Derivation of Optimal Operating Combination for High Sintering Productivity

Abstract

In this study, we have proposed an optimal operating combination for the purpose of increasing sintering productivity in various mixed amounts of fine ore. Three operating parameters, including the quicklime ratio, bed height and bulk density, were selected and all experiments were conducted in a pilot-scale sinter pot to simulate various conditions of sintering in a real-scale sinter plant. This study showed that the optimal quicklime amount was 2% when the mixing amount of fine ore was 0% and 7.5%, and 2.5% was the optimal quicklime amount when the mixing amount of fine ore was 15% and 22.5%. Productivity decreased with increased bed height and bulk density regardless of the mixing amount of fine ore. Strength increased with increased bed height and decreased bulk density. It should be noted that the results obtained from the present study were based on pilot scale experiments, and confirmation tests in a real scale plant are still necessary in the future.