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金属矿山 ›› 2023, Vol. 52 ›› Issue (05): 254-259.

• 矿物工程 • 上一篇    下一篇

新疆某低品位铜钼矿石浮选回收试验

李少平1,2 李白英3 王锦柯1,2 吝子岩4 常治国1,4 张伟光1,2
  

  1. 1. 新疆煤炭资源绿色开采教育部重点实验室,新疆 乌鲁木齐 830000;2. 新疆工程学院矿业工程与地质学院,新疆 乌鲁木齐 830000;3. 迪马新材料科技(苏州)有限公司,江苏 苏州 215100;4. 新疆工程学院安全科学与工程学院,新疆 乌鲁木齐 830000
  • 出版日期:2023-05-15 发布日期:2023-06-15
  • 基金资助:
    自治区创新环境(人才、基地)建设专项—自然科学基金面上项目(编号:2021D01B34,2022D01A52);新疆青年博士科技人才培养项目(编号:2020Q080)。

Recovery Test of a Low-grade Copper-molybdenum Ore in Xinjiang by Flotation

LI Shaoping1,2 LI Baiying3 WANG Jinke1,2 LIN Ziyan4 CHANG Zhiguo1,4 ZHANG Weiguang1,2 #br#   

  1. 1. Key Laboratory of Coal Resources and Green Mining in Xinjiang,Ministry of Education,Urumqi 830000,China;2. College of Mining Engineering and Geology,Xinjiang Institute of Technology,Urumqi 830000,China;3. Dima New Material Technology (Suzhou) Co. ,Ltd. ,Suzhou 215100,China;4. College of Safety Science and Engineering,Xinjiang Institute of Technology,Urumqi 830000,China
  • Online:2023-05-15 Published:2023-06-15

摘要: 新疆某低品位铜钼矿石中 Cu、Mo 品位分别为 0. 81%、0. 02%,主要可回收矿物为黄铜矿和辉钼矿,脉石 矿物主要为黄铁矿、长石、石英、透辉石、透闪石和方解石等。 为有效回收矿石中的铜和钼,针对矿石性质,采用混合浮 选工艺开展选矿试验研究。 通过单因素试验确定适宜的粗选条件为磨矿细度-0. 074 mm 占 60%,石灰用量 500 g / t, 六偏磷酸钠用量 30 g / t,组合捕收剂总用量 60 g / t(丁基黄药与 Z-200 质量比 1 ∶1),2#油用量 15 g / t。 在此基础上,采 用“1 次混浮粗选,3 次空白精选,3 次扫选”的闭路浮选工艺流程处理矿石,最终可获得 Cu 品位 25. 16%、Cu 回收率 94. 02%、Mo 品位 0. 59%、Mo 回收率 90. 21%的铜钼混浮精矿,较好地实现了低品位铜钼矿石中有价金属的综合回收。

关键词: 铜钼矿石, 低品位, 混合浮选, 综合回收

Abstract: The grade of Cu and Mo in a low-grade copper-molybdenum ore in Xinjiang is 0. 81% and 0. 02%,respectively. The main recoverable minerals are chalcopyrite and molybdenite, and the gangue minerals are mainly pyrite, feldspar, quartz,diopside,tremolite and calcite. In order to recover copper and molybdenum from ore effectively,mixed flotation process was used to carry out beneficiation test aiming at ores propertites. The optimum roughing conditions were determined by single factor test as grinding fineness of -0. 074 mm accounting for 60%,lime dosage of 500 g / t,sodium hexametaphosphate dosage of 30 g / t,combined collector total dosage of 60 g / t ( mass ratio of butyl xanthate to Z-200 of 1 ∶1),and 2# oil dosage of 15 g / t. On this basis,the closed-circuit flotation process of " one mixed roughing flotation,three blank cleaning flotation and three scavenging flotation" was adopted to treat the ore. Finally,the copper and molybdenum mixed flotation concentrate with Cu grade of 25. 16%,Cu recovery rate of 94. 02%,Mo grade of 0. 59% and Mo recovery rate of 90. 21% could be obtained. The comprehensive recovery of valuable metals from low grade copper molybdenum ore is realized.

Key words: copper-molybdenum ore,low grade,bulk floation,comprehensive recovery