铁矿粉基础性能对烧结性能影响的研究

Investigation into the Effect of Fundamental Characteristics of Iron Ore Fines on Their Sintering Performance

摘要: 铁矿粉基础性能对其制粒、烧结及烧结矿质量具有重要影响，研究两者间的关系，对优化配矿，从而提高烧结矿产量、改善烧结矿质量具有重要意义。本文对铁矿粉新品种进行了基础性能与其烧结性能关系的研究。烧结矿转鼓强度与四项高温反应性能指标之间不存在明显的相关性；烧结矿产量与粘结相自身强度及液相流动性存在一定的正相关性。烧结矿还原性高，低温还原粉化率高，两者呈现正相关。烧结矿的还原性及低温还原粉化率与四项高温性能之间也不存在明显的相关性。

Abstract: The fundamental characteristics of iron ore fines largely affect their granulation behavior, sintering performance and even the quality of final sinter product. Therefore, it is of significant importance to investigate the internal relationship between fundamental characteristics and sintering performance for optimizing ore blends, increasing the sinter output and improving the quality of sinter product. In this paper, the relevance of fundamental characteristics of a series of new iron ore fines to their sintering performance was studied. The results show no obviously good correlation can be found between the conventional four high temperature sintering characteristics (i.e., assimilation characteristic, self-bonding strength characteristic, fluidity and formation characteristic of SFCA) of iron ore fines and tumble index (TI) of their single ore sinter, but there is to some extent positive correlation between the productivity of sinter and the self strength of bond-ing phases and fluidity properties of iron ore fines. Besides, positive relationship can also be ob-served between the reduction index (RI) and reduction degradation index (RDI) of sinter. However, both of which also show poor correspondence to the four high temperature sintering characteristics.