硫酸-氨水体系回收磷铁渣制备电池级磷酸铁实验研究
An Experimental Study on the Preparation of Battery Grade Iron Phosphate from the Recovery of Phosphorus Iron Slag Using Sulfuric Acid Ammonia Water System
刘晨 1钱有军 1刘金云2
作者信息
- 1. 中钢天源股份有限公司,安徽 马鞍山 243000
- 2. 安徽师范大学化学与材料科学学院,安徽 芜湖 241000
- 折叠
摘要
研究采用硫酸-氨水体系,分别考察了浸取反应阶段的n(H2SO4)∶n(Fe)、反应温度、反应时间对铁磷回收率的影响;以及合成反应阶段氨水加入时间和体系pH对磷酸铁指标的影响.实验结果表明,先在n(H2SO4)∶n(Fe)=1.5,反应温度80℃,反应时间2h条件下浸出铁、磷;再在10%氨水50 min匀速加入,生成碱式磷酸铁,在pH=1.5 的条件下进行合成反应.可制备各项物化及电性能指标优异的电池级磷酸铁.
Abstract
A sulfuric acid ammonia water system was used to investigate the effects of n(H2SO4)∶n(Fe),reaction temperature and reaction time on the recovery rate of iron and phosphorus during the leaching reaction stage.And the effects of ammonia addition time and system pH on the iron phosphate index during the synthesis reaction stage.The experimental results showed that iron and phosphorus were first leached under the conditions of n(H2SO4)∶n(Fe)=1.5,reaction temperature of 80℃and reaction time of 2 hours.Subsequently,by adding10%ammonia water continuously for 50 minutes to form basic iron phosphate at pH 1.5,the synthesis reaction was conducted.This method yields battery-grade iron phosphate with superior physical,chemical,and electrical performance metrics.
关键词
硫酸-氨水体系/磷铁渣/浸取反应/合成反应/磷酸铁Key words
Sulfuric acid ammonia water system/Phosphorus iron slag/Leaching reaction/Synthesis reaction/Iron phosphate引用本文复制引用
出版年
2024
NETL
NSTL
万方数据