某含铜黄铁矿石选矿工艺优化设计与生产实践

Optimization Design and Production Practice of Beneficiation Process for a Copper-containing Pyrite Ore

某大型含铜黄铁矿资源由于矿石性质复杂,有价成分多样,分选难度大,一期选矿厂不仅铜精矿、硫精矿品位和回收率偏低,而且铜硫互含和有价成分流失严重。为建设更高效、更科学的二期选矿工艺系统,采用先浮易浮铜、然后铜硫混浮、混浮精矿再磨再分离、混浮尾矿脱泥后再选硫流程处理矿石,最终获得铜品位22.02%、回收率83.17%的铜精矿,硫品位46.50%、回收率76.09%的高硫精矿,铜精矿品位提高了2.74个百分点、回收率提高了5.31个百分点,硫精矿品位提高了5.12个百分点、回收率提高了10.22个百分点,显著提高了企业的经济效益,减少了尾矿中硫对环境的不利影响。因此,在选矿流程的制定上,更精细、更科学、更准确地把握矿物性质的差异,有利于制定更高效的选矿流程。

Due to the complex nature of the ore and the diversity of valuable components,it was difficult to achieve effectively separation for a large copper-containing pyrite resource.The grade and recovery rate of copper and sulfur concentrates in the Phase I concentrator was not only low,but also the copper and sulfur mutual content and the loss of valuable components were serious.In order to build a more efficient and scientific phaseⅡbeneficiation process system,the process of first floating easily floatable copper,then mixed flotation of copper and sulfur,grinding and separation of mixed flotation concentrate,desliming of mixed flotation tailings,and then sulfur separation was adopted to treat the ore.Finally,a copper concentrate with a copper grade of 22.02% and a recovery rate of 83.17% was obtained,and a high sulfur concentrate with a sulfur grade of 46.50% and a recovery rate of 76.09% was obtained.The copper concentrate grade increased by 2.74 percentage points,and the recovery rate increased by 5.31 percentage points.The grade of sulfur concentrate increased by 5.12 percentage points and the recovery rate increased by 10.22 percentage points,significantly improving the economic benefits of the enterprise and reducing the adverse impact of sulfur in tailings on the environment.Therefore,in the formulation of mineral processing processes,a more precise,scientific,and accurate understanding of the differences in mineral properties is conducive to the formulation of more efficient mineral processing processes.