新疆某低品位难选铜镍矿石选矿试验

发布时间：2018-03-24 19:22

本文选题：难选铜镍矿石　切入点：铜镍混合浮选　出处：《金属矿山》2017年02期

【摘要】：新疆某低品位难选铜镍矿石铜、镍品位分别为0.23%和0.69%,现场采用预选脱除滑石—铜镍混合浮选再分离铜流程获得铜精矿和铜镍混合精矿,铜镍回收率较低。为给现场工艺流程改造提供依据,进行了选矿试验研究。结果表明:在磨矿细度为-0.074 mm占80%条件下,以六偏磷酸钠+CMC为抑制剂、硫酸铜为活化剂、Z-200+J622为捕收剂,经1粗2精1扫铜镍混合浮选,铜镍混合精矿经3次铜精选,获得了含铜18.08%、铜回收率52.17%的铜精矿和含铜2.81%、含镍16.25%、铜回收率41.73%、镍回收率81.78%的铜镍混合精矿。与现场生产指标相比,铜、镍回收率分别提高了9.67和3.45个百分点,浮选指标明显得到改善。
[Abstract]:In a low grade refractory copper and nickel ore in Xinjiang, the nickel grade is 0.23% and 0.69% respectively. Copper concentrate and copper-nickel mixed concentrate are obtained by pre-separation of talcum and copper-nickel mixed flotation process. The recovery rate of copper and nickel is relatively low. In order to provide the basis for the revamping of the field technological process, the ore dressing test is carried out. The results show that when the grinding fineness is -0.074 mm / 80%, sodium hexametaphosphate (CMC) is used as the inhibitor. Copper sulfate was used as activator, Z-200 J622 was used as collector, mixed flotation of copper and nickel was carried out by 1 thick, 2 concentrate and 1 sweep copper and nickel, and copper and nickel mixed concentrate was cleaned by copper for 3 times. Copper concentrate containing copper 18.08, copper recovery rate 52.17% and copper containing 2.81%, nickel 16.25%, copper recovery 41.73%, nickel recovery 81.78%, copper and nickel recovery increased 9.67 and 3.45 percentage points, respectively, compared with field production index, copper concentrate and copper concentrate with copper recovery rate of 52.17% and copper content of 2.81%, nickel recovery rate of 41.73% and 81.78% of nickel recovery rate were increased by 9.67 and 3.45 percentage points, respectively. The flotation index is obviously improved.
【作者单位】：华北理工大学矿业工程学院;青海西部矿业科技有限公司;青海省高原矿物加工工程与综合利用重点实验室;江西理工大学资源与环境工程学院;
【基金】：青海省企业研究转化与产业化专项(编号:2016-GX-C9) 青海省重点实验室发展专项(编号:2014-Z-Y10,2014-Z-Y27)
【分类号】：TD952

【参考文献】