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Recovery of iron from cyanide tailings with reduction roasting-water leaching- magnetic separation

机译:从氰化物尾矿恢复铁,减少焙烧 - 水浸出 - 磁性分离

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Cyanide tailings have become one kind of the most hazardous solid waste. In order to recycle iron in the cyanide tailings, we present a technique using roasting- water leaching- magnetic separation. After analysis of the different parameters on recovery efficiency of iron, the optimum reaction parameters were proposed as the following: in reduction roasting process, weight ratios of cyanide tailings/activated carbon at 100:10, roasting at 750°C; the liquid to solid ratio is 15:1 (ml/g), leaching at 60°C for 5 min at water leaching. The grade of magnetic concentrate 53.8231%Fe and recovery rate of 76.5458% were obtained. Mineralography of roasted product, water-leached sample were studied by X-ray powder diffraction technique (XRD).
机译:氰化物尾矿已成为一种最危险的固体废物。为了在氰化物尾矿中循环铁,我们使用焙烧 - 水浸出磁性分离的技术。在分析钢铁恢复效率的不同参数之后,提出了最佳反应参数如下:在减少烘焙过程中,氰化物尾矿/活性炭的重量比在100:10,在750℃下焙烧;液体至固体比为15:1(mL / g),在水浸出时在60℃下浸出5分钟。获得磁性浓缩物的等级53.8231%Fe和回收率为76.5458%。通过X射线粉末衍射技术(XRD)研究了焙烧产品的矿物浸出样品。

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