roller extrusion granulator is widely used, not only in fertilizer industry, but also in all kinds of chemical raw materials such as snow melting agent.

Environmental protection granulation process of double roller granulator

The double roller granulator uses the way of forced extrusion to make particles, the whole process does not need drying and cooling, and the equipment investment is small. What’s more important is that this granulation method is a very environmentally friendly production mode because it is made of particles by physical methods, and the whole process has no pollution and no waste.

double roller gr

Environmental protection granulation process of double roller granulator

When the double roller extrusion granulator works, it is forced to roll the material into shape by two opposite moving roller skins of the granulator. Semi circular spherical cavities are regularly distributed on the two cylindrical roller skins. When the roller skin rotates against each other, the two semicircular cavities just form a complete spherical mold, and the materials inside are forced to be extruded into spherical particles. Due to the continuity of extrusion production of organic fertilizer granulation machine, the particles and particles are connected together when they are just extruded, forming a cloth full of particles, which needs to be broken up by the crushing roller and divided into small round particles, and then screened from the screen to select the qualified particles.

The fertilizer granulation machine has the advantages of low investment and good economic benefit. The complete set of equipment is compact in layout, scientific and reasonable, and advanced in technology. Energy saving and consumption reduction, no three wastes discharge, stable operation, reliable operation and convenient maintenance. It is suitable for granulation of various raw materials such as compound fertilizer, medicine, chemical industry, feed and so on.

Controlling the rotary drum granulator to improve the particle roundness

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.

rotary drum granulator
rotary 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.

How does the roller press granulator achieve green reuse of resources

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.

roller press granulator
roller press granulator

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 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.

organic fertilizer production equipment
organic fertilizer production equipment

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

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.

Continue reading “Water control of drum granulator during granulation”

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

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.

potash fertilizer granulation production line
potash fertilizer granulation production line

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.

How to use the roller press granulator?

Roller press granulator machine is a kind of organic fertilizer machine to be used in different type fertilizer manufacturing process. How to equipped of the roller press granulator?

The roller press granulator machine is a new designed fertilizer granulator machine series.It is usually to be equipped in npk fertilizer production line to make npk, compound fertilizer granulator. It is produced by no drying and normal temperature process, with one time forming, output of 1-1.5t/h and 1.5t/h-3t/h.The equipment has the advantages of less investment, quick effect and good encomic benefit.

roller press granulator
roller press granulator

The layout of complete equipment of roller press granulator is compact, scientific and reasonable, and the technology is advanced. Engery saving and consumption reduction, no discharge of three wastes, stable operation, reliable operation and convenient maintenance.Wide adaptability of raw materials, suitable for granulation various raw materials such as compound fertilizer, medicine, chemical industry, feed etc., with high granulation rate.

Double roller press pelletizer can produce various of compound fertilizer with various concentrations with being made in the fertilizer production line (including organic fertilizer, inorganic fertilizer, biological fertilizer, magnetized fertilizer, etc.) .

The advantage of the roller press granulator

​Organic fertilizer machine to be designed and used to produce the fertilizer. In the fertilizer manufacturing process, it is to be equipped with different type and series fertilizer granulator machine to finish the granulating process. What advantages of the roller press granulator?

Brief introduction of roller press granulator:

Zhengzhou Huaqiang brand counter roller press granulator is the key fertilizer equipment of organic fertilizer and compound fertilizer granulation.It has advanced technology,reasonable design,compact structure,novel and partical,low engery consumption.It forms a small production lin with corresponding equipment,which can form a certain capacity of continuous and mechanized production.With eugeniscs formula,no need to dry,normal temperature production,the products is roller once to make the product quality meet the technical index requirements of compound fertilizer.It is a comsumption reducing product in compound fertilizer industry.

roller press granulator
roller press granulator

Application features of the double roller press granulator:

1. The roller press granulator machine is produced by non drying process,granulating at normal temperature and forming at one time.It has the characteristics of less investment,quick effect and good economic benefit.
2. The structure of the fertilizer granulator machine adopts granulation,molding and screening as a whole,which makes it beautiful in appearance,simple in operation and low in engery consumption.The main parts such as roll body are made of a new type of metal with the characteristics of corrosion resistance,wear resistance and impact resistance.

Fertilizer granulator machine series products not only the roller press granulator machine, it is also included the disc granulator machine, rotary drum granulator machine and so on.

Selection skills of disc granulator fertilizer production equipment

Although the disc granulator machine has a slightly smaller output than the rotary drum granulator, it is still the main equipment for compound fertilizer production, and the fertilizer granules produced have a smooth appearance. Therefore, many companies have retained disc granulators in organic fertilizer production. Now that the disc pan granulator is still in use, what are some tips when choosing disc granulation equipment?

1. When choosing equipment, don’t be greedy for cheap, buy some equipment from small manufacturers. Although it was cheap at the time, it is easy to have problems such as this in the future use, which delays normal production. Not worth it.

2. When choosing a device, you must first choose a regular manufacturer. This is the most important, because even if there is a problem with our device in the future, we can find them and solve the problem. Our company’s consistent style is to provide follow-up guarantee services, so no matter what the customer has in the equipment we produce, we will seriously solve the problem until the customer’s problem is solved.

3. Pay attention to the quality of the equipment when purchasing the equipment. When selecting the organic fertilizer production line, we must go to the manufacturer to inspect it. During the inspection process, we should have a general understanding of the strength of the company and the quality of the equipment produced Wait.

disc granulator machine
disc granulator machine

Some precautions when using the disc granulator machine:

1. The disc granulating equipment should be checked between productions to see if the inside of the granulating disc is empty. In addition, the machine should be preheated before production.
2. Pay attention to changes in production temperature at any time during the production process and adjust in time.
3. Attention must be paid to the production of disc granulation equipment. Check whether the direction of disc rotation is reversed. If it is reversed, stop immediately to avoid other problems.
4. In fact, the equipment is the same as that of human beings, and they need to be checked and cleaned regularly. After a period of production, relevant staff must be arranged to check the machinery.