Abstract
Sintering is the most extensively used and economic agglomeration process to prepare iron ore fines for blast furnace use. Granulation is the most critical factor controlling iron ore sintering process, as it improves sinter mix permeability. Currently, sinter plants are receiving significant proportion (up to 40%) of − 150 μm micro-fines in iron ore fines, which makes sintering difficult. The presence of moisture increases the specific volume of air required for sintering and it benefits the heat transfer during sintering. The present study was done in laboratory to understand the effect of water addition in two stages during granulation on sintering process. Pot sintering experiments were carried out to study the variation in process parameters for split water addition and normal method. For all experimental data, statistical analysis was done. There is no difference in value of process parameters with respect to normal method and split water method except in peak exhaust gas temperature; it was found more in case of split water addition which means a condition conducive for increased speed of sinter machine. Sinter produced with higher micro-fines by split water method is more homogenous as compared to normal method.
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