摘要
研究了硝酸钠-硫氰酸铵-罗丹明6G液-固体系浮选分离铅（Ⅱ）的行为及其与常见离子分离的条件。结果表明，在1．0gNaNO3存在下，当0．1mol／L硫氰酸铵溶液和1．0×10^-3mol／L罗丹明6G（Rh6G）溶液的用量分别为0．5mL和1．0mL时，体系中形成的不溶于水的NH4SCN—Rh6G-Pb三元缔合物可浮于盐水相上形成界面清晰的液-固两相，从而使Pb^2＋被定量浮选，而Zn^2＋，Mn^2＋，Co^2＋，Ni^2＋，Al^3＋，Fe^2＋等离子在该体系中不被浮选，实现了Pb^2＋与这些离子的定量分离。对合成水样进行了定量浮选分离测定，浮选率为93．6％～108．7％。
The liquid-soild flotation separation behaviour of Pb^2＋ in sodium nitrate-ammonium thiocyanate-rhodamine 6 G （Rh6G） system and the conditions for the separation of Pb^2＋ were studied. The results showed that with the amount of 0.5 mL of the solution of 0.1 mol/L NH4SCN and 1.0 mL of the solution of 1.0×10^-3 mol/L Rh6G, the ternary association complex of NH4SCN-Rh6G-Pb floated above the salt-water and formed liquid-solid phase with clear interface in presence of 1.0 g NaNO3. In this condition, Zn^2＋, Mn^2＋ ,Co^2＋, Ni^2＋, Al^3＋, Fe^2＋ could not be floated and Pb^2＋ could be floated quantitatively. This method has been used for the flotation separation of trace Pb^2＋ in synthetic water samples, and the flotation yield of lead is 93.6%-108.7%.
出处
《冶金分析》
CAS
CSCD
北大核心
2008年第1期48-51,共4页
Metallurgical Analysis
基金
2005年嘉应学院科学研究基金资助(05KJZ02)
关键词
铅(Ⅱ)
液-固浮选分离
硝酸钠
硫氰酸铵
罗丹明6G
lead（Ⅱ）
liquid-solid flotation separation
sodium nitrate
ammonium thiocyanate
rhodamine 6G
