Auxiliary burner for electric furnace
US11041621B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 24, 2017 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Nov 25, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2204/20
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An auxiliary burner for an electric furnace capable of increasing and homogenizing the heating effect of iron scrap by suitably and efficiently burning solid fuel along with gas fuel. Auxiliary burner 100 for an electric furnace comprises a solid fuel injection tube 1, a gas fuel injection tube 2, and a combustion-supporting gas injection tube 3 in the stated order from the center side, all arranged coaxially, and is characterized in that: a combustion-supporting gas flow path 30 of the 10 combustion-supporting gas injection tube 3 is provided with a plurality of swirl vanes 4 for swirling the combustion-supporting gas, and the angle θ formed between the swirl vanes 4 and the burner axis is 5° or more and 45° or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.