Method and furnace for electrical calcination enabling utilization of volatile matters
US7792177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2006 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Feb 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and a furnace for electrical calcination enables utilization of volatile matters of petroleum coke or anthracite during electrical calcination, i.e. conventional calcination or semi-graphitization. The furnace includes an anode, a cathode, and a furnace body. The furnace body includes an annular inner wall, an annular fume duct disposed circumferentially outside of the annular inner wall, an annular outer wall for heat preservation disposed circumferentially outside of the annular fume duct, and an air passage disposed in the annular outer wall. The air passage is in communication with the fume duct and outer atmosphere, respectively. An outlet opening for the volatile matters, in communication with a hearth of the furnace body, is disposed in the fume duct. The combustible volatile matters of the petroleum coke, anthracite, or other raw material are sufficiently utilized during electrical calcination, therefore the energy is saved and the environmental pollution is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.