超细氰化尾渣中铜铅矿物颗粒界面性质

摘要 山东某冶炼厂氰化尾渣无法实现铜铅分选，通过XRD、激光粒度仪、浮选实验、FTIR、SEM-EDS、金相显微镜等方法，研究了氰化尾渣铜铅矿物颗粒界面性质.结果表明，渣中主要矿物为方铅矿、黄铜矿、黄铁矿、闪锌矿，粒度小于38μm质量分数为95.61%.氰化尾渣中的方铅矿和黄铜矿表面含有大量油状物，此油状物被证明是机械润滑油.黄铜矿表面吸附大量润滑油，造成黄铜矿无法被氰化物抑制.细颗粒方铅矿通过疏水作用力包裹在黄铜矿表面，导致铜铅无法分选.
Abstract：The copper-lead separation of cyanide tailings from Shandong Province is hardly possible in the process of flotation. XRD， laser partide size analyzer， flotation experiment， FTIR， SEM-EDS and microscope are used to investigate the interface characteristics of lead and copper minerals. The results show that the main minerals in the cyanide tailings are galena， chalcopyrite， pyrite and sphalerite. The mineral particles smaller than 38μm account for 95.61%. The surface of chalcopyrite and galena in the cyanide tailings contains plenty of oil component and it is proved to be lubricating oil. Chalcopyrite is covered with lubricating oil and isn’t inhibited by cyanide. Ultra-fine galena particles are wrapped on the surface of chalcopyrite by hydrophobic force， and this makes the lead and copper unable to be separated.