十六烷基三甲基溴化铵硫氰酸铵-氯化钠体系浮选分离钌(Ⅲ)

Separation of Ruthenium(Ⅲ) by sodium chloride-Ammonium Thiocyanate-cetyltrimethylammonium Bromide Floatation System

在水溶液中 ,Ru(Ⅲ )与硫氰酸铵、十六烷基三甲基溴化铵形成不溶于水的三元缔合物。在少量NaCl存在下 ,此三元缔合物沉淀浮于盐水相上层形成界面清晰的液 固两相 ,当溶液中硫氰酸铵、十六铵基三甲基溴化铵和氯化钠的浓度分别为 0 .2 0mol/L、1× 1 0 -3 mol/L、0 .1g/mL ,pH =5 .0时 ,Ru(Ⅲ )被定量浮选。Cr(Ⅲ )、Mn(Ⅱ )、Al(Ⅲ )、Ni(Ⅱ )、Co(Ⅱ )、Fe(Ⅱ )、Au(Ⅲ )离子在该体系中不被浮选 ,从而使Ru(Ⅲ )与这些离子定量分离 ,对合成水样进行的定量浮选分离测定 ,结果满意。

The flotation separation behavior of Ru(Ⅲ) with sodium chloride-ammonium thiocyanate-cetyltrimethylammonium bromide system and the conditions for the separation of Ru(Ⅲ) from other metal ions were studied. It shows that Ru(Ⅲ) can be separated from Cr(Ⅲ), Mn(Ⅱ), Al(Ⅲ), Ni(Ⅱ), Co(Ⅱ), Fe(Ⅱ), Au(Ⅲ) by flotation when the concentrations of ammonium thiocyanate, cetyltrimethylammonium bromide and sodium chloride in system (pH=5.0) are 0.02 mol/L, 1×10 -3 mol/L, 0.1 g/mL, respectively.