十三种金属离子浮选行为的研究

本文研究了十三种金属离子在硫氰酸盐-氯化十六烷基吡啶(CPC)体系中的浮选行为。它是基于金属离子与硫氰酸盐(SCN-)生成络阴离子后,再与阳离子表面活性剂 CPC 形成离子缔合物而进行浮选.在各自适宜的酸度下,Fe3+,Ag+,Cu2+,Au3+,Bi3+,Cd2+,Co2+和Ni2+的浮选率为92—100%,而 Pb2+,Mn2+,Zn2+,Ca2+和Mg2+的浮选率低于20%或几乎不被浮选.浮选富集倍数较大、灵敏度高、选择性好,用于海水中微量铜和铁的测定,方法简便,结果满意.

A Study on the Ion Floataion Behaviour of 13 Metallic Ions in Thiocyanate-CPC System

authors studied the ion floatation behaviour of thirteen metallic ions in thiocyanate-CPC system,of which CPC being the cationic surfactant cetypyri- dinium chloride.At the pH suitable to each ion,Fe~(3+),Ag~+,Cu~(2+),Au~(3+),Bi~(3+), Cd~(2+),Co~(2+)and Ni~(2+) were floated separately from the solution with the yield of 92-100%;while Pb~(2+),Mn~(2+),Zn~(2+),Ca~(2+) and Mg~(2+)were floated with the yield below 20% or almost nothing can be floated.The determination was carried out by atomic absorption spectrophotometry.This method has been applied sucessfully to the determination of trace Cu and Fe in the sea water.