Compound Fertiliser Granulation Production Line

Customised Compound Fertiliser Granulation Production Line
Compound fertiliser granulation production lines are vital for improving fertiliser quality and meeting the diverse needs of agriculture. We have carefully designed production line solutions for you, covering the entire process from raw material handling to finished product packaging, ensuring efficient and stable production.
Production Capacity of Compound Fertiliser Granulation Production Line
Production capacity
The production capacity is about 5 – 10 tonnes per hour, which is suitable for small fertiliser enterprises or new enterprises at the start-up stage, with a small footprint, relatively low investment costs and flexibility in responding to the market demand at the start-up stage.
The production capacity is between 10 – 20 tonnes per hour, which can meet the stable supply of a certain regional market, has a better balance between production efficiency and product quality control, and is conducive to the gradual expansion of market share and enhancement of brand influence.
With a production capacity of more than 20 tonnes per hour, specially designed for large-scale fertilizer groups or high-demand markets, adopting highly automated and intelligent control systems, with high production efficiency and excellent quality control, capable of realising large-scale production and supplying domestic and international markets.
Equipment Configuration of Compound Fertiliser Granulation Production Line
Equipment Configuration
Raw material receiving and pre-processing equipment
- Raw material silos: large silos built according to the characteristics of raw materials such as urea, monoammonium phosphate, potassium chloride, etc. The material can be steel or concrete, with moisture-proof, rain-proof and rodent-proof functions, and installed with material level sensors for real-time monitoring of the inventory, such as urea silos with a capacity of up to 50-100 cubic metres, potassium chloride silos with a capacity of 30-80 cubic metres, and so on.
- Conveying equipment: The combination of belt conveyor and bucket elevator is used to accurately convey the raw materials from the conveyor to the raw material silo to ensure the continuity and high efficiency of raw material supply.
- Vibrating screen: to effectively remove large impurities and lumps in the raw material, the screen aperture can be flexibly adjusted between 1 – 5 mm according to the raw material to ensure uniformity of raw material particle size.
- Crusher (optional): For raw materials with serious lumps or large particles, such as some potash fertilisers, it can be equipped with jaw crusher and hammer crusher for crushing to meet the production requirements.
Batching equipment
- Batching Scale: High precision electronic batching scale is composed of load cell, instrument, control system and feeding device, the accuracy of load cell is up to ±0.1%, the instrument can display, store and transmit data, the control system can accurately control the feeding device according to the instruction of recipe, the accuracy of batching is within ±0.5%, the feeding device can choose screw, belt or vibrating feeder according to the raw materials.
- Batching control system: professional computer batching control system with functions of recipe management, production task ordering, equipment monitoring, data collection and analysis, etc. Operators can conveniently operate and monitor the system in the central control room to ensure accurate and efficient batching.
Mixing equipment
- Biaxial mixer: the body of high-quality carbon steel or stainless steel, biaxial paddle reverse rotation, so that the raw materials in a short period of time fully mixed, mixing uniformity of more than 95%, the discharge door is located at the bottom of the pneumatic or electric control, unloading fast and less residue.
- Rotary drum mixer (optional): composed of cylinder body, carrier wheel, block wheel, transmission device, etc., the cylinder body made of carbon steel or stainless steel, the internal set of coping or baffle to enhance the mixing effect, the cylinder rotates to drive the raw material tumbling convection mixing, simple structure, reliable operation, easy maintenance, suitable for large-scale continuous production.
Granulation equipment
- Rotary drum granulator (optional): It consists of cylinder, tray, block wheel, transmission device, etc. The material is carbon steel or stainless steel, and there is a coping board or baffle board inside. After feeding, binder solution is sprayed, and the material rolls and agglomerates into granules, and the parameters can be adjusted to the size and shape of the granules.
- Disc granulator (optional): composed of disc, bracket, transmission device, etc. The disc rotates at an angle. Feeding and spraying binder and auxiliary materials at the same time, the material rolling into particles, particles of high roundness, flexible operation, small investment.
- Extruding granulator (optional): it is composed of roller, transmission device, feeding device and so on. It is suitable for all kinds of powdery raw materials (such as urea, phosphate fertiliser, potash powder and organic fertiliser powder, etc.), the raw materials are rolled into shape with good granule strength, and it can deal with some difficult granulation raw materials.
Cooling and screening equipment
- Counter-current cooler: the body is equipped with cooling duct and material channel, cooling fan sends cold air to reverse cooling, the discharge device is stable discharge, the cooled particles are around room temperature, good stability and water resistance.
- Air-cooled cooler (optional): fan, cooling duct and conveying device, simple structure, suitable for small-scale or low requirements of the cooling scene.
- Vibrating screen: double or multi-layer screen (stainless steel wire or perforated plate), according to the specifications of the finished product to choose the aperture, vibration motor drive screening, to remove unqualified large particles, fine powder and sticky particles, to ensure that the finished product is uniform and complete.
Coating equipment(optional)
- Coating machine: such as spray coating coating machine, roll coating coating machine and fluidised bed coating machine, etc., according to the process selection, the coating material (resin, sulphur, wax, etc.) will be uniformly wrapped on the surface of the granule, to improve the performance of the fertiliser.
- Coating material storage and conveying system: the coating material is stored in tanks or silos, with screw pumps and other conveying equipment, to prevent moisture and deterioration, and stable material supply.
Bagging and Palletising equipment
- Bagging machine: automatic bagging machine (granule or powder) according to specifications and speed, including feeding, metering, packaging, sealing and coding devices, packaging speed of 5 – 20 bags / minute, plastic woven bags, paper bags or composite film bags.
- Palletising equipment: Palletising robots or automatic palletisers to place bags according to preset patterns and layers, facilitating forklift handling and warehouse management, and improving the efficiency of logistics and space utilisation.
Production Process of Compound Fertiliser Granulation Production Line
Production process
Raw material receiving and cleaning
Raw materials are transported to the plant and unloaded into the receiving area. After conveying into the vibrating screen in addition to large particles of impurities, and then by the magnetic separator in addition to magnetic metal impurities, into the raw material warehouse.
Crushing (optional)
According to the requirements of the formula, the raw materials from the warehouse through the conveyor into the crusher. Crushed to the appropriate particle size into the batching bin.
Batching
The mixer stirs the raw materials thoroughly to make the nutrients evenly distributed. Mixture into the granulator.
Mixing
The mixing machine will mix the ingredients fully, so that the various nutrients are evenly distributed in each grain of feed. The evenly mixed material enters into the tempering device through the conveying equipment.
Granulation
According to the selected granulator (drum, disc or extrusion) to make the material into granules. Pellets into the drying equipment.
Cooling
The drying equipment removes excess moisture from the pellets to a standard of 2% - 5%. The dried pellets are fed into the cooling and sieving process.
Cooling and sieving
The cooler will cool the particles to room temperature and improve the stability. Vibrating sieve removes rejected products and qualified granules go to film coating (if any) or packaging.
Coating (optional)
If the film is wrapped, the particles will be wrapped with film material in the film wrapping machine. The coated granules will be packed.
Packaging and Palletising
Pellets are bagged and packed to specification weight and the finished product is warehoused or shipped. If palletising is required, the packaged product will be palletised by the palletising equipment for storage and transport.
Raw Material Type of Compound Fertiliser Granulation Production Line
Raw material type
Our livestock pellet feed production line is suitable for a wide range of ingredients, including but not limited to the following categories:
Nitrogen fertiliser
Urea, ammonium chloride, etc., to promote stem and leaf growth and photosynthesis.
Potassium fertiliser
Potassium chloride, potassium sulphate, etc., increase crop resistance, improve fruit quality and yield.
Phosphorus fertiliser
Monoammonium phosphate, calcium superphosphate, etc., for root development, flowering and fruiting, and seed maturity.
Trace element fertiliser
Boron fertiliser, zinc fertiliser, molybdenum fertiliser, etc., to prevent deficiency diseases and improve crop quality and yield.
Organic Fertiliser Raw Material
Livestock and poultry manure, humic acid, plant straw and other powders, change the soil structure and fertility.
Finished Product Specifications of Compound Fertiliser Granulation Production Line
Finished product specifications
Pellet shape
Commonly cylindrical, other shapes can be customised according to customers’ requirements, such as square, triangular, etc.
Pellet size
Depending on the type of poultry 1-2 weeks old 1.5-2 mm, 3-4 weeks old 2-3 mm, after 5 weeks old 3-5 mm.
Pellet hardness
The hardness (50 – 70 Newton) ensures that the pellets do not break or produce excessive powder during transport, storage and feeding.
Nutrition
Scientifically formulated to meet the poultry’s needs for protein, energy, vitamins, minerals and other nutrients.




Schematic Diagram of Production Process of Compound Fertiliser Granulation Production Line
Production Process Diagram
