The Effect of Adjusting Sinter Raw Mix on Dioxins from Iron Ore Co-Sintering with Municipal Solid Waste Incineration Fly Ash

The inhibition effect of calcined lime (CaO) and limestone (CaCO3) on the formation dioxins during iron ore co-sintering with fly ash was investigated in a sinter pot present work. Experimental results indicated that international total toxicity equivalent concentration decreased from 1.4335 to 0.2922, 0.1048, 0.4562, 0.3098 ng I-TEQ Nm−3 under four different experimental conditions. It can be concluded 5 wt.% 3 is optimal addition reduce flue gas, 92.70% efficiency. Effects dioxin distribution also analyzed. proportion low-chlorinated found increase, while high-chlorinated decreased, except for octachlorianted dibenzo-p-dioxins (OCDD). reason consumption HCl not only inhibits de novo synthesis, but dramatically promotes condensation dechlorination produce more tetrachlorianted through precursors. Finally, condensation, dichlorination, mechanisms municipal solid waste incineration (MSWI) are proposed.