Making use of ammoniacal nitrogen in phosethyl-Al waste liquor replacing solid ammonium sulfate to produce aluminium ammonium sulfate,the ratio of liquid to solid is (1.

• 研究了原料制备、过滤介质、结晶方式、助剂投量对高纯硫酸铝铵生产的影响 ,提出了新的工艺路线 ,给出了最佳操作条件 ,产品完全满足用户的需求。