The unutilized iron ore fines (IOF, − 10 mm, 45% to < 60% Fe(T)) left at various mine sites during blasting and processing are rich in goethetic-hematite associated with high clay and considered a potential iron ore resource. The variation of loss on ignition (LOI) from mines to mines is based on the goethite and clay mineral content. The clay containing below 45 μm is mostly brittle, causing beneficiation problems. The IOF has an LOI of 7.83%, with high silica (5.52%) and alumina (4.57%), and 57.17% of Fe(T) subjected to both conventional deep beneficiation (CDB) and magnetization roasting using high-ash non-coking coal to adopt the suitable upgradation process. The CDB and magnetization roasting concentrate has 62.61% and 67.58% Fe(T) with 64.69% and 85.19% yield, respectively. However, the presence of 6.40% LOI in CDB makes the ore challenging for pelletization. Characterization like X-ray diffraction(XRD), scanning electron microscope(SEM), and chemical analysis was used to assess the concentrate quality and potential industrial application.

在爆破和加工过程中留在各个矿区的未利用铁矿粉（IOF，- 10 毫米，45% 至 < 60% Fe(T)）富含与高粘土相关的软铁赤铁矿，被认为是潜在的铁矿石资源。不同矿山的烧失量 (LOI) 变化取决于针铁矿和粘土矿物的含量。45μm以下的粘土大多是脆性的，造成选矿问题。IOF 的 LOI 为 7.83%，具有高二氧化硅 (5.52%) 和氧化铝 (4.57%)，以及 57.17% 的 Fe(T) 经过常规深度选矿 (CDB) 和使用高灰无焦化的磁化焙烧煤采用适宜的提质工艺。CDB 和磁化焙烧精矿的 Fe(T) 含量分别为 62.61% 和 67.58%，收率分别为 64.69% 和 85.19%。然而，6的存在。CDB 中 40% 的 LOI 使矿石难以造粒。X射线衍射(XRD)、扫描电子显微镜(SEM)和化学分析等表征被用来评估精矿质量和潜在的工业应用。