Investigations on desulphurization performance of magnesium slag has great significance on reducing the desulphurization cost of power plant

releasing the air pollution and realizing wastes' utilization.By X-ray diffraction(XRD)analyzer

thermogravimetric analyzer(TGA)and scanning electron microscopy(SEM)

this paper observed the composition of the magnesium slag and experimentally studied its desulphurization performance under laboratory conditions.The results show that

the main component of the magnesium slag naturally cooled isγ-Ca2SiO4.Under laboratory conditions

the calcium conversion rate increased with the reaction temperature

and the change of the magnesium slag's surface morphology after the reaction verifies the desulpurization did occurred.Finally

taking a circulating fluidized bed(CFB)boiler as the object

the magnesium slag was used for desulpurization.The application results show that

when the mole ratio of calcium to sulfur was 2.45

the desulfurization efficiency of the magnesium reached 62.7%.