Experimental Research on Synchronous Flotation of Copper and Silver in a Silver-bearing Copper Oxide Ore with High Carbonate Gangue from Yunnan
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摘要:
对云南某高碳酸盐型含银氧化铜矿进行铜银同步浮选实验研究。结果表明，通过闭路实验，可获得铜银精矿Cu品位22.03%，Cu回收率71.69%， Ag品位1095 g/t，Ag回收率81.90%的技术指标。采用此同步浮选工艺可有效选别该含银氧化铜矿。
Abstract:A synchronous flotation test of copper and silver in a silver-bearing copper oxide ore with high carbonate gangue from Yunnan was studied. The results show that copper and silver concentrate copper grade of 22.03% and recovery of 71.69% was achieved through the closed circuit flotation test. And the grade and recovery of silver in copper concentrate were relatively 1095 g/t and 81.90%. The synchronous flotation technology using in the silver-bearing copper oxide ore is effectual .
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Key words:
- Copper oxide ore /
- Copper /
- Silver /
- Synchronous flotation
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表 1 原矿化学多元素分析结果/%
Table 1. Multi-element analysis results of the run-of- mine ore
Cu Ag* Au* As S TFe 烧失量 SiO2 Al2O3 CaO MgO K2O Na2O 1.38 60.16 0.06 0.075 0.06 1.05 36.90 12.30 2.53 25.90 18.51 0.45 0.26 *单位为 g/t。 
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表 2 原矿铜物相分析结果
Table 2. Copper phase analysis results of the raw ore
名称 原生硫化铜 次生硫化铜 自由氧化铜 结合氧化铜 总铜 含量/% 0.05 0.009 1.27 0.05 1.38 分配率/% 3.63 0.65 92.10 3.63 100.00
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表 3 闭路流程实验结果
Table 3. Results of the close-circuit test
产品名称 产率/% 品位/% 回收率/% Cu Ag* Cu Ag 铜银精矿 4.50 22.03 1095 71.69 81.90 尾矿 95.50 0.41 11.40 28.31 18.10 原矿 100.00 1.38 60.16 100.00 100.00 *单位为 g/t。
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