Method for prefabricating high-temperature-resistant UHPC discharging chute of rotary hearth furnace

The invention discloses a method for prefabricating a high-temperature-resistant UHPC discharging chute of a rotary hearth furnace. The method comprises the following steps that 1, an upper discharging chute steel structure shell and a lower discharging chute steel structure shell are machined and manufactured; 2, large anchoring hooks are arranged and welded on the inner wall of the bottom face of the upper and lower discharging chute steel structure shell, and small anchoring hooks are welded on the other faces; 3, an inner mold is manufactured on the upper and lower discharging chute steel structure shell, so that a four-side pouring cavity and a three-side pouring cavity are formed in the upper and lower discharging chute steel structure shell correspondingly; 4, a high-temperature-resistant UHPC mixture is poured into the four-side pouring cavity and the three-side pouring cavity, and after natural curing is conducted for 15-25 days, the inner mold is dismantled; and 5, after butt joint, the high-tempera