氢化松香酯基阳离子捕收剂M-N的合成及浮选性能

Synthesis and flotation performance of a hydrogenated rosin ester-based cationic collector M-N

以石英纯矿物浮选回收率和季铵盐活性物含量为指标,进行了摩尔比、温度、时间等合成条件的优化.以酒钢焙烧磁铁矿实际矿石在捕收剂M-N作用下进行脱硅反浮选,所得铁精矿品位56.54%、回收率77.33%.在5~30℃条件下,浮选精矿指标稳定,耐低温性优良.捕收性能优于传统药剂十二胺和醚胺.Zeta电位和红外光谱分析表明,M-N在石英表面发生静电吸附作用和氢键作用,因此加强了浮选分离的效果.

This paper optimized the synthesis conditions such as molar ratio,temperature and time by examining quartz recovery and the active content of quaternary ammonium. The reverse-flotation results using roast-magnetite separation of Jiugang iron show that a concentrate with a grade of 56. 54% and a recovery rate of 77. 33% are obtained using M-N as collector. At 5-30 ℃,the reverse flotation result is stable,as well as the low-temperature resistance is excellent. Selectivity of M-N is superior to the traditional collector dodecylamine and ether amines. The result of Zeta potential and infrared spectroscopy reveals that the successful separation effect of M-N is due to electrostatic adsorption and hydrogen bonding on quartz.