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Use of Carbon-based Nanomaterials on the Cold Agglomeration of Iron Ore Fines

机译：碳基纳米材料在铁矿粉冷团聚中的应用

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摘要

Cold agglomerated iron ore mini-pellets (diameter 3–8 mm) with high mechanical strength were prepared. The use of carbon-based nanomaterials (carbon nanotubes and graphite nanoplatelets) as additives to the binder (liquid sodium silicate) promoted the increase of the mechanical strength of the agglomerate to about 285%. The dispersion of the nanomaterials into the binder combined with the resting time of the dispersed material were considered key points on the formation of agglomerates with high mechanical strength. The results have shown that the solely use of ultrasonic processor is inefficient to disperse the nanomaterials into the binder. However, using a resting period of approximately fifteen days, the dispersion of the nanomaterials has improved considerably. Subsequently, the increase in the mechanical strength of the agglomerate (mini-pellet) was related to the dispersion capacity of the nanomaterials in the sodium silicate.
机译：制备了具有高机械强度的冷团聚铁矿微型球（直径3–8 mm）。使用碳基纳米材料（碳纳米管和石墨纳米片）作为粘合剂（液态硅酸钠）的添加剂可将团聚体的机械强度提高到约285％。纳米材料在粘合剂中的分散以及分散材料的静置时间被认为是形成具有高机械强度的团聚物的关键点。结果表明，仅使用超声处理器不足以将纳米材料分散到粘合剂中。然而，使用约十五天的静置时间，纳米材料的分散性已显着改善。随后，附聚物（微丸）的机械强度的增加与纳米材料在硅酸钠中的分散能力有关。

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