Tuyere stock arrangement of a blast furnace
US8980165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2011 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Dec 16, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D3/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Tuyere stock arrangement of a blast furnace includes a tuyere body configured for installation in a shaft furnace wall. The tuyere body includes a front face facing an interior of the shaft furnace and an opposite rear face and a tuyere channel extending between the rear and front faces (24). The stock arrangement includes a blowpipe between the rear face and a hot blast air supply system, the blowpipe having a front portion connecting to the tuyere body and an opposite rear portion connecting to the hot blast air supply system. A fuel injection lance is arranged through the tuyere body and feeds fuel into the shaft furnace. A gas injection lance feeds an oxidizing gas to the shaft furnace and is arranged in the rear portion of the blowpipe to feed oxidizing gas into a central portion of a stream of hot blast air fed through the blowpipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.