METHOD FOR PRODUCING PHOSPHATE FERTILIZERS AND COMPOUND FERTILIZERS

摘要

The method for producing phosphate fertilizers and compound fertilizers is characterized by the use of ashes obtained from the mono-combustion of municipal sewage sludges. Said ashes are chemically decomposed by means of mineral acid in order to produce a phosphorus fertilizer. A compound fertilizer is produced by adding a potassium and/or nitrogen carrier to the phosphate fertilizer. The fertilizers have a granulated structure, are designed as NPK(S) fertilizers, and can be applied directly to farmland after being produced.