Assimilation reaction characteristic number for evaluating the assimilation of iron ore in sintering

Abstract

The assimilation properties of iron ores are important during sintering. The amount of formed calcium ferrite was firstly used to evaluate the assimilation. Then, temperature and time of assimilation were proposed rather than the former one, which simplify the process and improve the operability of experiments. However, the factors affecting the temperature were always neglected and using several indexes to evaluate the assimilation was inconvenient. In this paper, the assimilation reaction characteristic number taking the actual sintering temperature as the reference temperature was put forward to evaluate the assimilation of iron ores. This assimilation reaction characteristic number was a dimensionless number including kinds of important information during the assimilation reaction process. Results showed that the assimilation characteristic number can reflect the overall process of assimilation reaction between ores and CaO, which could help further analyze the assimilation difference of ores.