低品位高滑石型钼矿高效分离工艺研究

Efficient Separation Process for Low⁃Grade High⁃Talc Molybdenum Ore

针对河南某高滑石型难选辉钼矿脱泥流程中钼损失量大、钼和滑石分离困难的问题,在脱泥工艺中添加一定的ZN-J1有效降低了辉钼矿在脱泥工段中的损失,以水玻璃+ZN-P1作为分离工艺的组合抑制剂,在原矿Mo品位0.116%、硫化钼占比83.53%、滑石相对含量14.0%条件下,采用“脱泥-钼预浮选-再磨-钼与滑石分离”的工艺流程,全流程闭路试验得到了钼精矿品位47.68%、钼回收率75.41%的优良指标。

In response to the problems of high molybdenum loss and difficulty in molybdenum/talc separation existing in the desliming process of a high talc⁃type molybdenite ore from Henan,ZN⁃J1,a molybdenum depressant,was introduced in the desliming section to minimize efficiently the molybdenum loss.The feed ore with Mo grade of 0.116%,molybdenum sulfide percentage of 83.53%and talc content of 14.0%was processed by adopting a flowsheet,consisting of desliming,pre⁃flotation of molybdenum,regrinding,and molybdenum/talc separation,with a combination of sodium silicate and ZN⁃P1 as depressant.A closed⁃circuit test with the whole process produced a molybdenum concentrate with Mo grade of 47.68%and Mo recovery of 75.41%,respectively.