氧氯化锆生产排放废酸的综合利用研究  

Research on Comprehensive Utilization of Waste Acid from Zirconium Oxychloride Production

作　　者：徐宏林 杨丽莎 孙宏骞 宋静 田亮亮[4] XU Hong-lin;YANG Li-sha;SUN Hong-qian;SONG Jing;TIAN Liang-liang(Jiangxi Kingan Hi-Tech Co.,ltd.,Nanchang 330508,China;National Engineering Research Center for Green Recycling of Strategic Metal Resources,Beijing 100190,China;Institute of Process Engineering,Chinese Academy of Sciences,Bejing 100190,China;School of Electronic Information and Elctrical En gineering,Chongqing University of Arts and Sciences,Chongqing 402160,China)

机构地区：[1]江西晶安高科技股份有限公司,江西南昌330500 [2]战略金属资源绿色循环利用国家工程研究中心,北京100190 [3]中国科学院过程工程研究所,北京100190 [4]重庆文理学院电子信息与电气工程学院,重庆402160

出　　处：《湖南有色金属》2022年第4期53-56,共4页Hunan Nonferrous Metals

基　　金：中国科学院前沿科学重点研究项目(QYZDJ-SSW-JSC021);在渝高校与中科院所属院所合作项目(HZ2021013)。

摘　　要：文章以氧氯化锆生产过程中排放的废酸为对象,开展酸回收及Sc资源回收的工艺研究。膜分离试验结果表明,可以实现废酸的回收,酸回收率可达83%,并且可很好地实现废酸中杂质的脱除;对膜分离所得低酸度、杂质含量高的残液进行溶剂萃取提Sc研究,优选的萃取条件为:相比O/A=1/2、用有机相组成为:4%P204+3%TBP+3%异十三醇+90%磺化煤油,萃取时间5 min,室温,Sc的萃取率可达99%;然后,对负载Sc的有机相进行洗涤和Sc反萃的试验研究,在NaOH浓度为3 mol/L,温度55℃条件下,得到的富集物中的Sc的含量可达80%以上。In this paper, the waste acid discharged from the production process of zirconium oxychloride is taken as the object, and the process research of acid recovery and scandium resource recovery is carried out.The experimental results of membrane separation showed that the recovery of waste acid can be achieved, the acid recovery rate can reach 83%,and the removal of impurities in waste acid can be well achieved.The solvent extraction and Sc extraction of the residual liquid with low acidity and high impurity content obtained by membrane separation were carried out.When the oil-water(O/A) was 1/2,the organic phase was 4% P204+3% TBP+3% isotridecanol +90%sulfonated kerosene, and the time was 5 min in room temperature, the extraction effect was best.The extraction rate of Sc could reach 99%.Then, the experimental research on the Sc-loaded organic phase washed and the scandium strip, with 3 mol/L NaOH solution and temperature of 55℃,the content of Sc in the obtained enrichment can reach more than 80%.

关 键 词：氧氯化锆 废酸 酸回收 溶剂萃取、Sc富集 

分 类 号：TQ171.4[化学工程—玻璃工业]