氯化钠-硫氰酸钾-溴化十六烷基三甲基铵体系浮选分离铂

Floatation separation of platinum by sodium chloride-kalium thiocyanate-hexadocyltrimethylammonium bromide system

研究了氯化钠-硫氰酸钾-溴化十六烷基三甲基铵体系浮选分离铂的行为及其与常见金属离子的分离条件。结果表明,当NaCl用量为1 g,0.1 mol/L硫氰酸钾(KSCN)溶液为2.0 mL,10 mmol/L溴化十六烷基三甲基铵溶液为2.0 mL,pH=4.0时,Pt(Ⅳ)能被定量浮选,而Al(Ⅲ),Co(Ⅱ),Ni(Ⅱ),Mn(Ⅱ)离子不被浮选,实现了Pt(Ⅳ)与这些离子完全分离。对合成水样进行了浮选分离测定。

The floatation separation of Pt（Ⅳ） in sodium chloride-kalium thiocyanate-hexadocyltrimethylammonium bromide system and the conditions for the separation of Pt（Ⅳ） from other common metal ions were studied. The optimum conditions of floatation as follows：NaCl 1.0 g,0.1 mol/L KSCN 2.0 mL and 10 mmol/L CTMAB 2.0 mL at pH 4.0, Pt （ Ⅳ ） was quantitatively separated from Al （Ⅲ） , Co （ Ⅱ ） , Ni（ Ⅱ ） , Mn（ Ⅱ ） under the condition mentioned above. The method has been used for the floatation separation of platinum in the synthetic sample of water and the result was satisfactory.