Extraction device for a tuyere part

Extraction device for extracting a tuyere part,in particular a tuyere or a tuyere cooler, from a shaft furnace, the device comprising a supporting frame with positioning elements configured to position the device against a furnace wall. The device also comprises a carriage supported by the supporting frame. The carriage is movable in a direction radial to the furnace wall. The device further comprises an extraction rod having a first end attached to the carriage and a second end for connecting to the tuyere part, wherein the first end of the extraction rod comprises a stopper. The device also comprises a percussion system acting on the stopper of the extraction rod in a direction away from the furnace wall.The device comprises a pretensioning mechanism on the supporting frame. The pretensioning mechanism is configured to apply a load to the carriage, in a direction away from the furnace wall.