捕收剂 DXY-1在石英表面的捕收性能及机理研究

为研究醚胺类捕收剂 DXY-1 对石英的捕收性能和机理，首先进行了单矿 物浮选试验，之后对药剂与矿物吸附前后的 Zeta 电位进行检测并用 MS 软件模拟计算。结果表明，捕收 剂 DXY-1 在常温下对石英有良好的捕收能力，pH=10 时浮选回收率最佳，可达 98.0%。基于 MS 软件的 CASTEP 模 块计算了捕收剂 DXY-1 与石英矿物表面的吸附作用能，其值为负值且低于 OH^-在石英表面的吸附能，说明 DXY-1 在 石英表面可以发生吸附且与 OH-相比，捕收剂 DXY-1 对石英的吸附作用更强。结合药剂与矿物吸附前后的 Zeta 电位检测和 MS 模拟布居数的计算结果表明，捕收剂 DXY-1 与石英（101）表面的吸附方式为静电吸附和氢键吸附 。

Collecting Performance and Mechanism of Collector DXY-1 on Quartz Surface

In order to study the collection performance and mechanism of the etheramine collector DXY-1 on quartz， first a single mineral flotation test was carried out，and then the Zeta potential before and after the adsorption of the agent and mineral was detected and simulated by MS software. The test results show that the collector DXY-1 has a good collection capacity for quartz at room temperature，and the flotation recovery rate is best at pH=10，which can reach 98.0%. The CASTEP module based on MS software calculated the adsorption energy of collector DXY-1 on the surface of quartz minerals，which is negative and lower than the adsorption energy of OH^? on the quartz surface，indicating that adsorption can occur and compared with OH? The collector DXY-1 has a stronger adsorption effect on quartz. Combined with the Zeta potential detection before and after the adsorption of reagents and minerals and the calculation results of MS simulated population numbers，it is shown that the adsorption methods of collector DXY-1 and quartz (101) surface are electrostatic adsorption and hydrogen bonding adsorption.