How Are Perfect Fertilizer Granules Made? The Magic of Compaction!

. With the ability to incorporate over 20 different materials—including essential trace elements like boron, iron, copper, zinc, and manganese—this method is both versatile and efficient.

1. Storage and Precise Measurement

Raw materials such as urea, ammonium phosphate, and potassium chloride are elevated and conveyed into storage bins. The complexity of the mixing system depends on the fertilizer formula, but accuracy is always key.

2. The Heart of the Process: Compaction

This is where the real magic happens. A specialized fertilizer compaction machine, also known as a roller press granulator, exerts tremendous pressure on the mixed powder. As the material passes between two counter-rotating rollers, it’s compressed into a solid plate. The pressure builds, then releases, forming dense sheets ready for the next stage.

3. Crushing and Sizing

The compacted plates are pre-crushed and screened into desired particle sizes. Fine particles are recycled back into the mix, while oversized granules are crushed again. Proper selection of crushers and screens is crucial for economic efficiency.

4. Polishing and Anti-Caking Treatment

Finally, the granules are polished in a rotating drum to smooth edges. Anti-dust and anti-caking agents are added to ensure a clean, free-flowing final product. The result? High-quality, uniform fertilizer granules ranging between 1-4mm.

For single-component fertilizers like granular potassium or ammonium sulfate, the process is even simpler—requiring less equipment and lower investment. Thanks to the efficiency of the fertilizer compaction machine, producing high-quality granules has never been easier!