乳酸黄原酸钠合成及其对黄铁矿与黄铜矿抑制作用机理研究.docx

乳酸黄原酸钠合成及其对黄铁矿与黄铜矿抑制作用机理研究 易#T,熊道陵m （江西理工大学,a.资源与环境工程学院；b.冶金与化学工程学院，江西簸州341000） 摘要：通过研究不同工艺条件对合成乳酸黄原酸钠的影响，结果显示乳酸黄原酸钠合成的 最佳工艺条件为乳酸、CS2和NaOH摩尔比为1:1:2.1,反应温度为40°C,反应时间为4h。 在该条件下，产物产率达到59.25%o利用紫外光谱和红外光谱进一步确认产物为乳酸黄原 酸钠。以天然黄铜矿和黄铁矿为研究对象，系统研究了乳酸黄原酸钠对黄铜矿和黄铁矿可浮 性的影响。利用Materials Studio软件进行模拟，从分子力学和分子动力学角度研究了犯酸 黄原酸钠与黄铜矿、黄铁矿表面作用体系能量变化，模拟结果表明，乳酸黄原酸钠对黄铁矿 抑制作用显著，而对黄铜矿抑制作用较差。红外光谱分析进一步验证了模拟结果。 关键词：乳酸黄原酸钠；可浮性；黄铜矿；黄铁矿；抑制作用 中图分类号：T 文献标志码：A Synthesis of sodium lactate xanthate and its inhibition for pyrite and chalcopyrite Yi Chonga,Xiong Dao Linga b (a. college of resource and environmental engineering; b. institute of metallurgical and chemical engineering, Jiangxi university of scienceand technology, Jiangxi Ganzhou 341000) Abstract： The effect of different conditions on synthesizing sodium lactate xanthate has been investigated. The results observed showed that the optimum condition was the molar ratio of lactic acid, CS2 and NaOH of 1:1:2.1, the reaction temperature of 40 °C, and the reaction time of 4h. Under the optimum condition, the yield of the product reached 59.25%, which was confirmed as sodium lactate xanthate by UV spectrum and IR spectrum. The effect of sodium lactate xanthate on the floatability of natural chalcopyrite and pyrite was studied in detail. With the Materials Studio software, the energy changes of surface interaction of the systems of sodium lactate xanthate and chalcopyrite or pyrite were simulated according to the molecular mechanics and molecular dynamics. The simulation results showed that the inhibitory effect of sodium lactate xanthate for pyrite was stronger than that for chalcopyrite, which were further demonstrated by IR spectroscopic analysis results. Keywords： sodium lactate xanthate; floatability; chalcopyrite; pyrite; inhibitory 收稿时间：2017-1-2 基金项目：国家自然科学基金资助项目（）；国家级大学生创新创业训练计划资助项目（） 通信作者：熊道陵（1965?）,男，博士，教授，主要从事二次资源的综合利用方面的研究，E-mail： 铜矿石这种资源在我国有色金属矿产资源中具有较高开发价值。我国铜矿床以硫化铜 矿为主，是工业类型比较齐全的资源矿床。硫化铜矿石中有一种常见的矿石类型是铜硫共生 ⑴。抑硫浮铜的优先浮选工艺⑵是选别致密块状铜硫矿石多采用的一种方法，