Production process of compound fertilizer - Chinese compound fertilizer manufacturers

The common granulation processes for compound fertilizers include drum granulation, disc granulation, spray granulation, and tower granulation.

High concentration nitro compound fertilizer is produced by the high tower melt rotation granulation method. This technology sprays molten nitrate, phosphorus, and potassium from the top of the granulation tower, and during the process of falling inside the tower, it cools and agglomerates into particles. This is also known as the melt granulation method. In ammonium nitrate production enterprises, using the high tower melt granulation method to produce composite fertilizer has the following advantages: firstly, it can directly use concentrated ammonium nitrate solution, eliminating the spraying granulation process of concentrated ammonium nitrate solution and the crushing operation during the production of composite fertilizer from solid ammonium nitrate, simplifying the production process and ensuring production safety. The second is that the melt rotation granulation process fully utilizes the thermal energy of ammonium nitrate concentrated solution, with a low moisture content of the material and no need for drying process, greatly saving energy consumption. Thirdly, it is possible to produce compound fertilizers with high nitrogen and concentration. The surface of the product particles is smooth and round, with a high percentage of pass rate. It is not easy to clump and dissolve, which ensures that the product has a strong competitive advantage in quality and cost from the perspective of production technology.

Drum granulation, also known as drum granulation, is the most widely used type of equipment in compound fertilizer production. The formula restrictions are relatively small. Alternatively, partial spraying and partial amination can be used. The most common types of equipment, 2-3 million can be used for a production line, with a daily output of over 280-400 tons, and a good formula can reach over 500 tons. The drum granulation production process is favored by many compound fertilizer manufacturers due to its advantages such as relatively small formula restrictions, high yield, low investment, and short construction period, and is increasingly adopted by more and more compound fertilizer manufacturers.