Hardening behaviour of multimetallic magnetite ore (MMO) bonded with three different organic binders: corn starch, carboxymethyl cellulose (CMC), dextrin and one inorganic binder: colemanite, has been investigated. The study aimed to optimize the hardening parameter of MMO with a suitable binder. Four separate green mixtures with doses (0.5, 1, 1.5, 2) wt% were made for each binder. The pellets were fired at four different temperatures (1273 K, 1373 K, 1473 K, 1523 K) for 2 h, and porosity was measured. HR-XRD and SEM techniques were used to analyse the hardened pellets. Pellets bonded with organic binders showed sufficient green strength and dry strength, but failed at higher temperature except for CMC bonded pellets which gave better cold crushing strength (140 kg/pellet) compared to dextrin (21.6 kg/pellet) or corn starch (24.3 kg/pellet) bonded ones. Pellets bonded with 1.5 wt% colemanite gave optimum properties of cold crushing strength (294 kg/pellet) and porosity (25 volume%).

研究了与三种不同有机粘合剂：玉米淀粉、羧甲基纤维素 (CMC)、糊精和一种无机粘合剂：硬硼酸钙石结合的多金属磁铁矿 (MMO) 的硬化行为。该研究旨在使用合适的粘合剂优化 MMO 的硬化参数。每种粘合剂制备了四种单独的绿色混合物，其剂量为 (0.5, 1, 1.5, 2) wt%。将球团在四种不同的温度（1273 K、1373 K、1473 K、1523 K）下烧制 2 小时，并测量孔隙率。HR-XRD 和 SEM 技术用于分析硬化的球团。用有机粘合剂粘合的颗粒表现出足够的生坯强度和干强度，但在更高的温度下失效，除了 CMC 粘合颗粒与糊精（21.6 kg/颗粒）或玉米淀粉（24.6 kg/颗粒）相比具有更好的冷压强度（140 kg/颗粒）。3 公斤/粒）粘合的。与 1.5 wt% 硬硼酸钙石结合的球团具有最佳的冷抗压强度 (294 kg/球团) 和孔隙率 (25 体积%)。