System of leaktight connection between a tuyere and a hot blast inlet nozzle for a shaft furnace, and steel-making blast furnace comprising such a system
US9169525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2012 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Nov 6, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D2099/0081
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The sealed connection system between a tuyere of a shaft furnace, such as a steelmaking blast furnace, and an air blast pipe, in which a tip of the blast pipe is pressed towards a rear end of the tuyere, being centered thereon while still retaining freedom of pivoting movement relative thereto, including an added annular blast pipe seat, placed between the tip of the blast pipe and tuyere and immobile relative to the tuyere, the blast pipe tip resting against a rear face of the seat and an immobile gasket being placed between the seat and the tuyere such that the seat rests in sealed manner against a rear face of the tuyere, and a sleeve arranged around the contact zone between the blast pipe tip and the seat, is connected in sealed manner to the seat and to the blast pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.