刚果(金)某高氧化率铜钴矿选冶工艺对比实验

    Comparative Test on Beneficiation and Metallurgical Processes for the High-oxidation Copper-cobalt Ore in the Democratic Republic of Congo

    • 摘要: 【目的】为了高效、经济地回收刚果(金)某高氧化率铜钴矿中的铜、钴元素,【方法】在矿石工艺矿物学研究的基础上,针对该矿浮选硫化剂用量大、直接浸出酸耗高的问题,进行了选冶联合工艺对比实验研究。【结果】硫氧浮磁联合工艺综合回收率Cu为72.93%,Co为68.79%,脱硫尾矿直接浸出工艺综合回收率Cu为78.95%,Co为70.18%。脱硫尾矿直接浸出工艺比硫氧浮磁联合工艺Cu回收率高6.02个百分点,Co回收率高1.40个百分点。【结论】初步计算硫氧浮磁联合工艺吨矿毛利润比脱硫尾矿直接浸出工艺高29.42,揭示对该矿的开发需选择合适的工艺流程,综合多种因素,才能获得较好的经济和环境效益。

       

      Abstract: Objective To efficiently and economically recover copper and cobalt from a high-oxidation copper-cobalt ore in the Democratic Republic of the Congo, a beneficiation-metallurgy combined process was investigated based on the process mineralogy of the ore. Method The study aimed to address the issues of high flotation sulfurizing agent consumption and excessive acid consumption in direct leaching. Comparative tests were conducted. Result The comprehensive recovery rates of Cu and Co using the flotation-sulfurization-magnetic separation combined process were 72.93% and 68.79%, respectively. In contrast, the direct leaching of desulfurized tailings achieved Cu and Co recovery rates of 78.95% and 70.18%, respectively. The direct leaching process improved Cu recovery by 6.02 percentage points and Co recovery by 1.40 percentage points compared to the flotation- sulfurization-magnetic separation process. Conclusion Preliminary calculations indicated that the gross profit per ton of the ore for the flotation- sulfurization-magnetic separation process was 29.42 higher than that of the direct leaching process. These findings highlight the importance of selecting an appropriate process flow by considering multiple factors to achieve better economic and environmental benefits for ore development.

       

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