Device for removing worn nozzle bricks or nozzle linings from metallurgical vessels
US5133534A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 2, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Apr 2, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C2005/448
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A device for removing worn nozzle bricks or nozzle linings from the tap holes of metallurgical vessels including a spreading device, which can be introduced into the nozzle brick or tap hole, and a drive for extracting the nozzle brick or lining by means of the spreading device. The spreading device is arranged on a tool holder which can be displaced axially on a support, in particular a carriage. The tool holder can be connected to at least one drive. The tool holder advantageously includes an axial cavity in which a toothed shaft is rotatably mounted. The toothed shaft meshes with the toothing of at least two, and preferably three, spreading jaws which slide radially in the tool holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.