某铜铅锌硫化矿浮选分离试验研究

Experimental Study on Flotation Separation of Copper-Lead-Zinc Sulfide Ore

以云南某铜铅锌硫化矿为研究对象,采用铜-铅-锌全优先浮选工艺,通过原矿细磨和铅粗精矿选择性再磨强化矿物单体解离,充分利用组合抑制剂亚硫酸钠+硫酸锌的协调效应和选择性,捕收剂Z-200、乙硫氮及BK906的高选择性,在适宜工艺参数下,获得了铜品位22.78%、铜回收率83.28%、含铅3.01%、含锌4.23%的铜精矿,铅品位75.86%、铅回收率82.75%、含铜0.17%、含锌1.64%的铅精矿和锌品位51.87%、锌回收率93.16%、含铜0.24%、含铅0.31%的锌精矿。

A study on the separation of a copper-lead-zinc sulfide ore from Yunnan was presented by adopting a Cu-Pb-Zn full selective flotation process. The mineral liberation degree was enhanced by adopting fine grinding of raw ore and selective regrinding of lead roughing concentrate. A combined usage of depressants sodium sulfite and zinc sulfate benefited the synergistic effect and selectivity in depressing, and collectors Z-200, ethionitrogen and BK906 exhibited high selectivity. Under optimized parameters, a copper concentrate with Cu grade of 22.78%, Cu recovery of 83.28%, Pb content of 3.01% and Zn content of 4.23%, a lead concentrate with Pb grade of 75.86%, Pb recovery of 82.75%, Cu content of 0.17% and Zn content of 1.64%, and a zinc concentrate with Zn grade of 51.87%, Zn recovery of 93.16%, Cu content of 0.24% and Pb content of 0.31%, were obtained.