Plasma treatment of fly ash from coal combustion to improve its marketability
US7985324B2 · kind B2 · utility
4Cited by
16References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 2007 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | May 25, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A system and method for treating unmarketable fly ash and improve its properties as an additive for concrete is disclosed. The method includes the steps of creating a gas stream containing ionized air through a plasma reactor and exposing an amount of fly ash containing carbon to the ionized air while in the reactor. The exposure of the carbon to the ionized air promotes the attachment of the ions to the carbon to reduce the adsorption capacity of the carbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.