Slow and Controlled-release Fertilizer

Slow and Controlled-release fertilizer is a new type of fertilizer that controls the release of nutrient elements through physical or chemical means to meet the nutritional needs of plants and minimize nutrient loss as much as possible. The main advantage of controlled-release fertilizer is that it can improve the utilization rate of fertilizer, reduce the number of fertilizer applications, save labor, and reduce the impact on the environment.

The production process of Slow and Controlled-release Fertilizer generally includes the following steps

Such as rotary drum granulation production lines and disc granulation production lines.

Feel free to contact us for exclusive solutions!

Rotary Drum Granulation Production Line

Disc Granulation Production Line

The SCU Sulfur Coated Urea Production Line steps:

Selection of raw materials : Choose inorganic or organic fertilizers that contain necessary nutrients (such as nitrogen, phosphorus, potassium, etc.) as raw materials.

Ingredient matching : First, different nitrogen, phosphorus, and potassium raw materials and other required raw materials are proportioned at the ingredient station according to the formula requirements.

Mixing : The proportioned nitrogen, phosphorus, and potassium fertilizers, as well as possible fillers and additives, are mixed together to form a fertilizer mixture.

Granulation : The mixture enters the granulator with added water, and granules are formed through physical extrusion or agglomeration. Commonly used granulation equipment includes rotary drum granulators and disc granulators.

Drying : Wet granules are dried by a dryer to remove excess moisture.

Cooling : The dried granules need to be cooled to reduce the temperature and prevent granule adhesion caused by high temperatures.

Screening : After cooling, the granules are screened to separate qualified granules from unqualified powder or large granules.

Coating : Qualified granular finished products are added with conditioners or their colors are changed.

Packaging : The qualified granules are packaged for sale or use.

When applying controlled-release fertilizers, choose the appropriate application rate and timing based on crop needs and soil conditions to achieve optimal fertilizer efficiency. Using controlled-release fertilizers can more effectively provide the nutrients crops need, improve crop yield and quality, and reduce environmental impact.