While producing the single super phosphate fertilizer, the sulphuric acid and ground phosphate rock have to be mixed together firstly, and then allow the mixture to be cured in the curing room until it is fully cured. During the curing process, the SSP fertilizer granulator plant will recycle the waste gas which contains fluorine, and finally, it granulates and dries the material to get the granualated single super phosphate fertilizer. More detailed production process is illustrated in the process flow diagram shown on this page.
During curing process, the mixture should be continuously stirred to increase water evaporation speed and reduce the material temperature, thus ensuring the successful and smooth proceeding of the following production process and improving the material’s physical property. The curing period typically lasts for 3 to 15 days. After curing, the single super phosphate still contains some free phosphoric acid (5.5%-8% P2O5) which brings difficulties in the fertilizer transportation, storage, and application. Therefore, the material has to be neutralized before leaving factory, so as to remove the phosphoric acid.
The GSSP compound fertilizer production plant supports two kinds of neutralization methods. One is by adding some materials which can act with phosphoric acid rapidly, such as the limestone, bone meal, ground phosphate rock, and more. The other is to remove the phosphoric acid by ammoniation. During ammoniation process, the dosage of ammonia or ammonium salts has to be strictly controlled. After phosphoric acid neutralization, the single superphosphate comes with improved physical property, and offers reduced moisture absorption and agglomeration. After ammoniation, the fertimizer offers increased nitrogen content, which ensures better fertilizing effect
Due to their stable performance and simple operation, our compound fertilizer rotary granulator are widely used in Vietnam, Singapore, Malaysia, Indonesia, India, Pakistan, Iran, Turkey, Jordan, Egypt, Myanmar, Bangladesh, Thailand, Nigeria, Saudi Arabia, among many other countries. Some of our products are also entered into European and American markets.
Depending on our 50 years’ manufacturing experience, our company has obtained ISO9001:2008, ISO9001:2000 certifications and passed ABS Quality Evaluations.