How to scientifically maintain the double roller press granulator

fertilizer granulator Aug 18, 2025

As an important organic fertilizer production equipment, the double roller press granulator can always maintain efficient operation, extend its service life, and escort production. Mastering scientific maintenance methods can not only reduce the hidden dangers of failure, but also enable the equipment to output high-quality particles stably for a long time.

Daily maintenance needs to form a standardized process. Before starting the machine, in addition to checking the connection and fasteners of the components, it is necessary to focus on whether the feed port is unobstructed, remove possible foreign matter, and avoid material jamming and damage to the equipment after starting. During operation, in addition to paying attention to the rotation and sound of the rollers, it is also necessary to observe the temperature of the motor. If overheating occurs, the machine should be shut down to cool down to prevent the motor from burning. The cleaning work after shutdown should be thorough. A special brush can be used to clean the residual material in the roller texture, and compressed air can be used to blow the equipment gap to prevent the material from corroding the components after moisture and agglomeration.

Maintenance of key components must be accurate and in place. The parallelism of the rollers needs to be checked every time they run for a period of time. If there is an offset, it should be calibrated in time to ensure uniform extrusion force; when the surface is worn to a certain extent, it can be polished and repaired to extend the service life. Bearing lubrication requires the use of lubricating oil of suitable types, which should be refilled at least once a month. Before refilling, clean the impurities in the oil filling port to prevent contamination of the lubrication system. The chain of the transmission system should be regularly smeared with chain oil, and the gears should be checked for meshing. If abnormal noise or jamming is found, timely adjustments should be made to avoid affecting the granulation efficiency due to poor power transmission.

Well-maintained equipment can reduce downtime, maintain stable granulation efficiency and granule quality, and reduce long-term use costs. Choose a double roller press granulator and cooperate with scientific maintenance to make your organic fertilizer production line continue to be efficient and your profits more guaranteed.

The unique working principle of the double roller press granulator

fertilizer granulator Aug 16, 2025

The reason why the double roller press granulator can occupy an important position in the organic fertilizer granulation equipment is inseparable from its unique working principle, which also allows it to show many advantages.  Its working process is clear and straightforward. First, the pre-treated dry powder raw material is conveyed between two relatively rotating rollers. The surface of this pair of rollers is usually provided with specific lines or grooves. Under the action of strong extrusion force, the raw material is tightly squeezed to form continuous flakes. These flakes then enter the crushing device and are crushed into particles of different sizes. Next, the particles will go through the screening stage, and the fine powder or large particles that do not meet the requirements will be separated and sent back to the granulation system, while the qualified particles will become the final product.

This working principle brings significant advantages. There is no need to add a lot of water, and the subsequent drying step is omitted, which not only saves energy, but also maintains the original nutritional content of the raw materials. The whole process is coherent and efficient, from the entry of raw materials to the output of qualified particles, which can be completed in one go and quickly meet production needs. At the same time, due to the physical extrusion granulation, it has strong adaptability to raw materials, and a variety of organic raw materials can be made into granules in this way.

The double roller press granulator has become an efficient and practical granulation choice in the organic fertilizer production line due to its scientific working principle, helping producers improve efficiency and ensure quality.

How to Choose Suitable Fertilizer Granulator Machine

fertilizer granulator Dec 4, 2019

Granulating fertilizer with granulator makes it easy to store and sow. It is beneficial to the even distribution of nutrients and slow release the fertilizer efficiency. Different types of fertilizers, different sizes and shapes of fertilizer particles, and different granulators are used.

We can choose the right fertilizer granulator machine according to the specific function of the machine.

Rotary Drum Granulator

Drum Granulator is a larger production version of the disc granulator, make the fertilizer powder into round particles. It is suitable for hot and cold granulation and high, medium and low concentrations of mass production of fertilizer. The shell of the machine uses special rubber slab lining or acid-resistant stainless lining board which realizes auto scar removal and de-tumor instead of traditional drawknife equipment.

Disc Fertilizer Granulator

Disc Granulator, also called pan granulator, not only produce organic fertilizer, but also compound fertilizer. The disc bottom adopts multiple steel plates which are firm, durable, not deforming. The granulator’s main gears adopt high temperature quenching technology, doubling the service life. Granulation rate reaches above 93%.

Flat Die Extrusion Pelleting Machine

Flat die extrusion pelleting machine is used for granulation to all kinds of organic matter after fermentation, break through the conventional organic prilling before granulation needs not to dry and crush the raw materials. Pelleting machine can direct burdening to work out cylindrical grain, has better granulation effect on fertilizers containing more straw, can save a lot of energy.

New Type Organic Fertilizer Granulator

This Organic Fertilizer Granulator is used for making granulation of organic matter after fermentation, dedicated to the production of organic fertilizer granules. After fermentation organics don’t need to dry, it process fertilizer powder into granules, the organic content can be high to 100%. The granulator have the feature of simple machine structure, easy operation and maintenance, low power consumption.

Double Roller Press Granulator

Double roller press granulator is often used to manufacture NPK compound fertilizer, such as ammonium choride, ammonium sulphate, ammonium nitrate, diamonium phosphate, potassium Sulphate, magnesium sulfate, magnesium silicate, zinc sulphate, phosphorus pentoxide, etc. This machine diameter of the ball can be made according to the requirement of the customers. The roller press 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.

For more information on how to choose granulator machine, please contact us. We are a well-known fertilizer machine manufacturer in China. We have many years of rich experience and we will try our best to give you a detailed answer.