How to Improve the Efficiency of the Granulator in an Organic Fertilizer Production Line

fertilizer granulator Sep 4, 2025

As the core equipment in an organic fertilizer production line, the efficiency of the granulator directly determines the production capacity and product quality of the entire line. Improving granulator efficiency requires precise attention to multiple aspects, including raw materials, equipment, operation, and maintenance, to overcome common production bottlenecks.

Proper raw material pretreatment is fundamental. Organic fertilizer raw materials have complex compositions. Improper moisture and particle size can easily lead to clogging or loose granules. Moisture content should be controlled between 25% and 35%. If the moisture content is too high, a dryer should be used for dehydration; if it is too low, water spraying should be used for conditioning. A pulverizer should be used to control the particle size to 80-100 mesh to prevent impurities from entering the machine. Binders such as bentonite and starch should be added in appropriate proportions to enhance raw material cohesion, reduce powder waste, and increase granulation success rates.

Scientifically controlling equipment parameters is a key measure. Different granulators (such as rotary drum granulators and double roller press granulators) require matching parameters. For rotary drum granulators, the drum speed (usually controlled at 15-25 rpm) and tilt angle (3-5°) must be adjusted according to the raw material characteristics; for double roller press granulators, the roller pressure and gap must be appropriately set. Furthermore, the feeder must ensure a uniform feed rate to prevent material fluctuations that could cause the granulator to “run out” or “stuck,” maintaining stable equipment operation.

Enhanced routine maintenance is essential. During granulator operation, clean the inner wall of the drum or the extrusion die of residual material every shift to prevent scaling that could affect performance. Check bearing lubrication weekly and refill with high-temperature grease to prevent friction overheating and reduce the speed. Replace worn scrapers and liners monthly to prevent component aging and reduced molding efficiency. Maintain an equipment maintenance log to record parameters and faults to facilitate troubleshooting and reduce downtime.

Optimizing supporting processes can further improve efficiency. Linking the pelletizer with upstream and downstream processes, using sensors to monitor raw material data in real time, and adjusting upstream equipment parameters to ensure quality raw materials. Optimizing the drying and pelletizing speeds prevents pellet accumulation and moisture, minimizing secondary processing, and maximizing pelletizer efficiency.

In summary, improving pelletizer efficiency requires a balanced approach of “source control, process optimization, and ongoing maintenance.” Through refined management, production and quality can be increased while extending equipment life, ultimately creating greater profitability for the production line.

Disc granulators are a powerful granulation tool for diverse applications

fertilizer granulator Sep 4, 2025

As a highly efficient granulation machine, disc granulators have broad and important applications across multiple industries thanks to their simple structure, convenient operation, and excellent granulation results.

In fertilizer production, disc granulators are essential key equipment. They play a vital role in the production of compound fertilizers, organic fertilizers, and slow-release fertilizers. In compound fertilizer production lines, disc granulators mix various basic fertilizer ingredients in appropriate proportions. The rotating motion of the discs gradually forms uniform granules under the influence of centrifugal force and gravity. The resulting granulated fertilizer is not only easy to store and transport, but also improves fertilizer utilization and reduces nutrient loss. In organic fertilizer production lines, disc granulators ferment organic materials such as livestock and poultry manure and straw before granulating them. This converts loose organic materials into granulated organic fertilizer, improving its physical properties and making it easier for farmers to use. This also promotes the resource utilization of agricultural waste.

The metallurgical industry is also a key application for disc granulators. In the processing of metal ore powder, granulation is often necessary to improve smelting efficiency and utilization. Disc granulators can granulate metal ore powders such as iron ore and manganese ore. The resulting granules are characterized by high strength and good air permeability. Once introduced into smelting equipment such as blast furnaces, they facilitate a more complete smelting reaction, laying the foundation for efficient production in metallurgical enterprises.

In the environmental protection field, disc granulators have demonstrated significant application value in solid waste treatment. Granulating solid wastes such as sludge generated by municipal sewage treatment plants and slag discharged from industrial production using disc granulators not only reduces the volume of solid waste, facilitating subsequent landfill, incineration, or resource recovery, but also reduces the risk of environmental pollution.

Due to its flexible applicability, disc granulators continue to play an important role in various application scenarios. As production requirements continue to increase across various industries, their application prospects will continue to expand.

Working principle and characteristics of double roller granulator for dry granulation

fertilizer granulator Dec 11, 2020

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.

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

fertilizer granulator Dec 11, 2020

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.

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.