四川绵阳某氧化铅锌矿浮选工艺研究

对四川绵阳某氧化铅锌矿进行了浮选工艺研究。采用先硫后氧、先铅后锌的选别方案,经两粗一精一扫选铅、三粗两精一扫选锌,在磨矿细度-0.074 mm粒级占90%条件下,得到了产率12.77%、铅品位66.10%、铅回收率88.23%、含锌2.87%、锌回收率3.18%的铅精矿和产率18.76%、锌品位45.32%、锌回收率73.81%、含铅1.62%、铅回收率3.18%的锌精矿,全流程铅金属总回收率91.41%、锌金属总回收率76.99%。

Flotation Technology for Oxidized Lead-Zinc Ore from Mianyang of Sichuan Province

Flotation technology for an oxidized lead-zinc ore from Mianyang City of Sichuan Province was studied. A selective flotation, namely, recovering oxidized minerals after sulfide minerals and recovering zinc minerals after lead minerals, was adopted. A closed-circuit process consisting of two stages of roughing, one stage of cleaning and one stage of scavenging was used to collect lead minerals, and an open-circuit process consisting of three stages of roughing, two stages of cleaning and one stage of scavenging was used to collect zinc minerals, with a grinding fineness of -0.074 mm 90%, which produced a lead concentrate approaching 66.10% Pb grade at 88.23% recovery and Zn content of 2.87% at 3.18% Zn recovery, with a yield of 12.77%, as well as a zinc concentrate approaching 45.32% Zn grade at 73.81% recovery, 1.62% Pb grade at 3.18% recovery, with a yield of 18.76%. It is shown that the whole process resulted in the total lead recovery at 91.41%, and the total zinc recovery at 76.99%.