利用磷化渣制备电池级磷酸铁及表征研究
Preparation and Characterization of Battery Grade Iron Phosphate Using Phosphating Slag
刘晓鸽1
作者信息
- 1. 河南佰利新能源材料有限公司,河南 焦作 454000
- 折叠
摘要
以含锌磷化渣为原料,采用磷化渣→碱浸→萃取→复分解反应→磷酸铁的工艺,制备了电池级磷酸铁.通过实验,确定出最优参数:碱浸加入氢氧化钠的量(即碱渣质量比)为 0.65 时,磷酸根浸取率可达94.8%.采用双硫脘/P204 双萃取剂,且相比为 1∶5 时,锌的萃取率可达 60.44%.复分解反应pH值为 2时,产物中铁磷物质的量比为最大值.w(Zn)=0.00048%时,磷酸根回收利用率达到79.44%.
Abstract
Battery grade iron phosphate was prepared from zinc containing phosphating slag using the process of phosphating slag →alkaline leaching → extraction → double decomposition reaction → iron phosphate.Through experiments,the optimal parameters were determined:when the amount of sodium hydroxide added to alkaline leaching(i.e.alkali residue ratio)was 0.65,the phosphate leaching rate could reach 94.8%.When using dual sulfur/P204 extractant and a ratio of 1:5,the extraction rate of zinc can reach 60.44%.When the pH value of the double decomposition reaction is 2,the amount ratio of iron and phosphorus substances in the product is the maximum value.When the w(Zn)=0.00048%,the recovery and utilization rate of phosphate ions reaches 79.44%.
关键词
磷化渣/磷酸铁/双硫脘/P204Key words
phosphating slag/iron phosphate/disulfiram/P204引用本文复制引用
出版年
2024
NETL
NSTL
万方数据