多金属原生硫化矿铜锌分离试验研究

发布时间：2018-11-13 21:00

【摘要】：某铜锌多金属硫化矿含铜0.63%、含锌0.41%,矿石氧化率较低,属易浮铜锌多金属原生硫化矿。针对现场生产铜锌精矿互含较高、铜锌分离不理想的问题,试验研究确定了优先浮铜—铜尾浮锌的优先浮选方案,控制磨矿细度-74μm粒级占80%,通过原矿"一次粗选、三次精选、一次扫选"浮铜+铜尾矿"一次粗选、三次精选、二次扫选"浮锌的工艺流程,利用组合抑制剂碳酸钠+水玻璃加强对脉石矿物抑制,组合抑制剂亚硫酸钠+硫酸锌加强对含锌矿物抑制,最终获得了铜精矿铜品位22.30%、锌品位1.37%,铜回收率89.91%;锌精矿锌品位18.71%、铜品位0.96%,锌回收率78.49%的良好指标,对比现场生产指标有了极大改善,铜锌综合回收利用效果显著。
[Abstract]:A copper-zinc polymetallic sulphide ore contains 0.63% copper and 0.41% zinc. The oxidizing rate of the ore is low and it belongs to the primary copper zinc polymetallic sulfide ore which is easy to float. In view of the problem of high mutual content of copper and zinc concentrate in field production and unsatisfactory separation of copper and zinc, the priority flotation scheme of priority floating copper and copper tail floating zinc was determined. The grinding fineness-74 渭 m particle size was controlled to account for 80%, and through the primary rough separation of the raw ore, the floatation scheme of priority floating copper and copper tail floating zinc was determined. The technological process of "floating copper tailings", "floating copper tailings" and "floatation zinc" by three times cleaning, one time cleaning, and two times cleaning "floating zinc", the combined inhibitor sodium carbonate sodium silicate was used to strengthen the inhibition of gangue minerals. The combined inhibitor, sodium sulfite zinc sulfate, strengthened the inhibition of zinc bearing minerals, and finally obtained the copper grade of copper concentrate 22.30%, zinc grade 1.37% and copper recovery rate 89.91%. The good indexes of zinc grade 18.71%, copper grade 0.96 and zinc recovery rate 78.49% of zinc concentrate have been greatly improved compared with the field production index, and the comprehensive recovery and utilization effect of copper and zinc has been remarkable.
【作者单位】：天津华北地质勘查局;华北有色工程勘察院有限公司;
【分类号】：TD952

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