In the production of organic and compound fertilizers, pellet formation is a key step in determining fertilizer quality. Flat die granulators, with their adaptability and low energy consumption, have become a mainstream piece of equipment in the industry.

This flat die granulator operates with a clear and efficient process: powdered raw materials fed from a hopper enter the granulation chamber, where they are squeezed into the die holes by the relative motion of a roller and a flat die. The exit cutter then cuts them into uniform cylindrical pellets, eliminating the need for complex pretreatment.

Its core advantages lie in three key areas: a granulation rate exceeding 90%, uniform pellet strength, and the preservation of nutrients such as nitrogen, phosphorus, and potassium. It is compatible with a wide range of organic materials, including livestock and poultry manure, straw, and humic acid, and can even successfully form crude fiber materials with low cohesiveness. Furthermore, it eliminates the need for additional drying, enabling direct pelletization with a moisture content of 20%-40%, significantly reducing energy costs.

Amid the trend toward green agriculture, flat die granulator environmental value is particularly prominent. Converting agricultural waste into structured granular fertilizer not only solves the pollution problem of straw and feces, but also improves fertilizer application efficiency. By using molds with different apertures, granule specifications can be flexibly adjusted to meet diverse fertilization needs.

Many fertilizer companies switch product categories based on market demand. However, if the compatibility of the fertilizer granulator machine with the fertilizer type is neglected, problems such as reduced granule quality and frequent equipment failures can occur.

For organic fertilizers (including straw and fermented manure), the key requirement is “adaptability to the fiber raw material and avoid entanglement and machine blockage.” Flat die granulators or rotary drum granulators are preferred. The vertical extrusion design of the flat die cuts long fibers, and the trapezoidal, non-slip rollers reduce fiber entanglement. Rotary drum granulators use rolling to form the granules, and the lifting plate evenly lifts the fiber material to avoid localized accumulation.

For compound fertilizers (containing phosphate rock and potassium chloride), the key requirements are “high granule hardness and transport resistance.” The high compression ratio of the ring die granulator allows hard mineral raw materials to be extruded with a compressive strength of over 15N, meeting the requirements of long-distance transportation.

For biofertilizers (containing functional microbial agents), the key principle is “low-temperature granulation to protect the activity of the agents.” A flat die granulator (chamber temperature ≤ 40°C) or a disc granulator (rolling, no high-temperature extrusion) can prevent inactivation of microbial agents.

For slow-release fertilizers (including coating materials), “smooth granules suitable for subsequent coating” are required. The rolling forming method of a rotary drum granulator produces smooth, uniformly sized granules, which prevent the coating from detaching during coating.

In the process of agricultural modernization, NPK compound fertilizer, containing the three core nutrients of nitrogen, phosphorus, and potassium, has become a crucial factor in increasing crop yields. As the core equipment for converting NPK raw materials into practical fertilizers, NPK fertilizer granulator machines are profoundly impacting the fertilizer industry’s production efficiency and product quality.

The core value of NPK fertilizer granulator machines lies in resolving raw material form issues. Through the granulator’s physical processing, powdered raw materials are extruded and shaped into uniform granules. This not only improves fertilizer stability, facilitating long-distance transportation and long-term storage, but also ensures a slow release of nutrients during application, improving crop absorption.

Furthermore, NPK fertilizer granulator machines offer significant advantages: high efficiency and adaptability. Modern granulation equipment can adjust parameters based on different raw material ratios to meet the production needs of various NPK compound fertilizers, including those high in nitrogen, phosphorus, and potassium. Furthermore, the equipment’s energy consumption is continuously optimized, increasing production speed while reducing operating costs.

For the fertilizer industry, NPK fertilizer granulator machines are not only a production tool but also a key to enhancing product competitiveness. With the growing demand for high-efficiency fertilizers in agriculture, NPK fertilizer granulator machines will undoubtedly continue to play a vital role in driving the fertilizer industry towards greater efficiency and higher quality.

With the advancement of green agriculture, “environmental protection and resource utilization” have become core priorities in fertilizer production. Double roller press granulators (fertilizer compaction machines), with their outstanding environmental performance and resource utilization, have become key equipment for green fertilizer processing.

The double roller press granulator offers significant technological advantages in improving fertilizer quality. The fertilizer granules formed through physical extrusion have uniform density and high hardness, making them less prone to breakage and clumping during transportation and storage. More importantly, after application to the soil, these granular fertilizers release nutrients at a steady rate, extending their effective life and reducing the loss of nutrients such as nitrogen, phosphorus, and potassium through rainwater erosion.

The double roller press granulator’s environmental value is also reflected in its raw material processing and energy consumption control. The double roller press granulator can directly process agricultural waste such as fermented livestock and poultry manure, composted straw, and fruit and vegetable residues, transforming “waste” into high-quality organic fertilizer and achieving resource recycling. The equipment also eliminates the need for high-temperature drying, reducing emissions from coal or gas combustion. Its enclosed conveying design effectively controls dust spillage, improving the production environment.

Furthermore, its operation and maintenance requirements are low. Its simple structure and clear procedures allow workers to master the process after a short training period. Routine maintenance requires only regular inspection of the squeeze rollers for wear and cleaning of the feed channel, significantly reducing operational costs for small and medium-sized fertilizer companies.