Method for treating dry desulfurization ash

The invention provides a method for treating dry desulfurization ash. The method comprises the following steps: a) enabling oxidation hot air and to-be-treated dry desulfurization ash to jointly enteran oxidation device to contact to obtain high-temperature desulfurization ash after oxidation and hot air after oxidation, wherein the oxygen content of the oxidation hot air is 15 to 22 percent andthe temperature is 400 to 900 DEG C; and b) cooling the obtained high-temperature desulfurization ash after oxidation to obtain a treated product. Compared with the prior art, the treatment method provided by the invention has the following advantages: the oxidation hot air and the dry desulfurization ash are contacted directly and completely to perform oxidation, high heat transfer and mass transfer efficiency is achieved, the oxidation time is shortened, the temperature range is wider, the requirement on the oxygen content is higher, and the hot air after oxidation is conveyed to a hot air recycling device to be cont