硝酸钠存在下碘化钾-十六烷基三甲基氯化铵-水体系浮选分离铅(Ⅱ)的研究

Study on flotation separation of lead(Ⅱ)by potassium iodide-cetyltrimethyl ammonium chloride-water system in the presence of sodium nitrate

研究了硝酸钠存在下碘化钾-十六烷基三甲基氯化铵-水体系浮选分离铅(Ⅱ)的行为及其与常见离子分离的条件。结果表明,控制pH4 0,在1 0gNaNO3存在下,当0 1mol/L碘化钾和1 0×10-2mol/L十六烷基三甲基氯化铵溶液的用量分别为2 0mL和1 0mL时,Pb2+可被碘化钾-十六烷基三甲基氯化铵-水体系浮选,而Co2+,Zn2+,Mn2+,Ni2+,Fe2+,Al3+等离子在该体系中不被浮选,据此实现了Pb2+与这些离子的定量分离,对合成水样进行的定量浮选分离,结果满意。

The flotation separation behaviour of lead(Ⅱ)by potassium iodide-cetyltrimethyl ammonium chloride-water system in the presence of sodium nitrate and the conditions for the separation of lead(Ⅱ)from other metal ions were studiedThe results showed that in the presence of 10g NaNO3,20mL KI(01mol/L)and 10mL CTMAC(001mol/L),Pb2+ could be floated by potassium iodide-cetyltrimethyl ammonium chloride-water system,and Co2+,Zn2+,Mn2+,Ni2+,Fe2+,Al3+ could not be floated,so Pb2+ could be separated completely from Co2+,Zn2+,Mn2+,Ni2+,Fe2+,Al3+ by flotation at pH40This method has been used for the flotation separation of Pb2+ in the sample of synthetic water with satisfactory results