What Is The Process Compound Fertilizer Making

The production of compound fertilizer typically involves several key steps. Here is a general overview of the process:

Raw Material Preparation

The first step is to gather and prepare the raw materials required for making compound fertilizer. These materials usually include nitrogen sources (such as urea or ammonium nitrate), phosphorus sources (such as superphosphate or phosphoric acid), and potassium sources (such as potassium chloride). Other micronutrients and additives may also be included.

Compound fertilizer made by SX equipment
Compound fertilizer made by SX equipment

Crushing and Grinding

The raw materials are often in solid form and need to be crushed and ground into fine powder to ensure uniformity in the final compound fertilizer product. This step increases the surface area of the materials and facilitates better compound fertilizer making.

Mixing and Blending

Once the raw materials are finely ground, they are mixed and blended together to achieve the desired nutrient composition of chemical fertilizer production. The proportions of nitrogen, phosphorus, and potassium are carefully controlled according to the specific formulation or desired NPK ratio.


The blended mixture is then sent to a granulation process, where it is transformed into granules or pellets. It plays an important role in the complex fertilizer production process. Granulation improves the handling and application characteristics of the fertilizer and helps control the release of nutrients. There are various granulation techniques available, including drum granulation, pan granulation, and extrusion granulation. Click here to learn more.


After drum and pan granulation, the moisture content of the chemical fertilizer granules is typically high. Drying is necessary to reduce the moisture content and stabilize the product. This can be done using rotary dryers, where hot air is circulated to remove moisture from the granules. So you can produce compound fertilizer with longer storage time.


The dried granules may still be hot after the drying process. Cooling is carried out to lower the temperature of the granules and prevent caking or clumping. Cooling is typically achieved using a rotary cooler, where cool air is blown through the granules.

Screening and Classification

The cooled and dried granules are then screened to remove any oversized or undersized particles. The granules are classified based on size to ensure consistency in the final product.

Coating and Packaging

In some cases, a coating may be applied to the fertilizer granules to improve their appearance, reduce dust formation, or modify their release characteristics. Finally, the finished compound fertilizer is packaged into bags or bulk containers for distribution and sale.

It’s important to note that the specific details of the compound fertilizer production process may vary depending on the manufacturer, the desired product characteristics, and regional regulations. The process described above provides a general framework for understanding the main steps involved in compound fertilizer production. If you want to learn more compound fertilizer making lines, you can visit https://organicfertilizerproductionline.com/compound-fertilizer-production-line/