摘要
本文研究了Ｄ_００１大孔阳离子强酸树脂从Ｈ_２ＳＯ_４－ＣＳ（ＮＨ_２）_２溶液中，富集及分离Ａｕ（Ｉ）、Ａｇ（Ｉ）的性能。表明在ｐＨ＝２．０左右，树脂对Ａｕ（Ｔｕ）￣＋_２、Ａｇ（Ｔｕ）￣＋_２（Ｔｕ＝硫脲）有良好的吸附性能，Ａｕ和Ａｇ的吸附容量分别为６１．１８ｍｇ／ｇ－Ｒｅｓｉｎ和９９．１１ｍｇ／ｇ—Ｒｅｓｉｎ。负载柱上的Ａｕ、Ａｇ可分别用ＮａＣＮ—ＮａＯＨ和Ｈ_３ＢＯ_３－ＮａＯＨ－Ｎａ_２Ｓ_２Ｏ_３定量洗脱。可进行一定程度的Ａｕ、Ａｇ分离。
In this paper, the absorption and separation properties of Au (I)-thiourea and Ag(I)-thiourea complex by D_001 macroporous stronge acid resign from wear acid solution have been investigated. The results show that the resign can effectively absorb Au(Tu)^+_2 and Ag(Tu)^+_2 ions(Tu=thiouvea) at pH of solution about 2. 0, and static saturated absorption capacity of resign can be 61. 18 mg/g-resin and 99. 11 mg/g-resign for Au and Ag resistively. The Au(Tu)^+_2 and Ag(Tu)^+_2 absorbed can be quantitatively eluted with 0. 1 mol/L NaOH-0. 1 mo1/L NaCN and 1 mol/L Na_2S_2O_3-H_3BO_3-NaOH respectively. The D_001 macroporous ion exchange resin is feasible for the separation of Au and Ag.
关键词
大孔阳离子树脂
硫脲
金
银
分离
湿法冶金
D_(001) macroporous stronge acid resin
thiouvea
gold
silrer
separation
