Abstract
In this work, the melting process of MSWI (municipal solid waste incineration) fly ash was studied by high-temperature DSC-DTA experiments performed under the temperature range of 20-145^DDGC and some other parameter variables including atmosphere (O2 and N2), heating rates (5°C/min, lO°C/min, 20°C/min) and CaO addition. Two samples of MSWI fly ash used in the experiment were collected from a power station in southern China and the Rouen power station in France respectively. Three main transitions were observed during the melting process of fly ash: dehydration, polymorphic transition and fusion, which occur in the temperature range of 100-200°C, 480-670°C and 1101-1244°C, respectively. Finally, a zero-order kinetic model of fly ash melting reaction was established and the apparent activation energy of MSWI ash melting was obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 498-503 |
| Number of pages | 6 |
| Journal | Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) |
| Volume | 36 |
| Issue number | 5 |
| State | Published - Sep 2002 |
| Externally published | Yes |
Keywords
- DSC-DTA
- Fly ash
- Kinetics
- Melting
- Municipal solid waste
