Invention Grant
- Patent Title: Extraction device for a tuyere part
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Application No.: US16639997Application Date: 2018-08-02
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Publication No.: US11021764B2Publication Date: 2021-06-01
- Inventor: Claude Thinnes
- Applicant: PAUL WURTH S.A.
- Applicant Address: LU Luxembourg
- Assignee: PAUL WURTH S.A.
- Current Assignee: PAUL WURTH S.A.
- Current Assignee Address: LU Luxembourg
- Agency: Cantor Colburn LLP
- Priority: LU100373 20170818
- International Application: PCT/EP2018/071041 WO 20180802
- International Announcement: WO2019/034447 WO 20190221
- Main IPC: C21B7/16
- IPC: C21B7/16 ; F27B1/16 ; F27D19/00

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, where 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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