EXTRACTION DEVICE FOR A TUYERE PART
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United States of America Patent
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Issued Date -
Dec 10, 2020
app pub date -
Aug 2, 2018
filing date -
Aug 18, 2017
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Abstract
Extraction device for extracting a tuyere part, in particular a tuyere or a tuyere cooler, from a shaft furnace, the device including a supporting frame with positioning elements configured to position the device against a furnace wall, a carriage supported by the supporting frame and movable in a direction radial to the furnace wall, 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 had a stopper, the device further including a percussion system acting on the stopper of the extraction rod in a direction away from the furnace wall, and a pretensioning mechanism on the supporting frame configured to apply a load to the carriage, in a direction away from the furnace wall.
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