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首页> 外文会议>Symposium on Characterization of Minerals, Metals, and Materials >Upgrading of Copper and Cobalt from the Democratic Republic of Congo Tailings
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Upgrading of Copper and Cobalt from the Democratic Republic of Congo Tailings

机译：刚果民主共和国铜和钴升级

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Our study focuses on upgrading of copper and cobalt from the Democratic Republic of Congo tailings, containing 2 wt% Cu and 0.5 wt% Co. Cobalt is in the complex iron silicate matrix such that its recovery by direct leaching is not possible. Two concentrating methods were employed in order to obtain copper and cobalt concentrates. Copper was concentrated via flotation and, at the optimal conditions its grade in the concentrate was 31.9 wt%. Cobalt was concentrated to 8.6 wt% by carbothermically reducing the flotation tailings with coal in a temperature range of 800-1050°C and followed by magnetic separation. The reaction products were analysed by atomic absorption spectrometer (AAS) and scanning electron microscopy (SEM) techniques. The best carbothermic reduction temperature was found to be 950°C due to maximum metallisation and less sintering between gangue and metallic/alloy phases.
机译：我们的研究侧重于刚果尾矿民主共和国的铜和钴升级，含有2wt％Cu和0.5wt％Co.钴位于复杂的铁硅酸铁基质中，使其通过直接浸出的恢复是不可能的。采用两种浓缩方法以获得铜和钴浓缩物。铜通过浮选浓缩，并且在最佳条件下，其浓缩物的等级为31.9wt％。通过在800-1050℃的温度范围内用煤炭减少浮选尾矿并随后磁性分离而浓缩至8.6wt％。通过原子吸收光谱仪（AAS）和扫描电子显微镜（SEM）技术分析反应产物。由于最大的金属化和煤矸石和金属/合金相之间的烧结，最佳的碳热还原温度是950℃。

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