研究了三烷基氧化膦(TRPO)-磷酸三丁酯(TBP)-煤油萃取体系对氰化浸金液中低浓度金(Ⅰ)的萃取和反萃取能力,结果表明,尽管TRPO体系中添加TBP对金(Ⅰ)的萃取率影响很小,但一定量的TBP能提高体系的反萃效果.考察了料液pH值、硫酸锂浓度等因素对萃取率的影响,探讨了不同的反萃温度、反萃相比对负载有机相中金(Ⅰ)的反萃效果.结果表明,采用TRPO-TBP-煤油组成的有机相,对金(I)质量浓度为9.5 mg/L、盐析剂硫酸锂浓度为1.0 mol/L的碱性氰化液在相比A/O=1∶1条件下进行萃取时,金(Ⅰ)的单级萃取率可达95%以上;反萃温度越高,相比(A/O)越大,反萃效果越好,可以将大部分金(Ⅰ)反萃出来.
参考文献
[1] | 卢宜源;宾万达.贵金属冶金学[M].长沙:中南工业大学出版社,1994:135. |
[2] | 张天喜;李文钧;吴瑾光 等.双水相体系从碱性氰化液中萃取分离金研究[J].化工学报,2000,51:97-100. |
[3] | 谢羽飞,李明玉,林潮平,郑培楷.N235协同萃取碱性氰化浸金溶液中的金(Ⅰ)[J].暨南大学学报(自然科学与医学版),2007(01):96-99,104. |
[4] | 潘路,鲍霞,魏亦军,储昭荣.盐酸胍从碱性氰化液中萃取金及机理研究[J].矿冶工程,2006(05):61-64,67. |
[5] | Martínez S;Navarro P;Sastre A M et al.The solvent extraction system Au(Ⅲ)-Cyanex471X[J].Hydromentallurgy,1996,43:1-12. |
[6] | 龚钰秋,夏世华,姜美春.TBP-TPPO二元中性体系对Au(Ⅲ)的协同萃取[J].贵金属,1988(01):12-17. |
[7] | Miller J D;Mooiman M B .Selective solvating extraction of gold from alkaline cyanide solution by alkyl phosphorus esrers[J].Separation and Technology,1987,22(02):487-502. |
[8] | F.J. Alguacil .The phosphine oxides Cyanex 921 and Cyanex 923 as carriers for facilitated transport of gold(I) cyanide aqueous solutions[J].Hydrometallurgy,2002(1/3):117-123. |
[9] | Alguacil F J;Caravaca C;Martínez S et al.The phosphine oxides Cyanex923 and Cyanex925 as extractants for gold(I) cyanide aqueous solutions[J].Hydrometallurgy,1994,36:369-383. |
[10] | 李奇伟,余建民,陈景.用硼氢化钠和硫脲从TBP-CTMAB-C12H26载金有机相中反萃金的研究[J].贵金属,2002(03):31-34. |
[11] | Pan Xuejun,Chen Jing.Study on Gold(Ⅰ) Solvent Extraction from Alkaline Cyanide Solution by TBP with Addition of Surfactant[J].稀有金属(英文版),1999(02):88-96. |
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