草酸反萃沉淀法从负载钇的P507中提取富钇  

Extraction of Yttrium-rich from P507 Loaded with Yttrium by Oxalic Acid Stripping

作　　者：伍莺[1] 周洁英[1] 胡小洣 张积锴 陈冬英[1] WU Ying;ZHOU Jie-ying;HU Xiao-mi;ZHANG Ji-kai;CHEN Dong-ying(Ganzhou Nonferrous Metallurgy Research Institute,Ganzhou 341000,Jiangxi,China)

机构地区：[1]赣州有色冶金研究所,江西赣州341000

出　　处：《有色金属（冶炼部分）》2020年第8期68-71,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家科技部转制科研院所创新能力专项(2014EG115016);赣州市产学研合作科技创新重点项目(赣市财教字[2016]15号);赣州市科技创新人才计划项目(赣市科发[2018]50号)。

摘　　要：研究了草酸反萃并直接沉淀负载富钇的P507有机相中富钇的工艺参数,考察了草酸反萃富钇过程中草酸用量、反萃温度、反萃相比O/A、反萃时间、反萃级数对稀土反萃率的影响。结果表明,草酸反萃最佳的工艺参数为:草酸用量为理论值的130%、反萃温度25℃、O/A=1/1、反萃时间20min、反萃级数11级,在此条件下,富钇稀土反萃率为99.45%,所得富钇产品质量为TREO>98.0%、Cl^-<0.05%、残碳0.042%。Process parameters of oxalic acid stripping and direct precipitation loading of yttrium-rich P507 organic phase were studied.Effects of oxalic acid dosage,stripping temperature,O/A,stripping time,and stripping series on RE stripping rate were investigated.The results show that stripping rate of yttriumrich rare earth is 99.45%and TREO in yttrium-rich product is 98.0%above with Cl^-<0.05%and residual carbon of 0.042%under the optimum conditions including oxalic acid dosage of 130%of theoretical value,stripping temperature of 20℃,O/A=1/1,stripping time of 20 min,and stripping series of 11.

关 键 词：富钇 草酸 反萃 沉淀 P507 

分 类 号：TF845.2[冶金工程—有色金属冶金]