Method for producing aluminum oxide through sintering sulfur-containing monohydrallite and lime

The invention relates to the technical field of aluminum oxide, and in particular relates to a method for producing aluminum oxide through sintering sulfur-containing monohydrallite and lime. According to the method, through properly adding a small amount of flue gas desulfurization slag and the lime into sulfur-containing monohydrallite for sintering, the aluminum oxide is produced, enabling aluminum element and sulphur element in a raw material to form a 4Cao.3Al2O3.SO3 phase, and by enabling silicon element to form a gamma-2CaO.SiO2 phase, and then adopting a low-temperature dissolution technology to perform aluminum oxide production, the deleterious effect of the sulphur element is reduced, the aluminum oxide dissolution performance of clinker is improved, and better market application value and social benefit are realized.