Simulation model for sinter mixture's drying process was established and validated with the tunnel drier experiment. On this basis, hot blast temperature and flow rate, sinter bed's porosity factor and particle diameter are analyzed. The result shows that the effects of hot blast temperature and flow rate are far larger than the effects of sinter bed's porosity factor and particle diameter. Hot blast temperature obviously influences the drying process before 200¿, while little or no effect after 300¿. For the suitable sinter moisture content, hot blast flow rate of 1.5m/s or more is recommended during 200¿ to 250¿.