The volume of tailings produced by the extractive industry has been increasing due to the processing of the low‐grade ore. This issue can cause environmental accidents and require significant investment to control the disposal of tailings. Therefore, this study aims to recover iron from zinc mine tailings by wet magnetic separation followed by the carbothermal reduction of self‐reducing briquettes. Two magnetic separation routes were investigated to concentrate iron. Zinc mine tailings were processed by route I, in a rougher stage followed by a scavenger stage; and route II, in a rougher stage followed by a cleaner stage. The carbothermal reductions were performed using self‐reducing briquettes composed of Fe concentrate from the route with high Fe content and charcoal. The products were analyzed by scanning electron microscopy with energy dispersive spectroscopy (SEM‐EDS), x‐ray diffraction (XRD), inductively coupled plasma optical emission spectrometry (ICP‐OES), and volumetric chemical analysis. Magnetic separation route II provided the highest‐grade Fe concentrate, 52% Fe, while route I provided 33% Fe. In the carbothermal reductions, a metallization degree of 98% in the Fe concentrate briquette, 97% in the briquette with a 10% replacement of its raw material by Fe concentrate, and 99% in the hematite briquette was reached. The replacement of raw material by Fe concentrate showed no significant change in Fe recovery. Considering the whole process, magnetic separation and carbothermal reduction, the recovery of Fe from the zinc mine tailings was 67%. Therefore, the process route suggested in this study will not only reduce tailings disposal and consequently the risk of environmental accidents, but it will also provide profitable raw material for the steel industry.

中文翻译：

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通过磁选从锌矿尾矿中回收铁，然后碳热还原自还原团块

由于加工低品位矿石，采矿业生产的尾矿量一直在增加。此问题可能导致环境事故，并且需要大量投资来控制尾矿的处置。因此，本研究旨在通过湿磁选从碳矿还原自还原型煤中回收锌矿尾矿中的铁。研究了两种磁选路线以浓缩铁。锌矿尾矿通过路线I进行处理，在更粗糙的阶段接着是清除阶段。和路线II，先是更粗略的阶段，接着是更清洁的阶段。碳热还原是使用自还原团块进行的，该团块由高铁含量和木炭的铁精矿组成。通过扫描电子显微镜，能量色散光谱（SEM-EDS），x射线衍射（XRD），电感耦合等离子体发射光谱（ICP-OES）和体积化学分析对产品进行分析。磁选路线II提供了最高品位的铁精矿，含铁52％，而路线I提供了33％的铁。在碳热还原中，铁精矿型煤的金属化度为98％，用铁精矿替代其原料的10％的煤球的金属化度为97％，赤铁矿型煤的金属化度为99％。用铁精矿替代原料表明铁回收率无明显变化。考虑到整个过程，磁选和碳热还原，从锌矿尾矿中回收的铁为67％。因此，