利用含镁溶液制备磷酸铵镁的工艺探讨

Discussion on MAP preparation from magnesium-containing solution

对氢氧化镁、碱式碳酸镁沉淀后母液通过二次沉镁制备磷酸铵镁进行研究,此方法可获得磷酸铵镁缓释肥产品,提高工艺中镁的回收率,同时解决了后续苛化过程中存在的问题。

In this article,a method of MAP precipitation from magnesium contained solution after precipitation of magnesium hydroxide and basic magnesium carbonate were presented.A kind of slow release fertilizer was obtained via MAP method.Furthermore,the recovery rate of magnesium of whole process was increased and problems in subsequent causticizing treatment process were solved well.