捕收剂的分子设计与绿色合成

Molecular design and green synthesis of collectors

捕收剂是矿物浮选分离过程中必不可少的药剂,研究捕收剂的分子设计与绿色合成对于提高浮选技术水平具有重要意义。综述近年来中南大学钟宏教授课题组在捕收剂的分子设计、绿色合成与浮选机理研究方面的系列成果。研究开发溶剂法合成黄原酸盐等硫化矿捕收剂的绿色合成技术,提高合成效率,改善生产环境。设计并合成异丁基黄原酸苯甲酰基酯等多种新型硫化矿捕收剂、Gemini双季铵盐等多种新型非硫化矿捕收剂及N,N-二丁基二硫代氨基甲酸乙羟肟酸等硫化?氧化矿双功能捕收剂,此外还研究选矿药剂之间的组合用药。

Collectors are essential parts in minerals flotation and separation.It is of great significance to study the molecular design and green synthesis technologies of collectors to improve the flotation technology.The new technologies for the design and synthesis of flotation collectors were studied,and the series of research achievements on molecular design,green synthesis and flotation mechanism of collectors by professor ZHONG Hong of Central South University in recent years were summarized.Green synthesis technologies of sulfide ore collectors such as xanthates with solvent method were introduced,which could improve the synthesis efficiencies and production environment.Novel sulfide ore collectors such as S-benzoyl-O-isobutyl xanthate,novel non-sulfide ore collectors such as Gemini collectors,and novel sulfide-oxidized ore collector possessed double-function such as S-[(2-hydroxyamino)-2-oxoethyl]-N,Ndibutyl-dithiocarbamate were designed and synthesized.In addition,the combination of flotation reagents was also studied.