Orthogonal Experimental Research on Sintering Cooler Transfer Performance

Circular cooler is deployed for sinter cooling process in sintering industry. According to the sinter cooler from HBIS, an experimental study was conducted and a bench of the heat exchange body was built. Under the same initial temperature of the sinter, the experimental results of nine conditions are compared, which reveals the effect of particle size, material thickness, air flow rate and inlet air temperature on sinter sensible heat extraction, adopting orthogonal experimental method. Experiment results show that, at the mixing condition of material thickness 1400 mm, air flow rate 921 m3•h-1 and inlet air temperature 90 °C, the unit of sinter available exergy reaches 313.55 kJ•kg-1. The conclusions provide theoretical and experimental basis for the sensible heat extraction process of the sinter.

Numercial Simulation of Sinter Cooling Process

A 2-D sinter cooling model is built to simulate the hot iron ore sinter cooling process in a sinter cooler. In this model the convection heat transfer is applied for the heat transfer between the sinter particle skin and the cooling air flow. Thermal conduction is used for the heat conduction within the sinter particles, and fluid dynamics is applied tothe cooling gas distributions. This model will be able to analyze the effects of sinter particle size, size distribution, hot sinter initial temperature, initial temperature distribution, sinter cooler size, cooler configuration and cooling air flow rate as well as cooling air temperature on the sinter cooling process. In this paper the 2-D sinter cooling model is presented along with certain parametric study examples.