| 摘要 |
A method of producing a multicomponent NPK fertilizer with a low content of chlorides and controllable K2O/P2O5 ratio in which phosphoric and sulfuric acids are reacted with ammonia water and the obtained mixture is converted with potassium chloride, characterized in that the ammonisation of the phosphoric and sulfuric acids mixture is conducted at pH from 2 to 5, and the P2O5/SO4<-2>: KCl weight ratio is maintained within the ratio from 0.5: 3: 0.5 to 2.5: 0.5: 3 with the summary salts content lower than 60 percent by weight, and the separated solid phase is filtered in vacuum, and the original solution is processed into a multicomponent fertilizer containing chlorides.
|
