8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

The process of spraying steam on surface of sintering bed was studied by using Fluent in this paper. The model was simplified into 2D and only front part of sinter machine was studied. As simulation results show that : (1) average temperature of sintering bed raised 20.3℃ and temperature of off-gas raised 35.42℃ after spraying steam; (2) the CO in off-gas became lower and CO2 in off-gas getting higher when spraying steam and CO2/（CO+CO2） of off-gas raised 9.35% compared with spraying nothing; (3) hydrogen (0.14%) was found in off-gas when steam spray on sintering bed surface which means that water may have some reactions with carbon and (or) CO. Some industrial tests were taken after simulation. And the tests results show that sintering speed was accelerated and sinter qualities were improved and solid fuel consumption was reduced about 1.64kg/t by spraying 2t/h steam on sintering bed surface.