Method for directly producing battery-grade monoammonium phosphate from wet-process phosphoric acid

The invention discloses a method for directly producing battery-grade monoammonium phosphate from wet-process phosphoric acid, which comprises the following steps: by taking the wet-process phosphoric acid as a raw material, firstly adding an impurity removal agent for desulfurization, defluorination and dearsenification to achieve an impurity removal effect, then adding ammonia water into the phosphoric acid for neutralization, filtering the neutralized slurry, and heating, concentrating, crystallizing and drying the filtrate to obtain the battery-grade monoammonium phosphate. The battery grade monoammonium phosphate is obtained. The invention provides a production process capable of replacing purified phosphoric acid or hot-process acid or fertilizer-grade monoammonium phosphate, and the production process can be industrially applied, so that the production cost is really reduced. 本发明公开了一种湿法磷酸直接生产电池级磷酸一铵的方法，包括以下步骤：以湿法磷酸为原料，先加除杂剂进行脱硫、脱氟、脱砷达到除杂效果，然后向磷酸中加入氨水中和，将中和后的料浆过滤，滤液经加热浓缩、结晶、干燥，得到所述电池级磷酸一铵。本申请提供能替代净化磷酸或热