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| 云南某含银铜铅混合精矿分离试验研究 |
| Experimental Study on Separation of a Silver-Bearing Cu-Pb Mixed Concentrate in Yunnan |
| Received:November 26, 2018 |
| DOI： |
| 中文关键词: 多金属硫化矿 铜铅分离 抑铅浮铜 抑制剂 浮选 |
| 英文关键词: polymetallic sulfide ore copper-lead separation lead-free copper float inhibitor flotation |
| 基金项目:国家自然科学基金地区科学基金项目(编号:51764021)。 |
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| 中文摘要: |
| 云南某铜铅混合精矿含Cu 8.14%、Pb 38.57%、Ag 251.62 g/t，对其进行浮选试验研究铜铅的分离。通过条件试验，确定在磨矿细度为-200目含量为93.85%的情况下，抑制剂CMC+亚硫酸钠用量选择1000 g/t，捕收剂Z-200用量选择10 g/t。采用“抑铅浮铜”一粗三精一扫的闭路试验流程，获得铜品位24.73%、回收率87.24%、含铅品位6.23%的铜精矿；铅品位62.71%、回收率84.48%，含铜0.86%的铅精矿。银在铜铅精矿中进一步富集的总回收率为73.04%，实现了该铜铅混合精矿的分离及银的进一步富集。 |
| 英文摘要: |
| A mixture of copper and lead in Yunnan contains 8.14% of Cu, 38.57% of Pb and 251.62 g/t of Ag. Flotation experiments were carried out to study the separation of copper and lead. Through the condition test, it was determined that for the concentrate at a grinding fineness of -200 mesh and a content of 93.85%, the ideal dosage of CMC + sodium sulfite as the inhibitor and Z-200 as the collector was 1000 and 10 g/t, respectively. By using the closed circuit test flow of "suppressing lead floating copper", a copper concentrate and a lead concentrate were separated out from the silver-bearing Cu-Pb mixed concentrate. The copper concentrate had a copper grade of 24.73% with a recovery of 87.24% and lead content had been reduced to 6.23%. The lead concentrate contained 62.71% Pb and 0.86% Cu with a lead recovery of 84.48%. A total recovery of silver could be up to 73.04% after a further enrichment process. These results indicate that the separation of the copper-lead mixed concentrate and the further enrichment of silver has been realized in the present study. |
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