To comprehensively reuse copper ore tailings, the recovery of γ-Fe 2 O 3 from magnetic roasted slag after sulfur release from copper ore tailings followed by magnetic separation is performed. In this work, after analysis of chemical composition and mineralogical phase composition, the effects of parameters in both magnetization roasting and magnetic separation process with respect to roasting temperature, residence time, airflow, particle size distribution, magnetic field intensity, and the ratio of sodium dodecyl sulfonate to roasted slag were investigated. Under optimum parameters, a great number of γ-Fe 2 O 3 is recycled with a grade of 66.86% and a yield rate of 67.21%. Meanwhile, the microstructure, phase transformation and magnetic property of copper ore tailings, roasted slag, and magnetic concentrate are carried out.

中文翻译：

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磁化焙烧和磁选从铜矿石尾矿中回收γ-Fe2O3

为了综合利用铜尾矿，先进行硫磺从铜尾矿中释放出来，然后进行磁选，然后从磁性焙烧炉渣中回收γ-Fe2 O 3。在这项工作中，在分析了化学成分和矿物相组成之后，磁化焙烧和磁选过程中的参数对焙烧温度，停留时间，气流，粒度分布，磁场强度和钠比的影响研究了十二烷基磺酸盐对焙烧炉渣的影响。在最佳参数下，可回收大量γ-Fe2 O 3，品位为66.86％，产率为67.21％。同时，对铜矿尾矿，焙烧渣和磁精矿进行了显微组织，相变和磁性能测试。