Heating and preheating device of nickel anode slime jacket screw feeder

The utility model discloses a heating and preheating device of a nickel anode slime jacket screw feeder, which is characterized in that a second jacket is arranged on the screw feeder, and a second inlet on the second jacket is connected with a first outlet by virtue of a pipeline, so that steam discharged from a first jacket on a sulfur melting kettle can be conveyed into the second jacket through the pipeline; in this way, materials in the screw feeder can be preheated. A transition mechanism and a lifting mechanism are arranged, the lifting mechanism is connected with a top cover and used for driving the top cover to ascend or descend, and a material passing groove in the transition mechanism is connected to the end, where a discharging opening is located, of a spiral feeder through a sliding assembly. In the process that the lifting mechanism drives the top cover to ascend, the connecting rod drives the material passing groove to slide in the direction close to the sulfur melting kettle through the slidin