【摘要】 经济发展对金属铜的需求量不断增大，铜矿浮选药剂的研究也随之备受关注.为研究链长对浮选性能的影响，设计合成7种不同链长的分子内二胺Salen型席夫碱捕收剂，并分析此类捕收剂对金属铜铅的选择性.研究表明：当分子内二胺链长n为2,3,4时，捕收剂与金属铜形成配合物为单体，捕收能力较强；n为5,6,7,8时，捕收剂与金属铜形成的配合物为二聚体，捕收能力较弱；此类Salen型席夫碱捕收剂对金属铜铅具有良好的选择性，可望用于金属铜铅的有效分离.更多还原

【Abstract】 With the increasing demand for copper in China’s economic development, the research of copper flotation reagent has attracted much attention. In this paper, seven kinds of salen-type Schiff bases compounds with different diamine chain length(carbon atom number n = 2,3,4,…,8) are designed and synthesized, and the influence of chain length on the flotation performance is studied, and the selectivity of collectors to copper and lead metals is analyzed. The research results show that when the chain length n of diamine in the molecule is 2,3,4, the complex formed with copper is a monomer, and the collection capacity is strong. However, when n is 5,6,7,8, the complex formed with metal copper is a dimer, and the collection capacity is relatively weak. This collector has an outstanding selectivity to copper and lead metals, and is expected to be used for effective separation of copper and lead metals.更多还原