System and method of processing electric arc furnace dust
US7227882B2 · kind B2 · utility
4Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Mar 4, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of processing electric arc furnace dust includes the steps of preheating a portion of electric arc furnace dust to a temperature of at least 170 degrees centigrade by convection heating to form a preheated dust. The preheated dust is further heated by microwaves until a zinc in the preheat dust vaporizes to form a metal vapor and a residue. The metal vapor is then condensed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.