Enhancing performance and durability of slag made from incinerator bottom ash and fly ash

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题名:	Enhancing performance and durability of slag made from incinerator bottom ash and fly ash
作者:	Chiou,IJ;Wang,KS;Tsai,CC
贡献者:	環境工程研究所
关键词:	GLASS-CERAMICS;CRYSTALLIZATION
日期:	2009
上传时间:	2010-06-29 18:20:41 (UTC+8)
出版者:	中央大學
摘要:	This work presents a method capable of melting the incinerator bottom ash and fly ash in a plasma furnace. The performance of slag and the strategies for recycling of bottom ash and fly ash are improved by adjusting chemical components of bottom ash and fly ash. Ashes are separated by a magnetic process to improve the performance of slag. Analytical results indicate that the air-cooled slag (ACS) and magnetic-separated slag (MSS) have hardness levels below 590 Wit, indicating fragility. Additionally, the hardness of crystallized slag (RTS) is between 655 and 686 MPa, indicating toughness. The leached concentrations of heavy metals for these three slags are all below the regulatory limits. ACS appears to have better chemical stability than MSS, and is not significantly different from RTS. In the potential alkali-silica reactivity of slag, MSS falls on the border between the harmless zone and the potentially harmful zone. ACS and RTS fall in the harmless zone. Hence, the magnetic separation procedure of ashes does not significantly improve the quality of slag. However, RTS appears to improve its quality. (c) 2008 Elsevier Ltd. All rights reserved.
關聯:	WASTE MANAGEMENT
显示于类别:	[環境工程研究所 ] 期刊論文

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