System for manufacturing light recycled aggregate by using sludge

The utility model discloses a system for manufacturing light recycled aggregate by utilizing sludge. Comprising a batching unit, a first temporary storage bin, a granulator, a second temporary storage unit and a sintering device which are communicated in sequence, wherein the first temporary storage bin is used for temporarily storing a pretreated mixed material; the granulator is used for granulating the mixed material; the second temporary storage unit is used for temporarily storing the granulated mixed material; the cooling machine is used for cooling the light recycled aggregate obtained by roasting; the screening machine is used for screening the light recycled aggregate; wherein the batching unit comprises a sludge bin, an auxiliary material bin and a stirring and grinding machine, the stirring and grinding machine is communicated with the sludge bin, and the stirring and grinding machine is communicated with the auxiliary material bin; and the stirring and grinding machine, the granulating machine, th