The invention relates to a garbage burning
fly ash sintering harm-eliminating resource-utilization treatment technology. According to the invention, garbage burning
fly ash is mixed with premixed
coal and auxiliary materials; the mixture is granulated and shaped; and the material is dried and is sintered in a
rotary kiln. During the
sintering process, when the temperature is increased and a
coal ignition point is reached, the premixed
coal is spontaneously combusted. Therefore, external coal
dose can be reduced. Initial
combustion of the premixed coal can provide a reductive
atmosphere, such that dechlorination and detoxification of dioxin in
fly ash can be benefited. Large amount of gas is produced by subsequent
combustion, such that dust pores and holes are produced on inner and outer parts of the sintered body, and heavy
metal volatilization can be promoted, and fly ash sintered body with low heavy
metal content and leaching amount can be obtained. The sintered body has no
potential harm to the environment, such that fly ash harm-eliminating and resource-utilization are sufficiently realized. During the
processing process,
smoke and secondary fly ash production amounts are low, and heavy
metal and acidic component contents are high. In deacidification and heavy metal stabilization processes, agent
utilization rate is improved. Compared with a traditional original fly ash curing / stabilizing process, a landfill amount can be reduced by 80-90%, such that pressure caused by serious landfill space shortage can be effectively relieved.