Abstract As a potential solid waste resource, low-grade ferromanganese ore has not been fully utilized or recycled. In this study, fluidization magnetization roasting and magnetic separation technology were used to recycle low-grade ferromanganese ore. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), sample vibrating magnetometer (VSM), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM) were used to systematically detect the process mechanism. The results show under the optimized conditions, high-quality products of iron concentrate with iron grade of 69.05% at iron recovery of 95.94%, and a manganese concentrate with manganese grade of 53.30% at manganese recovery of 90.41% were obtained. The fluidization magnetization roasting technology can make the weak magnetic hematite in raw ore transform to the strong magnetic magnetite, while it makes the pyrolusite and braunite transform to manganosite. The newly formed mineral lattice had clear stripes and remarkable magnetization properties. After magnetic separation, magnetite and manganosite were individually separated at individual concentrates, which efficiently transforms and utilises this low-grade ferromanganese ore without any residue using this process.

中文翻译：

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流化磁化焙烧磁选技术分离低品位锰铁矿锰铁

摘要 作为一种潜在的固体废弃物资源，低品位锰铁矿尚未得到充分利用和回收。本研究采用流化磁化焙烧和磁选技术回收低品位锰铁矿。采用X射线衍射（XRD）、扫描电子显微镜（SEM）、能谱（EDS）、样品振动磁强计（VSM）、X射线光电子能谱（XPS）、透射电子显微镜（TEM）系统检测过程机制。结果表明，在优化条件下，获得了铁品位69.05%、铁回收率95.94%、锰品位53.30%、锰回收率90.41%的优质铁精矿产品。流化磁化焙烧技术可以使原矿中弱磁性的赤铁矿转变为强磁性磁铁矿，同时使软锰矿和布劳恩矿转变为锰铁矿。新形成的矿物晶格具有清晰的条纹和显着的磁化特性。磁选后，磁铁矿和锰矿在单独的精矿中单独分离，有效地转化和利用这种低品位的锰铁矿石，没有任何残留物。