内蒙古某深部高硫铅锌矿石浮选工艺试验研究

摘要/Abstract

摘要： 内蒙古某铅锌矿随着开采深度的加深，黄铁矿含量升高，含硫接近30%。为此，在对新采出原矿进行工艺矿物学研究的基础上开展了选矿试验，为该选厂合理选矿工艺流程确定提供依据。结果显示：矿石主要有价元素为铅、锌、硫，铅品位为7.56%，锌品位为23.35%，铅、锌均主要以硫化矿形式存在，方铅矿、闪锌矿、黄铁矿嵌布粒度均为粗粒嵌布。在磨矿细度为-0.074 mm占70%条件下，以ZnSO₄为抑制剂、乙基黄药为捕收剂、730A为起泡剂经1粗2扫流程等可浮铅锌硫，等可浮尾矿以CuSO₄为活化剂、丁基黄药为捕收剂、730A为起泡剂经1粗1精1扫选锌，获得锌精矿1，等可浮精矿在再磨细度为-0.043 mm占80%条件下以石灰为抑制剂、乙硫氮为捕收剂经1粗3精1扫选铅，获得铅精矿，选铅尾矿CuSO₄为活化剂、丁基黄药为捕收剂、730A为起泡剂经1粗1精1扫锌硫分离浮选，获得锌精矿2和硫精矿，锌精矿1和锌精矿2合并为锌精矿，最终获得了铅品位为59.26%、回收率为88.73%的铅精矿，锌品位为52.21%、回收率为94.95%的锌精矿，硫品位为48.71%、回收率为48.93%的硫精矿。试验结果可以为该深部矿体高硫铅锌矿石开发利用提供依据。

关键词: 高硫铅锌矿石, 方铅矿, 闪锌矿, 等可浮流程

Abstract: The content of pyrite in a lead-zinc ore from Inner Mongolia increased with the deep of mining, of which the sulfur was close to 30%. There for, on the basis of technological mineralogy study of newly mining raw ore, the processing test was carried out, to provide technical basis for determination of the rational processing flow in the processing plant. The results showed that the major elements of the ore are lead, zinc and sulfur with 7.56% Pb and 23.35% Zn. Lead and zinc are mainly in form of sulfide ores and the main useful minerals such as galena, sphalerite and pyrite are coarse-grained. With the grinding fineness of -0.074 mm 70%, using ZnSO₄ as inhibitor, ethyl xanthate as collector and 730A as frother, iso-flotation of lead-zinc-sulfur by one roughing, two scavenging process. Zinc concentrate 1 was got from iso-flotation tailings using CuSO₄ as activator, butyl xanthate as collector and 730A as frother via one roughing, one cleaning and one scavenging process. Lead concentrate was got from iso-flotation concentrate using CaO as inhibitor, sodium diethyl dithiocarbamate as collector via one roughing three cleaning and one scavenging process. Zinc concentrate 2 and sulfur concentrate were got from lead tailings using CuSO₄ as activator, butyl xanthate as collector and 730A as frother with one roughing, one cleaning and one scavenging process. Zinc concentrate 1 and zinc concentrate 2 were mixed as zinc concentrate. Finally lead concentrate with 59.26% Pb and recovery of 88.73%; zinc concentrate 52.21% Zn and recovery of 94.95%; sulfur concentrate with 48.71% S and recovery of 48.93% was finally obtained. The test results can provide technical basis for exploring and utilization of the high sulfur Pb-Zn ore in the deep ore body.

Key words: High sulfur Pb-Zn ore, Galena, Sphalerite, Iso-flotation process

陈京玉, 康维刚, 谢建平, 牛英杰, 陈志国. 内蒙古某深部高硫铅锌矿石浮选工艺试验研究[J]. 金属矿山, 2018, 47(10): 80-85.

CHEN Jing-Yu, KANG Wei-Gang, XIE Jian-Ping, NIU Ying-Jie, CHEN Zhi-Guo. Study on the Flotation Process of a High Sulfur Pb-Zn Ore in Deep Ore Body from Inner Mongolia[J]. Metal Mine, 2018, 47(10): 80-85.

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内蒙古某深部高硫铅锌矿石浮选工艺试验研究

Study on the Flotation Process of a High Sulfur Pb-Zn Ore in Deep Ore Body from Inner Mongolia

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