肥料级磷酸一铵料浆提纯制备电池级磷酸一铵研究

介绍利用肥料级磷酸一铵料浆提纯制备电池级磷酸一铵的工艺路线和条件:将肥料级磷酸一铵料浆过滤除去不溶性杂质,滤液用氨水调节pH,并加入除杂剂使杂质沉淀后过滤,再浓缩结晶得到电池级磷酸一铵;结晶母液及滤渣返回化肥系统生产化肥。此法所用原料成本低,工艺简单,得到的磷酸一铵产品纯度高,可用于生产锂电池正极材料磷酸铁及磷酸铁锂,具有较好的社会效益及经济效益。

Study on preparation of MAP for battery by purifying slurry of fertilizer MAP

The process route and conditions for the production of MAP for battery by purifying slurry of fertilizer MAP are introduced: the fertilizer MAP slurry is filtered to remove insoluble impurities, then ammonia is added into colatuie to adjust pH and purifying agent is added to precipitate impurity, through filtering, condensing crystallization, MAP for battery is gained. The crystallization solution and residue return to production of chemical fertilizers system. The method has simple process, low cost of raw materials and high purity of product, the MAP can be used to produce lithium iron phosphate cathode material and lithium iron phosphate, which can get better social and economic benefits.