Ammonium sulfate is a widely used, fast-acting, sulfur-containing nitrogen fertilizer. Its powdered raw material is highly prone to moisture absorption, caking, and dust generation, creating significant inconveniences for storage, transportation, and mechanized application. The ammonium sulfate granules compaction technology employs a dry physical forming process that eliminates the need for wetting or high-temperature drying; instead, it relies on purely mechanical pressure to transform the powder into dense, uniform solid granules. This simple, efficient process represents the mainstream method for the industrial production of ammonium sulfate fertilizer.

The core of this technology lies in the principle of high-pressure plastic forming. A fertilizer granules compaction machine applies constant, high pressure to the powdered ammonium sulfate, forcing the particles to bond tightly and form stable crystalline bridges, thereby achieving solidification without chemical reactions.

Raw material pretreatment and parameter control are crucial for ensuring product quality. During production, the moisture content of the ammonium sulfate powder must be maintained within an optimal range, and a small amount of eco-friendly binder is often added to improve plasticity and enhance the granulation rate. Additionally, precise adjustment of the equipment’s roll gap—tailored to the specific properties of the ammonium sulfate—prevents issues such as loose, broken, or unevenly sized granules, ensuring product uniformity.

The complete process flow encompasses raw material screening, material blending, high-pressure extrusion, granule shaping, and classification screening. The resulting ammonium sulfate granules are hard, resistant to pulverization, and exhibit significantly improved moisture resistance, effectively eliminating the problems of dust and caking associated with the powder form. These uniform granules are ideal for mechanized application, offering a steady, even release of nutrients that maximizes fertilizer efficiency.

In summary, ammonium sulfate granules compaction technology offers low energy consumption and consistent product quality, balancing production efficiency with practical value. It is highly versatile and economically advantageous, suitable for both pure ammonium sulfate granulation and the production of sulfur-containing compound fertilizers.