Influence of Variable-Diameter Structure on Gas–Solid Heat Transfer in Vertical Shaft Cooler

In order to improve the heat transfer between high-temperature sinter and cooling gas in a vertical shaft cooler, new furnace type with variable-diameter structure was proposed, influence of on gas–solid vertical-shaft cooler studied by CFD-DEM coupling method current work. The results show that can increase quantity low-temperature as well outlet temperature, uniformity temperature along width, at cost significantly increasing pressure. By changing parameters structure, it found smaller width section or larger angle contraction led better sinter–gas transfer. pressure more obvious. It is suggested when designing using consideration should be given effect exchange gas. Furthermore, occurrence material blockage excessive equipment height avoided.