Blast furnace stove
US4311456A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1980 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Jul 18, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B9/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A vertically-fired blast furnace stove includes a mixing bed comprised of a multitude of spheres, cylinders or berl saddles supported by a carrier having openings therein located in the bottom portion of a vertically-extending combustion chamber. The bed extends within the walls of the combustion chamber above the floor to form a chamber coupled to pipes for delivering fuel and air to pass in the inner space openings in the bed where mixing and heating of the fuel and air supplies occurs for combustion above the bed. The hot products of combustion are directed by a dome into a heat-storage chamber having a filling of checkerbrick and then into a flue pipe. A control system operates valves for the air and gas supplies to heat the combustion walls above the ignition temperature after which the supplies of fuel and air are controlled in relation to a pressure difference between the pressure in the combustion chamber above the mixing bed and the supply pressure of at least one of the combustion components comprised of fuel and air. The fuel-to-air ratio is varied to increase the dome temperature to a predetermined maximum and thereafter the combustion products are tempered by increasin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.