云南某含金银铅锌尾矿再选试验

云南某含金银铅锌浮选尾矿中的主要有价元素为铅、锌、金、银，主要金属矿物为铁铅矾矿、铅矾、白铅矿、菱锌矿、硅锌矿、闪锌矿等，金主要为显微金，金、银的主要载体矿物为方铅矿。为确定该尾矿中有价元素的回收工艺，进行了浮选工艺研究。结果表明，试样在磨矿细度为-74 μm占83.60%的情况下，先经1粗2扫3精浮铅、再1粗2扫3精浮锌，最终获得了铅品位为41.82%、含金40.58 g/t、含银2 877.72 g/t、铅回收率为70.17%、金回收率为78.66%、银回收率为75.18%的铅精矿，以及锌品位为34.85%、含金1.92 g/t、含银183.17 g/t、锌回收率为87.47%、金回收率为13.47%、银回收率为17.28%的锌精矿。

Experiment on Reselection of a Au-Ag-Pb-Zn Tailings from Yunnan Province

Main valuable elements of a gold,silver,lead and zinc flotation tailings in Yunnan are lead,zinc,gold and sil-ver. Main metallic minerals are iron-lead-alumite,lead-alum,cerusite,bonamite,willemite,sphalerite,etc. Gold is mainly in mi-croscopic gold form. Galena is the main carrier minerals of gold and silver. In order to determine the recovery process of valua-ble elements,flotation process was studied. Results show that when grinding fineness is -74 μm 83. 6% and using one roug-hing three cleaning two scavenging lead preferential flotation,one roughing three cleaning two scavenging zinc flotation process, lead concentrate with 41. 82% Pb,40. 58 g/t Au,2887. 72 g/t Ag,recovery of 70. 17% Pb,78. 66% Au,75. 18% Ag,zinc concentrate with 34. 85% Zn,1. 92 g/t Au,183. 17 g/t Ag,recovery of 87. 47% Zn,13. 47% Au,17. 28% Ag was obtained.