Apparatus and method for deactivating carbon in fly ash
US6136089A · kind A · utility
16Cited by
16References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 31, 1998 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Aug 31, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apparatus and method for improving the properties of carbon-containing fly ash through ozonation is described. The apparatus includes a chamber for containing the fly ash and an ozonator that generates an ozone-containing gas. The ozonator supplies the ozone-containing gas such that it enters the chamber with the fly ash and deactivates carbon within the fly ash. Afterwards, the fly ash will have decreased surfactant adsorptivity so that it can be effectively mixed with cement or whatever other materials may require fly ash with passivated carbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.