Lime feeding system

The utility model discloses a lime feeding system, which relates to the technical field of desulfurization, and comprises a lime bin, a weighing bin, a screw conveyer and a blanking pipe, the lime bin is communicated with a feeding pipe, the weighing bin is communicated with an outlet of the feeding pipe, the screw conveyer is communicated with a blanking port of the weighing bin, and the screw conveyer is communicated with the blanking port of the weighing bin. The spiral conveyor comprises a rotating shaft and a spiral blade rotating around the rotating shaft, the spiral conveyor pushes materials to advance through rotation of the spiral blade, and the discharging pipe is connected with the spiral conveyor and the desulfurizing tower. According to the technical scheme, the spiral conveyor is adopted to replace a conventional Roots blower for feeding, continuous high-power air blowing of the blower is avoided, and the electric power is small, so that the energy consumption is reduced, and the operation cost