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现代矿业 ›› 2024, Vol. 40 ›› Issue (06): 120-.
西藏某富银铅锌矿石铅品位为2.62%，锌品位为4.46%，伴生银品位为161 g/t。为开发利用该矿石，进行了优先浮铅—铅尾浮锌的优先浮选试验。结果表明，在磨矿细度-0.074mm占80%条件下，以石灰为调整剂、亚硫酸钠和硫酸锌为抑制剂、乙硫氮和丁基黄药为捕收剂、A5为捕收-起泡剂，经1粗2精2扫选铅，浮铅尾矿以石灰为调整剂、硫酸铜为活化剂、丁基黄药为捕收剂、2# 油为起泡剂，经 1 粗 2 精 2 扫浮锌，获得了铅精矿含铅 49.06%、含银 2 842 g/t，铅回收率 95.12%、银回收率89.67%，以及锌精矿含锌47.16%、锌回收率88.61％的浮选技术指标。伴生元素银以较高的回收率富集于铅精矿中，实现了资源的综合回收。
The lead grade of a silver-rich Pb-Zn ore in Tibet is 2.62%, the zinc grade is 4.46%, and
the associated silver grade is 161 g/t. In order to develop and utilize the ore, the preferential flotation test of
lead, and zinc flotation onlead tailings was carried out. The results show that under the conditions of grinding
fineness of - 0.074 mm accounting for 80%, lime is used as regulator, sodium sulfite and zinc sulfate are
used as inhibitors, diethyl dithiocarbamate and butyl xanthate are used as collectors, and A5 is used as col⁃
lector-foamer agent, by one roughing, two cleanings, two scavengings of lead flotation, lead concentrate with
lead grade of 49.06%, silver content of 2 842 g/t, lead recovery rate of 95.12% and silver recovery rate of
89.67% was obtained. Zinc concentrate with zinc content of 47.16% and zinc recovery of 88.61% was ob⁃
tained by one roughing, two cleanings, two scavengings of zinc flotation using lime as regulator, copper sul⁃
fate as activator, butyl xanthate as collector and 2# oil as foaming agent.The associated element silver is en⁃
riched in lead concentrate with high recovery rate, which realizes the comprehensive recovery of resources.
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