Tap-hole refurbishing
US10281213B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2014 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Apr 12, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C5/4653
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for refurbishing a tap-hole including making a channel trough a tap-hole block, restoring the channel to form a refurbished tap-hole, detachably connecting a prefabricated refractory insert including a shell to a clay gun, where the insert includes a first and second ends in axial direction, where the second end is blocked, an opening arranged on the first end, a hollow passage in the axial direction, where the hollow passage is accessible through the opening, a plurality of lateral through holes, aligned in a longitudinal direction of the shell, with a constant interval covering 10-25% of the shell, the method further including inserting the insert into the channel, where the clay gun is fluidly coupled with the insert and the channel, injecting a grouting material from the clay gun into the insert and through the through hole into the channel and, disconnecting the insert from the clay gun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.