Iron ore sintering process is the main source of SO

2

emissions in the iron and steel industry. At the situation of ultra-low emissions in iron and steel industry

it is urgent to cost-effectively reduce SO

2

emissions. A large amount of SO

2

formed during the combustion of solid fuel in iron ore sintering process

which are also effected by the fluxes in the sintered bed. Hence

the effects of sinter fluxes such as quicklime

limestone and dolomite on the combustion behavior of coke breeze and SO

2

emission were investi

gated by a micro-sintering experimental. The results show that the combustion rate of coke breeze improved and the SO

2

emissions significantly decreased by adding the sintering fluxes. Moreover

the desulfurization efficiency of quicklime was higher than that of limestone and dolomite

the maximum volume concentration of SO

2

and total of SO

2

emission decreased by about 68.38% and 70.89%

respectively. Furthermore

compared to the adding of quicklime

the combustion rate of coke breeze was obviously promoted by adding two carbonate fluxes. Hence

the proportion of quicklime increased while the proportions of limestone and dolomite reduced in the sintering mixture

which effectively reduced SO

2

emissions in the sintering process.