捕收剂烷基二醚胺对菱锌矿、石英和方解石选择性浮选的影响

摘要

通过单矿物浮选试验和实际矿石浮选试验考察了烷基二醚胺(GE?609)做捕收剂时,菱锌矿、石英和方解石的浮选分离.结果表明,GE?609对3种矿物均有良好的捕收性能,浮选无选择性.硫化钠能增强菱锌矿和方解石的浮选但抑制石英.此外,水玻璃和六偏磷酸钠均对方解石表现出良好的选择性抑制作用.实际矿石浮选试验表明,最终闭路试验获得Zn品位为23.51%、回收率为71.02%的锌精矿.通过动电位测试和红外光谱分析考察了GE?609在菱锌矿表面的吸附,结果表明,GE?609在菱锌矿表面的吸附包括静电吸附和化学吸附,且硫化钠的存在增强了BGE?609在菱锌矿表面的吸附.%The flotation separation of smithsonite from calcite and quartz using a alkyl diamine ether (GE?609) as the collector was investigated through micro-flotation experiments and the real ore flotation experiments. The results show that GE?609 exhibits good collecting capability to three minerals without selectivity. The presence of sodium sulfide enhances the flotation of smithsonite and calcite while inhibits quartz. Moreover, both sodium silicate and sodium hexametaphosphate exhibit good selective inhibition to calcite. The real ore test results show that a zinc concentrate containing 23.51% Zn with the recovery of 71.02% is obtained in the closed-circuit test. To understand the adsorption of GE?609 on smithsonite surface, zeta potential measurement and FTIR analysis were carried out, and the results indicate that the collector GE?609 can adsorb on smithsonite surface through both electrostatic adsorption and chemical adsorption, and the presence of sodium sulfide enhances the adsorption of GE?609.