Step into an NPK fertilizer production plant and you’ll discover that the “magic” of transforming nitrogen, phosphorus, and potassium raw material powders into uniform granules relies entirely on the  fertilizer granulator, the “shaping master.” Without it, the loose raw materials would be difficult to store and transport, and even more difficult to accurately apply to the fields. It is a truly central player in NPK fertilizer production.

Before entering the fertilizer granulator, the raw materials have already undergone numerous tests. First, the raw material crusher grinds the lumps of raw materials such as urea and diammonium phosphate into a fine powder, ensuring a uniform blend of nutrients. Then, the ingredient mixer mixes the ingredients according to strict proportions, just like a chef precisely controlling the amount of ingredients to ensure that each batch of mixture meets the nutritional requirements. The granulator’s task is to “knead” this uniform mixture into granules.

Inside the granulator, the mixed material is mixed with an appropriate amount of water or a binder. As the machine rotates and tumbles, it gradually forms granules with a diameter of 2-4 mm. These newly formed granules are still fragile and need to be immediately sent to a drum fertilizer dryer to dry out the moisture at an appropriate temperature, making the granules hard and durable. A cooler then quickly lowers the granule temperature to prevent nutrient loss caused by high temperatures. Finally, a vibration screener machine selects granules of acceptable size. Unacceptable granules are sent back to the crusher for reprocessing, achieving zero resource waste.

Two other essential “behind-the-scenes heroes” are essential to the entire production process. The dust collector removes dust generated during production, protecting worker health and preventing raw material waste. The quantitative packaging machine precisely bags qualified granules and labels them, ensuring smooth transportation of each bag of NPK fertilizer to farmland across the country. Thanks to the granulator’s shaping, and the coordinated cooperation of other equipment, NPK fertilizer is perfectly formed to aid crop growth and ensure a bountiful harvest.