Knowledge Management System of Institue of Mechanics, CAS
| THE FORMATION MECHANISM OF THE VITRIFIED SLAG IN A PLASMA ARC REACTOR FOR HAZARDOUS WASTE TREATMENT | |
Li YJ(李要建) ; Tian JG(田君国); Xu YX(徐永香); Sheng HZ(盛宏至)
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| Source Publication | Proceedings of the 26th annual International Conference on Incineration and Thermal Treatment Technologies |
| 2007 | |
| Pages | 860-868 |
| Conference Name | International Conference on Incineration and Thermal Treatment Technologies |
| Conference Date | 2007-05-14~2007-05-18 |
| Conference Place | Phoenix, Arizona, USA |
| Abstract | Various hazardous wastes with additives have been vitrified to investigate the formation mechanism of the glassy slag by a 30 kW DC plasma-arc reactor developed by the Institute of Mechanics, Chinese Academy of Sciences. The average temperature in the reaction area is controlled at 1500°C. The chemical compositions of three sorts of fly ashes are analyzed by XRF (X-Ray Fluorescence). Fly ashes with vitrifying additives can be vitrified to form glassy slag, which show that the ratio of the whole oxygen ions to the whole network former ions in glass (R) is appropriate in the range of 2~3 to form durable vitrified slag. In this experiment, the arc power is controlled below 5 kW to inhibit waste evaporation. To enhance the effects of heat transfer to wastes, ferrous powder has been added into the graphite crucible, which aggregates as ingot below the molten silicate after vitrification. The slag fails to form glass if the quenching rate is less than 1 K/min. Therefore, the slag will break into small chips due to the sharp quenching rate, which is more than 100 K/sec. |
| ISBN | 9781604233834 |
| URL | 查看原文 |
| Indexed By | 其他 |
| Language | 中文 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/27000 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Sheng HZ(盛宏至) |
| Recommended Citation GB/T 7714 | Li YJ,Tian JG,Xu YX,et al. THE FORMATION MECHANISM OF THE VITRIFIED SLAG IN A PLASMA ARC REACTOR FOR HAZARDOUS WASTE TREATMENT[C]Proceedings of the 26th annual International Conference on Incineration and Thermal Treatment Technologies,2007:860-868. |
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