| 228 | 3 | 27 |
| 下载次数 | 被引频次 | 阅读次数 |
研究了用皂化P507从废催化剂浸出液中萃取铝,再经硫酸反萃取、蒸发结晶制备水合硫酸铝,考察了萃取、反萃取过程中几种主要因素对Al3+回收的影响。结果表明:以皂化率45%的25%P507+10%正戊醇+65%260~#溶剂油为萃取剂,在料液中Al3+、Mg2+、Ni2+质量浓度分别为2 g/L、50 mg/L和10 mg/L,料液pH=1.5,萃取相比(Vo/Va)=1/1,萃取时间3 min条件下,Al3+、Mg2+、Ni2+萃取率分别为99.35%、2.83%、0.56%;负载铝的有机相用硫酸反萃取,在硫酸溶液浓度3 mol/L、反萃取相比(Va/Vo)=1/1条件下,Al3+反萃取率为95.13%;该反萃取液以蒸发结晶法制备水合硫酸铝,其质量符合HG/T 2225—2010标准Ⅰ类产品要求。
Abstract：The hydrated aluminum sulfate was prepared by solvent extraction of Al3+ from leaching solution of spent catalyst using saponified P507 and stripping Al3+from loading organic phase using H_2SO4 solution and evaporation crystallization.The effect of several main factors on the recovery of Al3+ during extraction and stripping were examined.The results show that using 25%P507+10%n-pentanol+65%260~# solvent oil system of which saponification rate is 45% as extractant,under the conditions of Al3+、Mg2+、Ni2+ concentration of 2 g/L、50 mg/L and 10 mg/L, respectively,feed liquid pH of 1.5,phase ratio(Vo/Va) of 1/1,extraction time of 3 min,the extraction rates of Al3+、Mg2+ and Ni2+ are 99.35%、2.83% and 0.56%, respectively;Al3+ is stripped using H_2SO4 solution under the conditions of H_2SO_4concentration of 3.0 mol/L,phase ratio(Va/Vo) of 1/1,the Al3+stripping rate is 95.13%.The stripping solution is vaporized to crystallize aluminum sulfate hydrate which meets the quality requirements of class Ⅰ products of HG/T 2225—2010.
[1] BAI P,ETIM U J,YAN Z,et al.Fluid catalytic cracking technology:current status and recent discoveries on catalyst contamination [J].Catalysis Reviews-Science and Engin-eering,2019,61(3):333-405.
[2] 卢国俭,邹翔,朱英杰,等.从废石油裂解催化剂中回收稀土试验研究[J].湿法冶金,2016,35(6):498-502.
[3] 卢国俭.用还原—酸浸—沉淀工艺从废FCC催化剂中回收稀土[J].湿法冶金,2018,37(5):398-401.
[4] NGUYEN L P,PHAM Y T H,NGO P T,et al.Production of high purity rare earth mixture from iron-rich spent fluid catalytic cracking(FCC) catalyst using acid leaching and two-step solvent extraction process[J].Korean Journal of Chemical Engineering,2018,35(5):1195-1202.
[5] 武汉理工大学.一种从FCC废催化剂制备硫酸铝铵的方法:201810253731[P].2018-07-27.
[6] WANG J Y,HUANG X W,WANG L S,et al.Kinetics study on the leaching of rare earth and aluminum from FCC catalyst waste slag using hydrochloric acid[J].Hydromet-allurgy,2017,171(5):312-319.
[7] 巫树锋,赵琦,荣树茂,等.废催化裂化催化剂中稀土和铝元素的综合利用研究[J].石化技术与应用,2015,33(4):296-300.
[8] TSAKIRIDIS P E,AGATZINI-LEONARDOU S.Solvent extraction of aluminum in the presence of cobalt,nickel and magnesium from sulphate solutions by Cyanex272[J].Hydrometallurgy,2005,80(1):90-97.
[9] ICHLAS Z T,IBANA D C.Process development for the direct solvent extraction of nickel and cobalt from nitrate solution:aluminum,cobalt,and nickel separation using Cyanex272 [J].International Journal of Minerals,2017,24(1):37-46.
[10] 崔佳娜,王明.稀土萃取分离皂化工艺研究进展[J].稀有金属与硬质合金,2017,45(2):1-5.
[11] 代梦雅,张亚茹,张可,等.用溶剂萃取—沉淀法从废锂离子电池正极材料中回收钴镍锂[J].湿法冶金,2019,38(4):276-282.
[12] 桑椿媛,宁志强,谢宏伟,等.Cyanex272深度净化氯化镍溶液除去杂质钴的研究[J].稀有金属,2019,43(6):645-651.
[13] 郝喜才,娄童芳.从硫酸工业废催化剂中回收钒硅钾试验研究[J].湿法冶金,2017,36(4):275-280.
[14] 刘平阳,谈定生,丁伟中.用P204从不锈钢酸洗污泥浸出液中萃取重金属试验研究[J].湿法冶金,2018,37(1):50-54.
[15] 李治国,柳召刚,孙祥.混合稀土料液中环烷酸萃取分离稀土和铝的研究[J].有色金属(冶炼部分),2019(11):38-41.
[16] WANG Y B,WANG Y L,SU X,et al.Complete separation of aluminum from rare earths using two-stage solvent extraction[J].Hydrometallurgy,2018,179(5):181-187.
[17] 周洁英,杨新华,洪侃,等.从稀土分解液中连续去除铁、铝[J].湿法冶金,2016,35(6):513-516.
[18] WU W Y,LI D,ZHAO Z H,et al.Formation mechanism of micro emulsion on aluminum and lanthanum extraction in P507-HCl system[J].Journal of Rare Earths,2010,28(S1):174-178.
基本信息:
DOI：10.13355/j.cnki.sfyj.2021.01.005
中图分类号:X742;TF821
引用信息:
[1]种轲李尧,朱炳龙,余人杰,等.用微乳液从废催化剂浸出液中分离铝[J].湿法冶金,2021,40(01):20-25.DOI:10.13355/j.cnki.sfyj.2021.01.005.
基金信息:
江苏省研究生科研与实践创新计划项目(SJCX19_0765)
2021-01-08
2021-01-08
2021-01-08