| 云南东川某高锌难选铜锌硫化矿石选矿试验研究 |
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| 引用本文： | 董继发,方建军,何海洋,邱芝莲,寇青军.云南东川某高锌难选铜锌硫化矿石选矿试验研究[J].矿产保护与利用,2021,41(5):97-104. |
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| 作者姓名： | 董继发 方建军 何海洋 邱芝莲 寇青军 |
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| 作者单位： | 1.昆明理工大学 国土资源工程学院, 云南 昆明 650093 |
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| 摘 要： | 云南东川某铜锌硫化矿石Cu品位为0.64%、Zn品位为6.21%，主要脉石矿物有石英、绢云母、方解石等，且矿石中的矿物多数都构成连生体，给铜锌分离造成困难。对该矿石采用抑锌浮铜的优先浮选工艺流程。在磨矿细度为-0.074 mm占80%条件下，用石灰调节pH，铜粗选用硫酸锌和焦亚硫酸钠组合抑制闪锌矿，Z-200为捕收剂；锌粗选以硫酸铜为活化剂，异丁基黄药为捕收剂；铜和锌均采用“一次粗选一次扫选两次精选”的工艺流程，其中，铜粗精矿需再磨至细度为-0.038 mm占90%，铜第一次精选尾矿需进行扫选。最终，经闭路流程试验获得Cu品位27.87%、Cu回收率75.17%的铜精矿和Zn品位49.23%、Zn回收率94.48%的锌精矿，铜精矿含锌5.41%，锌精矿含铜1.03%，铜锌互含较低，实现了铜锌分离。
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| 关 键 词： | 硫化矿 铜锌分离 抑锌浮铜 再磨 浮选 |
| 收稿时间： | 2021-10-10 |
Experimental Study on Beneficiation of a High Zinc Refractory Copper -Zinc Sulfide Ore from Dongchuan County of Yunnan Province |
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| DONG Jifa,FANG Jianjun,HE Haiyang,QIU Zhilian,KOU Qingjun.Experimental Study on Beneficiation of a High Zinc Refractory Copper -Zinc Sulfide Ore from Dongchuan County of Yunnan Province[J].Conservation and Utilization of Mineral Resources,2021,41(5):97-104. |
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| Authors: | DONG Jifa FANG Jianjun HE Haiyang QIU Zhilian KOU Qingjun |
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| Affiliation: | 1.Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China2.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming 650093, China |
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| Abstract: | In a copper-zinc sulfide ore in Dongchuan, Yunnan Province, the Cu grade is 0.64% and the Zn grade is 6.21%. The main gangue minerals include quartz, sericite and calcite.Most of the minerals in the ore are composed of intergrowth.The low degree of monomer dissociation is unfavorable, causing difficulty in the separation copper and zinc. The selective flotation process of zinc suppression and copper flotation is adopted for the ore. Under the condition that the grinding fineness is -0.074 mm, accounting for 80%, adjust the pH with lime, select the combination of zinc sulfate and sodium pyrosulfite to inhibit sphalerite for copper roughing, Z-200 as the collector, copper sulfate as the activator for zinc roughing, isobutyl xanthate as the collector, and adopt the process of "one roughing, one scavenging and two cleaning" for copper and zinc. Among them, the copper roughing concentrate needs to be regrinded to a fineness of -0.038 mm, accounting for 90%.The tailings of the first copper cleaning shall be scavenging. Finally, through the closed-circuit process tests, the copper concentrate with Cu grade of 27.87% and Cu recovery of 75.17% and the zinc concentrate with Zn grade of 49.23% and Zn recovery of 94.48% were obtained. The copper concentrate contains 5.41% zinc, the zinc concentrate contains 1.03% copper, and the mutual content of copper and zinc in the concentrate was low, and the separation of copper and zinc was realized. |
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